Nissan Ariya: Automatic Brake Hold

• System Description
• Ecu Diagnosis Information. Chassis Control Module
• Basic Inspection. Diagnosis and Repair Work Flow
• Component Parts /circuit Diagnosis
• Symptom Diagnosis. Does Not Operate
• Removal and Installation

Ecu Diagnosis Information. Chassis Control Module

List of ECU Reference

ECU	Reference
Chassis control module	DTC Index
	Physical Values
	Values On The Diagnosis Tool
	Fail-safe
	DTC Inspection Priority Chart

Basic Inspection. Diagnosis and Repair Work Flow

Work Flow

DETAILED FLOW

INTERVIEW FROM THE CUSTOMER

Clarify customer complaints before inspection. First of all, perform an interview utilizing diagnostic work sheet and reproduce the symptom as well as fully understand it. Ask customer about his/her complaints carefully. Check symptoms by driving Nissan Ariya vehicle with customer, if necessary. Refer to Diagnostic Work Sheet.

CAUTION:

Customers are not professional. Never guess easily like “maybe the customer means that...,” or “maybe the customer mentions this symptom”.

>>

GO TO 2.

CHECK SYMPTOM

Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by the interview. Also check that the symptom is not caused by fail-safe mode. Refer to Fail-safe.

CAUTION:

When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.

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GO TO 3.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform self-diagnosis for “CHASSIS CONTROL”.

Is DTC detected?

YES>>

Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.

NO>>

INSPECTION END

PERFORM DTC DIAGNOSIS PROCEDURE

With CONSULT

Perform confirmation procedure for the error-detected system.

NOTE:

If some DTCs are detected at the same time, determine the order for performing the diagnosis based on DTC Inspection Priority Chart.

Is DTC detected?

YES>>

GO TO 5.

NO>>

Check harness and connectors based on the information obtained by the interview.

REPAIR OR REPLACE ERROR-DETECTED PARTS

1. Repair or replace error-detected parts.

2. Reconnect part or connector after repairing or replacing.

3. When DTC is detected, erase self-diagnosis results for “CHASSIS CONTROL”.

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GO TO 6.

FINAL CHECK

With CONSULT

1. Check the reference value for “CHASSIS CONTROL”.

2. Recheck the symptom and check that the symptom is not reproduced on the same conditions.

Is the symptom reproduced?

YES>>

GO TO 3.

NO>>

INSPECTION END

Diagnostic Work Sheet

Description

• In general, customers have their own criteria for a symptom. Therefore, it is important to understand the symptom and status well enough by interviewing the customer about the symptom carefully. To systemize all the information for the diagnosis, prepare the interview sheet referring to the interview points.

• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.

INTERVIEW SHEET SAMPLE

Interview sheet
Customer name	MR/MS	Registration number		Initial year registration
		Nissan Ariya Vehicle type		VIN
Storage date		Engine/ Traction motor		Mileage	km ( Mile)
Symptom		□ Does not operate ( ) function
		□ Warning lamp for ( ) turns ON.
		□ Noise                 □ Vibration
		□ Other ( )
First occurrence		□ Recently □ Other ( )
Frequency of occurrence		□ Always □  Under a certain conditions of □ Sometimes ( time(s)/day)
Climate conditions		□ Irrelevant
	Weather	□ Fine □ Cloud □ Rain □Snow □ Others ( )
	Temperature	□ Hot □Warm □ Cool □ Cold □ Temperature [Approx. °C ( °F)]
	Relative humidity	□ High □ Moderate □ Low
Road conditions		□ Urban area □ Suburb area □ Highway □ Mountainous road (uphill or downhill) □ Rough road
Operating condition, etc.		□Irrelevant □When traction motor starts □ During idling □ During driving □ During acceleration □ At constant speed driving □ During deceleration □ During cornering (right curve or left curve) □ When steering wheel is steered (to right or to left)
Other conditions
Nissan Ariya Vehicle equipment
Memo

Symptom Diagnosis. Does Not Operate

Diagnosis Procedure

Automatic brake hold function does not operate when the operating conditions are satisfied.

PERFORM SELF-DIAGNOSIS (CHASSIS CONTROL MODULE)

With CONSULT

Perform self-diagnosis for “CHASSIS CONTROL”.

Is DTC detected?

YES>>

Check the DTC. Refer to DTC Index.

NO>>

GO TO 2.

CHECK AUTOMATIC BRAKE HOLD SWITCH

Check the automatic brake hold switch. Refer to Component Function Check.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Replace the automatic brake hold switch. Refer to AUTOMATIC BRAKE HOLD SWITCH : Removal & Installation.

PERFORM SELF-DIAGNOSIS [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)]

With CONSULT

Perform self-diagnosis for “ABS”.

Is DTC detected?

YES>>

Check the DTC. Refer to DTC Index.

NO>>

Replace the chassis control module. Refer to CHASSIS CONTROL MODULE : Removal & Installation.