Nissan Pathfinder. Manual - part 400

DLN-42

< BASIC INSPECTION >

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DIAGNOSIS AND REPAIR WORK FLOW

Other conditions

Memo

Interview sheet

Customer 
name

MR/MS

Registration 
number

Initial year 
registration 

Vehicle type

VIN

Storage date

Engine

Mileage

km (Mile)

ADDITIONAL SERVICE WHEN REPLACING 4WD CONTROL UNIT

DLN-43

< BASIC INSPECTION >

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ADDITIONAL SERVICE WHEN REPLACING 4WD CONTROL UNIT

Description

INFOID:0000000009177727

When replacing 4WD control unit, unit characteristics writing is required.

Work Procedure

INFOID:0000000009177728

1.

PERFORM WRITING UNIT CHARACTERISTICS

Perform writing unit characteristics of electric controlled coupling.

>> Refer to 

DLN-44, "Work Procedure"

.

DLN-44

< BASIC INSPECTION >

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UNIT CHARACTERISTICS WRITING

UNIT CHARACTERISTICS WRITING

Description

INFOID:0000000009177729

When replacing 4WD control unit, rear final drive assembly and/or electric controlled coupling, unit character-

istics of electric controlled coupling writing is required.

Work Procedure

INFOID:0000000009177730

1.

UNIT CHARACTERISTICS WRITING

 With CONSULT

1. Confirm the unit characteristics (A) of electric controlled cou-

pling.

NOTE:

Unit characteristics is 12-digit alphanumeric.

2. Turn the ignition switch OFF to ON.

3. Select “UNIT CHARACTERISTICS WRITE” in “WORK SUP-

PORT” for “ALL MODE AWD/4WD”.

4. Input unit characteristics.

5. Select “Start”.

6. Check that “UNIT CHARACTERISTICS WRITE COMPLETED”

is displayed.

>> WORK END

ALDIA0375ZZ

C1201 4WD CONTROL UNIT

DLN-45

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

C1201 4WD CONTROL UNIT

DTC Logic

INFOID:0000000009177731

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and

wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION

 With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “C1201” detected?

YES

>> Proceed to 

DLN-45, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009177732

1.

PERFORM SELF-DIAGNOSIS

 With CONSULT

1. Erase self-diagnostic results for “ALL MODE AWD/4WD”.

2. Turn the ignition switch OFF, and then wait 10 seconds or more.

3. Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is DTC “C1201” detected?

YES

>> Replace 4WD control unit. Refer to 

DLN-72, "Removal and Installation"

.

NO

>> Check 4WD control unit pin terminals for damage or loose connection with harness connector. If

any items are damaged, repair or replace error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

C1201

CONTROLLER FAILURE

Malfunction has occurred inside 4WD 
control unit.

Internal malfunction of 4WD control unit