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Nissan Ariya: Dtc/circuit Diagnosis

Nissan Ariya (FE0) 2023-2025 Service & Repair Manual / Body Interior / Automatic Drive Positioner / Dtc/circuit Diagnosis

B2900-01 Sliding / Lifting Switch

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
B2900-01 Sliding / lifting switch Diagnosis condition The power consumption control of driver seat control unit is in wake-up state
Signal (terminal) Sliding / lifting switch signal (terminal #31)
Threshold 0.352 – 3.962 V (switch remains ON)
Diagnosis delay time 10 seconds or more

POSSIBLE CAUSE

  • Sliding / lifting switch

  • Driver seat control unit

FAIL-SAFE

Stop the operation of the sliding motor and lifting motor

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait for 10 seconds or more.

  2. Check “Self Diagnostic Result” of “DRIVER SEAT” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1 >>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2 >>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK SLIDING / LIFTING SWITCH SIGNAL VOLTAGE

Check voltage between driver seat control unit harness connector and ground.

+ - Condition Voltage
Driver seat control unit
Connector Terminal
B313 31 Ground Sliding switch Operate (forward) 3.065 – 3.962 V
Operate (backward) 2.638 – 3.064 V
Lifting switch Operate (upward) 0.789 – 1.755 V
Operate (downward) 0.352 – 0.788 V
Sliding / lifting switch release 3.963 – 4.799 V*

*: When the power consumption control of driver seat control unit is in wake-up state.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 2.

CHECK SLIDING / LIFTING SWITCH

Check sliding / lifting switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace driver seat control unit. Refer to Removal and Installation.

NO>>

Replace power seat switch LH. Refer to Removal and Installation.

Component Inspection

CHECK SLIDING / LIFTING SWITCH

  1. Power switch OFF.

  2. Disconnect power seat switch LH connector.

  3. Check resistance between power seat switch LH terminals.

    Power seat switch LH Condition Resistance: kΩ
    Terminal
    1 4 Sliding switch Operate (forward) 4.485 – 4.575
    Operate (backward) 2.673 – 2.727
    Lifting switch Operate (upward) 0.418 – 0.426
    Operate (downward) 0.258 – 0.264
    Sliding / lifting switch release 29.700 – 30.300

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace power seat switch LH. Refer to Removal and Installation.

B2920-09 Driver Seat Control Unit

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
B2920-09 Driver seat control unit Diagnosis condition The power consumption control of driver seat control unit is in wake-up state
Signal (terminal) —
Threshold Detects internal relay fixing
Diagnosis delay time 1 second or more

POSSIBLE CAUSE

Driver seat control unit

FAIL-SAFE

Stop all motors

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Check “Self Diagnostic Result” of “DRIVER SEAT” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1 >>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2 >>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

REPLACE DRIVER SEAT CONTROL UNIT

Replace driver seat control unit. Refer to Removal and Installation.

>>

INSPECTION END

B2925-07 Driver Lumbar Support Control Module

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
B2925-07 Seat pneumatic control unit Diagnosis condition Operate the lumbar support pump
Signal (terminal) —
Threshold Driver lumbar support control module detects pressure malfunction
Diagnosis delay time 1 second or more

POSSIBLE CAUSE

  • Tube bending, cracking, and incomplete connection (between driver lumbar support control module and air bags)

  • Cracking of the air bags

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Operate the lumbar support switch forward / upward / downward to activate the lumbar support pump.

  3. Check “Self Diagnostic Result” of “DRIVER SEAT” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1 >>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2 >>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

INSPECTION OF THE LUMBAR SUPPORT

Inspect the following items.

  • Tube bending, cracking, and incomplete connection

  • Cracking of the air bags

Is the inspection result normal?

YES>>

Replace lumbar support unit. Refer to Disassembly & Assembly.

NO>>

Repair or replace the malfunctioning parts.

B2982-11 Tilt & Telescopic Switch Status

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
B2982-11 Tilt & telescopic switch status Diagnosis condition The power consumption control of steering column control module is in wake-up state
Signal (terminal) Tilt & telescopic switch signal (terminal #4)
Threshold 0.2 V or less
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

  • Harness or connectors (Tilt & telescopic switch signal circuit is shorted to ground)

  • Tilt & telescopic switch

  • Steering column control module

FAIL-SAFE

Stop all motors

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait for 2 seconds or more.

  2. Check “Self Diagnostic Result” of “STEERING COLUMN” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK TILT & TELESCOPIC SWITCH SIGNAL CIRCUIT

  1. Power switch OFF.

  2. Disconnect steering column control module connector and tilt & telescopic switch connector.

  3. Check continuity between steering column control module harness connector and ground.

    Steering column control module — Continuity
    Connector Terminal
    M71 4 Ground Not existed

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair the harness or connector.

CHECK TILT & TELESCOPIC SWITCH

Check tilt & telescopic switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

Replace tilt & telescopic switch. Refer to Removal and Installation.

Component Inspection

CHECK TILT & TELESCOPIC SWITCH

  1. Power switch OFF.

  2. Disconnect tilt & telescopic switch connector.

  3. Check resistance between tilt & telescopic switch terminals.

    Tilt & telescopic switch Condition Resistance: Ω
    Terminal
    1 4 Tilt switch Operate (upward) 355.3 – 362.5
    Operate (downward) 90.0 – 91.8
    Telescopic switch Operate (forward) 653.3 – 666.5
    Operate (backward) 198.9 – 202.9
    Tilt & telescopic switch Release 11096.8 – 11321.0

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace tilt & telescopic switch. Refer to Removal and Installation.

B298a-77 Tilt Motor

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
B298A-77 Tilt motor Diagnosis condition The power consumption control of steering column control module is in wake-up state
Signal (terminal) Tilt sensor signal (terminal #7)
Threshold No change in the sensor pulse for 0.3 seconds before reaching the target position during automatic operation
Diagnosis delay time 1 second or less

POSSIBLE CAUSE

  • Harness or connectors (Tilt motor circuit is open or shorted to ground)

  • Tilt motor

  • Steering column control module

  • Steering tilt mechanism deformation or pinched foreign materials

FAIL-SAFE

Stop all motors

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Check “Self Diagnostic Result” of “STEERING COLUMN” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK FOR ENTRY OF FOREIGN MATERIALS IN STEERING COLUMN

Check for entry of foreign materials and damage in steering column. Refer to STEERING COLUMN : Inspection.

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

Repair for entry of foreign materials and damage in steering column.

CHECK TILT MOTOR POWER SUPPLY

Check voltage between tilt & telescopic motor harness connector and ground.

+ - Condition

Voltage

(Approx.)
Tilt & telescopic motor
Connector Terminals
M401 7 Ground Steering tilt Operate (upward) 13.5 V
Other than the above 0 - 1 V
3 Operate (downward) 13.5 V
Other than the above 0 - 1 V

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 3.

CHECK TILT MOTOR POWER SUPPLY CIRCUIT

  1. Power switch OFF.

  2. Disconnect steering column control module connector and tilt & telescopic motor connector.

  3. Check continuity between steering column control module harness connector and tilt & telescopic motor harness connector.

    Steering column control module Tilt & telescopic motor Continuity
    Connector Terminal Connector Terminal
    M70 15 M401 7 Existed
    16 3

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR POWER SUPPLY SIGNAL

Check voltage between tilt & telescopic motor harness connector and ground.

+ -

Voltage

(Approx.)
Tilt & telescopic motor
Connector Terminals
M401 2 Ground 13.5 V

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 5.

CHECK TILT SENSOR POWER SUPPLY CIRCUIT

  1. Power switch OFF.

  2. Disconnect steering column control module connector and tilt & telescopic motor connector.

  3. Check continuity between steering column control module harness connector and tilt & telescopic motor harness connector.

    Steering column control module Tilt & telescopic motor Continuity
    Connector Terminal Connector Terminal
    M71 8 M401 2 Existed

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR GROUND CIRCUIT

  1. Power switch OFF.

  2. Disconnect steering column control module connector and tilt & telescopic motor connector.

  3. Check continuity between steering column control module harness connector and tilt & telescopic motor harness connector.

    Steering column control module Tilt & telescopic motor Continuity
    Connector Terminal Connector Terminal
    M71 9 M401 8 Existed

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR SIGNAL

  1. Connect steering column control module connector and tilt & telescopic motor connector.

  2. Check signal between steering column control module harness connector and ground with oscilloscope.

    + - Condition

    Signal

    (Reference value)
    Steering column control module
    Connector Terminals
    M71 7 Ground Steering tilt Operate

    Other than the above

    0 or 5 V

    (Depends on the stop position of the motor)

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

GO TO 8.

CHECK TILT SENSOR SIGNAL CIRCUIT

  1. Disconnect steering column control module connector and tilt & telescopic motor connector.

  2. Check continuity between steering column control module harness connector and tilt & telescopic motor harness connector.

    Steering column control module Tilt & telescopic motor Continuity
    Connector Terminal Connector Terminal
    M71 7 M401 1 Existed

Is the inspection result normal?

YES>>

Replace steering column assembly. Refer to STEERING COLUMN : Removal & Installation.

NO>>

Repair the harness or connector.

U1ce0-87 Driver Lumbar Support Control Module

DTC Description

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
U1CE0-87 Seat pneumatic control unit Diagnosis condition The power consumption control of driver seat control unit is in wake-up state
Signal (terminal) LIN communication signal (terminal #40)
Threshold Driver seat control unit is not transmitting or receiving LIN communication with driver lumbar support control module
Diagnosis delay time 1 second or more

POSSIBLE CAUSE

  • Harness or connectors (driver lumbar support control module circuit is open or short to ground)

  • Driver lumbar support control module

  • Driver seat control unit

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON.

  2. Check “Self Diagnostic Result” of “DRIVER SEAT” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1 >>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2 >>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK DRIVER LUMBAR SUPPORT CONTROL MODULE LIN COMMUNICATION SIGNAL

  1. Power switch OFF.

  2. Disconnect driver lumbar support control module connector.

  3. Power switch ON.

  4. Check output waveform between driver lumbar support control module harness connector and ground with oscilloscope.

    + - Output waveform
    Driver lumbar support control module
    Connector Terminal
    B724 84 Ground

Is the inspection result normal?

YES>>

Replace lumbar support unit. Refer to Disassembly & Assembly.

NO>>

GO TO 2.

CHECK DRIVER LUMBAR SUPPORT CONTROL MODULE LIN COMMUNICATION SIGNAL CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect driver seat control unit connector.

  3. Check continuity between driver lumbar support control module harness connector and driver seat control unit harness connector.

    Driver lumbar support control module Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    B724 84 B313 40 Existed

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK DRIVER LUMBAR SUPPORT CONTROL MODULE LIN COMMUNICATION SIGNAL CIRCUIT (SHORT TO GROUND)

Check continuity between driver lumbar support control module harness connector and ground.

Driver lumbar support control module — Continuity
Connector Terminal
B724 84 Ground Not existed

Is the inspection result normal?

YES>>

Replace driver seat control unit. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

U1cf0-86 Vehicle Speed Signal

DTC Description

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Ariya vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Ariya vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
U1CF0-86 Nissan Ariya Vehicle speed signal Diagnosis condition The power consumption control of steering column control module is in wake-up state
Signal (terminal) Nissan Ariya Vehicle speed signal
Threshold Abnormal signal received
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

ABS actuator and electric unit (control unit)

FAIL-SAFE

Only manual function can be operated

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait for 2 seconds or more.

  2. Check “Self Diagnostic Result” of “STEERING COLUMN” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

With CONSULT

  1. Power switch ON.

  2. Select “Self Diagnostic Result” of “ABS” using CONSULT.

  3. Check DTC, and repair or replace malfunctioning parts. Refer to DTC Index.

>>

INSPECTION END

U2118-87 Can Comm Circuit

DTC Description

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-Nissan Ariya vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern Nissan Ariya vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC DETECTION LOGIC

DTC No. CONSULT screen items DTC detection condition
U2118-87 CAN communication error (Intelligent Key) Diagnosis condition When power switch is ON
Signal (terminal) CAN communication signal
Threshold When driver seat control unit cannot communicate CAN communication signal
Diagnosis delay time 2 seconds or more

POSSIBLE CAUSE

CAN communication system

FAIL-SAFE

Only manual function can be operated

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

  1. Power switch ON and wait for 2 seconds or more.

  2. Check “Self Diagnostic Result” of “DRIVER SEAT” using CONSULT.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1 >>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2 >>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK CAN COMMUNICATION SYSTEM

Perform trouble diagnosis for CAN communication system. Refer to Trouble Diagnosis Flow Chart.

>>

INSPECTION END

Power Supply and Ground Circuit (driver Seat Control Unit)

Diagnosis Procedure

CHECK FUSE

  1. Power switch OFF.

  2. Check that the following fuse is not blown (open).

    Signal name Fuse No.
    Battery power supply 58 (20A)

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 2.

CHECK BATTERY POWER SUPPLY VOLTAGE

  1. Disconnect driver seat control unit connector.

  2. Check voltage between driver seat control unit harness connector and ground.

    + - Voltage
    Driver seat control unit
    Connector Terminal
    B465 48 Ground Battery voltage

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the driver seat control unit battery power supply circuit.

CHECK GROUND CIRCUIT (OPEN)

Check continuity between driver seat control unit harness connector and ground.

Driver seat control unit — Continuity
Connector Terminal
B465 51 Ground Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair the harness or connector.

Sliding Switch

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Sliding switch (Forward)” and “Sliding switch (Backward)” in “Data monitor” mode of “DRIVER SEAT” (driver side) or “PASSENGER SEAT” (passenger side) using CONSULT.

  3. Check sliding switch signal under the following conditions.

Monitor item Condition Status
Sliding switch (Forward) Sliding switch Operate (forward) On
Release Off
Sliding switch (Backward) Sliding switch Operate (backward) On
Release Off

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SLIDING SWITCH POWER SUPPLY VOLTAGE

  1. Power switch OFF.

  2. Disconnect power seat switch connector.

  3. Power switch ON.

  4. Check voltage between power seat switch harness connector and ground.

    DRIVER SIDE
    + -

    Voltage

    (Approx.)
    Power seat switch LH
    Connector Terminal
    B478 1 Ground 5 V
    PASSENGER SIDE
    + -

    Voltage

    (Approx.)
    Power seat switch RH
    Connector Terminal
    B503 1 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 2.

CHECK SLIDING SWITCH SIGNAL CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect seat control unit connector.

  3. Check continuity between power seat switch harness connector and seat control unit harness connector.

    DRIVER SIDE
    Power seat switch LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    B478 1 B313 31 Existed
    PASSENGER SIDE
    Power seat switch RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    B503 1 B501 31 Existed

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK SLIDING SWITCH SIGNAL CIRCUIT (SHORT TO GROUND)

Check continuity between power seat switch harness connector and ground.

DRIVER SIDE
Power seat switch LH — Continuity
Connector Terminal
B478 1 Ground Not existed
PASSENGER SIDE
Power seat switch RH — Continuity
Connector Terminal
B503 1 Ground Not existed

Is the inspection result normal?

YES>>

Replace seat control unit. Refer to Removal and Installation (driver side) or Removal and Installation (passenger side).

NO>>

Repair the harness or connector.

CHECK SLIDING SWITCH

Check sliding switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace power seat switch. Refer to Removal and Installation.

Component Inspection

CHECK SLIDING SWITCH

  1. Power switch OFF.

  2. Disconnect power seat switch connector.

  3. Check resistance between power seat switch terminals.

    Power seat switch Condition Resistance: kΩ
    Terminal
    1 4 Sliding switch Operate (forward) 4.485 – 4.575
    Operate (backward) 2.673 – 2.727
    Release 29.700 – 30.300

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace power seat switch. Refer to Removal and Installation.

Tilt Switch

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Tilt switch (Up)” and “Tilt switch (Down)” in “Data monitor” mode of “STEERING COLUMN” using CONSULT.

  3. Check tilt switch signal under the following conditions.

Monitor item Condition Status
Tilt switch (Up) Tilt switch Operate (upward) On
Release Off
Tilt switch (Down) Tilt switch Operate (downward) On
Release Off

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK TILT SWITCH POWER SUPPLY VOLTAGE

  1. Power switch OFF.

  2. Disconnect tilt & telescopic switch connector.

  3. Power switch ON.

  4. Check voltage between tilt & telescopic switch harness connector and ground.

    + -

    Voltage

    (Approx.)
    Tilt & telescopic switch
    Connector Terminal
    M136 1 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 2.

CHECK TILT SWITCH SIGNAL CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect steering column control module connector.

  3. Check continuity between tilt & telescopic switch harness connector and steering column control module harness connector.

    Tilt & telescopic switch Steering column control module Continuity
    Connector Terminal Connector Terminal
    M136 1 M71 4 Existed

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK TILT SWITCH SIGNAL CIRCUIT(SHORT TO GROUND)

Check continuity between tilt & telescopic switch harness connector and ground.

Tilt & telescopic switch — Continuity
Connector Terminal
M136 1 Ground Not existed

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

CHECK TILT SWITCH

Check tilt switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace tilt & telescopic switch. Refer to Removal and Installation.

Component Inspection

CHECK TILT SWITCH

  1. Power switch OFF.

  2. Disconnect tilt & telescopic switch connector.

  3. Check resistance between tilt & telescopic switch terminals.

    Tilt & telescopic switch Condition Resistance: Ω
    Terminal
    1 4 Tilt switch Operate (upward) 355.3 – 362.5
    Operate (downward) 90.0 – 91.8
    Release 11096.8 – 11321.0

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace tilt & telescopic switch. Refer to Removal and Installation.

Seat Memory Switch

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Memory switch 1”, “Memory switch 2” and “Set switch” in “Data monitor” mode of “DRIVER SEAT” (driver side) or “PASSENGER SEAT” (passenger side) using CONSULT.

  3. Check seat memory switch signal under the following conditions.

Monitor item Condition Status
Memory switch 1 Memory switch-1 Press On
Release Off
Memory switch 2 Memory switch-2 Press On
Release Off
Set switch Set switch Press On
Release Off

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SEAT MEMORY SWITCH POWER SUPPLY VOLTAGE

  1. Power switch OFF.

  2. Disconnect seat memory switch connector.

  3. Power switch ON.

  4. Check voltage between seat memory switch harness connector and ground.

    DRIVER SIDE
    + -

    Voltage

    (Approx.)
    Seat memory switch LH
    Connector Terminal
    D62 1 Ground 12 V
    2
    3
    PASSENGER SIDE
    + -

    Voltage

    (Approx.)
    Seat memory switch RH
    Connector Terminal
    D22 1 Ground 12 V
    2
    3

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 2.

CHECK SEAT MEMORY SWITCH SIGNAL CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect seat control unit connector.

  3. Check continuity between seat memory switch harness connector and seat control unit harness connector.

    DRIVER SIDE
    Seat memory switch LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    D62 1 B313 9 Existed
    2 10
    3 12
    PASSENGER SIDE
    Seat memory switch RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    D22 1 B501 9 Existed
    2 10
    3 12

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK SEAT MEMORY SWITCH SIGNAL CIRCUIT (SHORT TO GROUND)

Check continuity between seat memory switch harness connector and ground.

DRIVER SIDE
Seat memory switch LH — Continuity
Connector Terminal
D62 1 Ground Not existed
2
3
PASSENGER SIDE
Seat memory switch RH — Continuity
Connector Terminal
D22 1 Ground Not existed
2
3

Is the inspection result normal?

YES>>

Replace seat control unit. Refer to Removal and Installation (driver side) or Removal and Installation (passenger side).

NO>>

Repair the harness or connector.

CHECK SEAT MEMORY SWITCH GROUND CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Check continuity between seat memory switch harness connector and ground.

    DRIVER SIDE
    Seat memory switch LH ー Continuity
    Connector Terminal
    D62 4 Ground Existed
    PASSENGER SIDE
    Seat memory switch RH ー Continuity
    Connector Terminal
    D22 4 Ground Existed

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair the harness or connector.

CHECK SEAT MEMORY SWITCH

Check seat memory switch. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace seat memory switch. Refer to Removal and Installation.

Component Inspection

CHECK SEAT MEMORY SWITCH

  1. Power switch OFF.

  2. Disconnect seat memory switch connector.

  3. Check continuity between seat memory switch terminals.

    Seat memory switch Condition Continuity
    Terminal
    4 1 Memory switch-1 Press Existed
    Release Not existed
    2 Memory switch-2 Press Existed
    Release Not existed
    3 Set switch Press Existed
    Release Not existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Replace seat memory switch. Refer to Removal and Installation.

Power Seat Switch Ground Circuit

Diagnosis Procedure

CHECK POWER SEAT SWITCH GROUND CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect power seat switch connector and seat control unit connector.

  3. Check continuity between power seat switch harness connector and seat control unit harness connector.

    DRIVER SIDE
    Power seat switch LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    B478 4 B313 32 Existed
    PASSENGER SIDE
    Power seat switch RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    B503 4 B501 32 Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair the harness or connector.

Tilt & Telescopic Switch Ground Circuit

Diagnosis Procedure

CHECK TILT & TELESCOPIC SWITCH GROUND CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect tilt & telescopic switch connector and steering column control module connector.

  3. Check continuity between tilt & telescopic switch harness connector and steering column control module harness connector.

    Tilt & telescopic switch Steering column control module Continuity
    Connector Terminal Connector Terminal
    M136 4 M71 10 Existed

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair the harness or connector.

Sliding Sensor

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Sliding motor position” in “Data monitor” mode of “DRIVER SEAT” (driver side) or “PASSENGER SEAT” (passenger side) using CONSULT.

  3. Check sliding sensor signal under the following conditions.

Monitor item Condition Status
Sliding motor position Seat sliding Operate (forward) Change (increase)
Operate (backward) Change (decrease)
Other than the above No change

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SLIDING SENSOR SIGNAL

Check signal between seat control unit harness connector and ground with oscilloscope.

DRIVER SIDE
+ - Condition

Signal

(Reference value)
Driver seat control unit
Connector Terminal
B313 35 Ground Seat sliding Operate

Other than the above 0 or 5 V (Depends on the stop position of the motor)
PASSENGER SIDE
+ - Condition

Signal

(Reference value)
Passenger seat control unit
Connector Terminal
B501 35 Ground Seat sliding Operate

Other than the above 0 or 5 V (Depends on the stop position of the motor)

Is the inspection result normal?

YES>>

Replace seat control unit. Refer to Removal and Installation (driver side) or Removal and Installation (passenger side).

NO>>

GO TO 2.

CHECK SLIDING SENSOR SIGNAL CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect seat control unit connector and sliding motor connector.

  3. Check continuity between seat control unit harness connector and sliding motor harness connector.

    DRIVER SIDE
    Driver seat control unit Sliding motor LH Continuity
    Connector Terminal Connector Terminal
    B313 35 B317 3 Existed
    PASSENGER SIDE
    Passenger seat control unit Sliding motor RH Continuity
    Connector Terminal Connector Terminal
    B501 35 B504 3 Existed

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK SLIDING SENSOR SIGNAL CIRCUIT (SHORT TO GROUND)

Check continuity between seat control unit harness connector and ground.

DRIVER SIDE
Driver seat control unit — Continuity
Connector Terminal
B313 35 Ground Not existed
PASSENGER SIDE
Passenger seat control unit — Continuity
Connector Terminal
B501 35 Ground Not existed

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair the harness or connector.

CHECK SLIDING SENSOR POWER SUPPLY VOLTAGE

  1. Connect seat control unit connector.

  2. Check voltage between sliding motor harness connector and ground.

    DRIVER SIDE
    + -

    Voltage

    (Approx.)
    Sliding motor LH
    Connector Terminal
    B317 4 Ground 13.5 V
    PASSENGER SIDE
    + -

    Voltage

    (Approx.)
    Sliding motor RH
    Connector Terminal
    B504 4 Ground 13.5 V

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 5.

CHECK SLIDING SENSOR POWER SUPPLY CIRCUIT (OPEN)

  1. Disconnect seat control unit connector.

  2. Check continuity between sliding motor harness connector and seat control unit harness connector.

    DRIVER SIDE
    Sliding motor LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    B317 4 B313 34 Existed
    PASSENGER SIDE
    Sliding motor RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    B504 4 B501 34 Existed

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair the harness or connector.

CHECK SLIDING SENSOR POWER SUPPLY CIRCUIT (SHORT TO GROUND)

Check continuity between sliding motor harness connector and ground.

DRIVER SIDE
Sliding motor LH — Continuity
Connector Terminal
B317 4 Ground Not existed
PASSENGER SIDE
Sliding motor RH — Continuity
Connector Terminal
B504 4 Ground Not existed

Is the inspection result normal?

YES>>

Replace seat control unit. Refer to Removal and Installation (driver side) or Removal and Installation (passenger side).

NO>>

Repair the harness or connector.

CHECK SLIDING SENSOR GROUND CIRCUIT (OPEN)

  1. Disconnect seat control unit connector.

  2. Check continuity between sliding motor harness connector and seat control unit harness connector.

    DRIVER SIDE
    Sliding motor LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    B317 2 B313 33 Existed
    PASSENGER SIDE
    Sliding motor RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    B504 2 B501 33 Existed

Is the inspection result normal?

YES>>

Replace seat cushion frame. Refer to Disassembly & Assembly.

NO>>

Repair the harness or connector.

Tilt Sensor

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Tilt motor position” in “Data monitor” mode of “STEERING COLUMN” using CONSULT.

  3. Check tilt sensor signal under the following conditions.

Monitor item Condition Status
Tilt motor position Steering tilt Operate (upward) Change (increase)
Operate (downward) Change (decrease)
Other than the above No change

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK TILT SENSOR SIGNAL

Check signal between steering column control module harness connector and ground with oscilloscope.

+ - Condition

Signal

(Reference value)
Steering column control module
Connector Terminal
M71 7 Ground Steering tilt Operate

Other than the above

0 or 5 V

(Depends on the stop position of the motor)

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

GO TO 2.

CHECK TILT SENSOR SIGNAL CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect steering column control module connector and tilt & telescopic motor connector.

  3. Check continuity between steering column control module harness connector and tilt & telescopic motor harness connector.

    Steering column control module Tilt & telescopic motor Continuity
    Connector Terminal Connector Terminal
    M71 7 M401 1 Existed

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR SIGNAL CIRCUIT (SHORT TO GROUND)

Check continuity between steering column control module harness connector and ground.

Steering column control module — Continuity
Connector Terminal
M71 7 Ground Not existed

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR POWER SUPPLY VOLTAGE

  1. Connect steering column control module connector.

  2. Check voltage between tilt & telescopic motor harness connector and ground.

    + -

    Voltage

    (Approx.)
    Tilt & telescopic motor
    Connector Terminal
    M401 2 Ground 13.5 V

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 5.

CHECK TILT SENSOR POWER SUPPLY CIRCUIT (OPEN)

  1. Disconnect steering column control module connector.

  2. Check continuity between tilt & telescopic motor harness connector and steering column control module harness connector.

    Tilt & telescopic motor Steering column control module Continuity
    Connector Terminal Connector Terminal
    M401 2 M71 8 Existed

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR POWER SUPPLY CIRCUIT (SHORT TO GROUND)

Check continuity between tilt & telescopic motor harness connector and ground.

Tilt & telescopic motor — Continuity
Connector Terminal
M401 2 Ground Not existed

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

CHECK TILT SENSOR GROUND CIRCUIT (OPEN)

  1. Disconnect steering column control module connector.

  2. Check continuity between tilt & telescopic motor harness connector and steering column control module harness connector.

    Tilt & telescopic motor Steering column control module Continuity
    Connector Terminal Connector Terminal
    M401 8 M71 9 Existed

Is the inspection result normal?

YES>>

Replace steering column assembly. Refer to STEERING COLUMN : Removal & Installation.

NO>>

Repair the harness or connector.

Sliding Motor

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Sliding motor” in “Active test” mode of “DRIVER SEAT” (driver side) or “PASSENGER SEAT” (passenger side) using CONSULT.

  3. Check sliding motor operation.

Test item Operation
Sliding motor Forward Seat sliding Forward
Backward Backward
OFF Stop

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK SLIDING MOTOR POWER SUPPLY VOLTAGE

With CONSULT

  1. Power switch OFF.

  2. Disconnect sliding motor connector.

  3. Power switch ON.

  4. Select “Sliding motor” in “Active test” mode of “DRIVER SEAT” (driver side) or “PASSENGER SEAT” (passenger side) using CONSULT.

  5. Check voltage between sliding motor harness connector and ground.

    DRIVER SIDE
    + - Condition

    Voltage

    (Approx.)
    Sliding motor LH
    Connector Terminal
    B317 5 Ground Sliding motor Forward 13.5 V
    Backward 0 – 1 V
    OFF 0 – 1 V
    1 Forward 0 – 1 V
    Backward 13.5 V
    OFF 0 – 1 V
    PASSENGER SIDE
    + - Condition

    Voltage

    (Approx.)
    Sliding motor RH
    Connector Terminal
    B504 5 Ground Sliding motor Forward 13.5 V
    Backward 0 – 1 V
    OFF 0 – 1 V
    1 Forward 0 – 1 V
    Backward 13.5 V
    OFF 0 – 1 V

Is the inspection result normal?

YES>>

Replace seat cushion frame. Refer to Disassembly & Assembly.

NO>>

GO TO 2.

CHECK SLIDING MOTOR POWER SUPPLY CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect seat control unit connector.

  3. Check continuity between sliding motor harness connector and seat control unit harness connector.

    DRIVER SIDE
    Sliding motor LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    B317 5 B465 43 Existed
    1 44
    PASSENGER SIDE
    Sliding motor RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    B504 5 B502 43 Existed
    1 44

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK SLIDING MOTOR POWER SUPPLY CIRCUIT (SHORT TO GROUND)

Check continuity between sliding motor harness connector and ground.

DRIVER SIDE
Sliding motor LH — Continuity
Connector Terminal
B317 5 Ground Not existed
1
PASSENGER SIDE
Sliding motor RH — Continuity
Connector Terminal
B504 5 Ground Not existed
1

Is the inspection result normal?

YES>>

Replace seat control unit. Refer to Removal and Installation (driver side) or Removal and Installation (passenger side).

NO>>

Repair the harness or connector.

Tilt Motor

Component Function Check

CHECK FUNCTION

With CONSULT

  1. Power switch ON.

  2. Select “Tilt motor” in “Active test” mode of “STEERING COLUMN” using CONSULT.

  3. Check tilt motor operation.

Test item Operation
Tilt motor Up Steering tilt Upward
Down Downward
OFF Stop

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK TILT MOTOR POWER SUPPLY VOLTAGE

With CONSULT

  1. Power switch OFF.

  2. Disconnect tilt & telescopic motor connector.

  3. Power switch ON.

  4. Select “Tilt motor” in “Active test” mode of “STEERING COLUMN” using CONSULT.

  5. Check voltage between tilt & telescopic motor harness connector and ground.

    + - Condition

    Voltage

    (Approx.)
    Tilt & telescopic motor
    Connector Terminal
    M401 7 Ground Tilt motor Up 13.5 V
    Down 0 – 1 V
    OFF 0 – 1 V
    3 Up 0 – 1 V
    Down 13.5 V
    OFF 0 – 1 V

Is the inspection result normal?

YES>>

Replace steering column assembly. Refer to STEERING COLUMN : Removal & Installation.

NO>>

GO TO 2.

CHECK TILT MOTOR POWER SUPPLY CIRCUIT (OPEN)

  1. Power switch OFF.

  2. Disconnect steering column control module connector.

  3. Check continuity between tilt & telescopic motor harness connector and steering column control module harness connector.

    Tilt & telescopic motor Steering column control module Continuity
    Connector Terminal Connector Terminal
    M401 7 M70 15 Existed
    3 16

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair the harness or connector.

CHECK TILT MOTOR POWER SUPPLY CIRCUIT(SHORT TO GROUND)

Check continuity between tilt & telescopic motor harness connector and ground.

Tilt & telescopic motor — Continuity
Connector Terminal
M401 7 Ground Not existed
3

Is the inspection result normal?

YES>>

Replace steering column control module. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

Memory Indicator

Component Function Check

CHECK FUNCTION

  1. Push set switch.

  2. Check memory indicator operation.

    When seat position is already retained in memory : Illuminated for 5 seconds
    When seat position is not retained in memory : Illuminated for 0.5 second

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Refer to Diagnosis Procedure.

Diagnosis Procedure

CHECK MEMORY INDICATOR OPERATION

Check memory indicator operation.

Which is the malfunctioning indicator?

All indicators are NG>>

GO TO 2.

An indicator is NG>>

GO TO 4.

CHECK FUSE

Check that the following fuse is not blown (open).

Signal name Fuse No.
Memory indicator power supply 27 (10A)

Is the fuse blown (open)?

YES>>

Replace the blown (open) fuse after repairing the affected circuit if a fuse is blown (open).

NO>>

GO TO 3.

CHECK MEMORY INDICATOR POWER SUPPLY VOLTAGE

  1. Disconnect seat memory switch connector.

  2. Check voltage between seat memory switch harness connector and ground.

    DRIVER SIDE
    + - Voltage
    Seat memory switch LH
    Connector Terminal
    D62 5 Ground Battery voltage
    PASSENGER SIDE
    + - Voltage
    Seat memory switch RH
    Connector Terminal
    D22 5 Ground Battery voltage

Is the inspection result normal?

YES>>

Replace seat memory switch. Refer to Removal and Installation.

NO>>

Repair the memory indicator power supply circuit.

CHECK MEMORY INDICATOR SIGNAL VOLTAGE

  1. Power switch OFF.

  2. Disconnect seat control unit connector.

  3. Check voltage between seat control unit harness connector and ground.

DRIVER SIDE
+ - Voltage
Driver seat control unit
Connector Terminal
B313 38 Ground Battery voltage
18
PASSENGER SIDE
+ - Voltage
Passenger seat control unit
Connector Terminal
B501 38 Ground Battery voltage
18

Is the inspection result normal?

YES>>

Replace seat control unit. Refer to Removal and Installation (driver side) or Removal and Installation (passenger side).

NO>>

GO TO 5.

CHECK MEMORY INDICATOR SIGNAL CIRCUIT (OPEN)

  1. Disconnect seat memory switch connector.

  2. Check continuity between seat memory switch harness connector and seat control unit harness connector.

    DRIVER SIDE
    Seat memory switch LH Driver seat control unit Continuity
    Connector Terminal Connector Terminal
    D62 6 B313 38 Existed
    7 18
    PASSENGER SIDE
    Seat memory switch RH Passenger seat control unit Continuity
    Connector Terminal Connector Terminal
    D22 6 B501 38 Existed
    7 18

Is the inspection result normal?

YES>>

Replace seat memory switch. Refer to Removal and Installation.

NO>>

Repair the harness or connector.

 
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Nissan Ariya (FE0) 2023-2025 Service & Repair Manual

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