Nissan Leaf. Manual — part 1143

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

STC-17

< WIRING DIAGRAM >

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STC-18

< WIRING DIAGRAM >

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

AAGIA0145GB

ELECTRONICALLY CONTROLLED POWER STEERING SYSTEM

STC-19

< WIRING DIAGRAM >

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STC-20

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000010119193

DETAILED FLOW

1.

INTERVIEW FROM THE CUSTOMER

Clarify customer complaints before inspection. First of all, perform an interview utilizing

STC-21, "Diagnostic

Work Sheet"

and reproduce symptoms as well as fully understand it. Ask customer about his/her complaints

carefully. Check symptoms by driving vehicle with customer, if necessary.

CAUTION:

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

“maybe the customer mentions this symptom”.

>> GO TO 2.

2.

CHECK SYMPTOM

Reproduce the symptom that is indicated by the customer, based on the information from the customer

obtained by interview. Also check that the symptom is not caused by protection function. Refer to

STC-14,

"Protection Function"

.

CAUTION:

When the symptom is caused by normal operation, fully inspect each portion and obtain the under-

standing of customer that the symptom is not caused by a malfunction.

>> GO TO 3.

3.

PERFORM SELF-DIAGNOSIS

With CONSULT

Perform self-diagnosis.
Is any DTC detected?

YES

>> Record or print DTC and freeze frame data (FFD). GO TO 4.

NO

>> GO TO 6.

4.

RECHECK SYMPTOM

With CONSULT

1. Erase self-diagnostic results.

2. Perform DTC confirmation procedures for the malfunctioning system.

NOTE:

If some DTCs are detected at the same time, determine the order for performing the diagnosis based on

STC-

14, "DTC Inspection Priority Chart"

.

Is any DTC detected?

YES

>> GO TO 5.

NO

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

GI-53,

"Intermittent Incident"

.

5.

REPAIR OR REPLACE MALFUNCTIONING PARTS

• Repair or replace malfunctioning parts.

• Reconnect part or connector after repairing or replacing.

• When DTC is detected, erase “Self-Diagnostic Result” for “EPS”.

>> GO TO 7.

6.

IDENTIFY MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Estimate malfunctioning system based on symptom diagnosis and perform inspection.
Can the malfunctioning system be identified?