Nissan X-Trail 32. Manual - part 410

DEF-24

< WIRING DIAGRAM >

REAR WINDOW DEFOGGER SYSTEM

JRLWD5760GB

DIAGNOSIS AND REPAIR WORK FLOW

DEF-25

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

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DETAILED FLOW

1.

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain the malfunction information (conditions and environment when the malfunc-
tion occurred) as much as possible when the customer brings the vehicle in.

>> GO TO 2.

2.

CHECK DTC

Perform self diagnosis with CONSULT.
Is any DTC detected?

YES

>> Refer to 

BCS-78, "DTC Index"

.

NO

>> GO TO 3.

3.

REPRODUCE THE MALFUNCTION INFORMATION

Check the malfunction on the vehicle that the customer describes.
Inspect the relation of the symptoms and the condition when the symptoms occur.

>> GO TO 4.

4.

IDENTIFY THE MALFUNCTIONING SYSTEM WITH “SYMPTOM DIAGNOSIS”

Use “Symptom diagnosis” from the symptom inspection result in step 3. Then identify where to start perform-
ing the diagnosis based on possible causes and symptoms.

>> GO TO 5.

5.

IDENTIFY MALFUNCTIONING PARTS WITH “COMPONENT DIAGNOSIS”

Perform the diagnosis with “Component diagnosis” of the applicable system.

>> GO TO 6.

6.

REPAIR OR REPLACE THE MALFUNCTIONING PARTS

Repair or replace the specified malfunctioning parts.

>> GO TO 7.

7.

FINAL CHECK

Check that malfunctions are not reproduced when obtaining the malfunction information from the customer,
referring to the symptom inspection result in step 3.
Are all malfunctions corrected?

YES

>> INSPECTION END

NO

>> GO TO 4.

DEF-26

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

DTC/CIRCUIT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Component Function Check

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1.

CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

Check that the indicator lamp of rear window defogger illuminates when rear window defogger switch ON. 

Is the inspection result normal?

YES

>> Rear window defogger switch function is OK.

NO

>> Refer to 

DEF-26, "Diagnosis Procedure"

Diagnosis Procedure

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1.

CHECK A/C TYPE

Check A/C type.

Automatic A/C>>GO TO 2.
Manual A/C>>GO TO 3.

2.

REPLACE A/C CONTROL

1.

Turn ignition switch OFF.

2.

Replace A/C control. Refer to 

HAC-125, "Removal and Installation"

.

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace A/C auto amp. Refer to 

HAC-126, "Removal and Installation"

3.

REPLACE A/C AMP.

1.

Turn ignition switch OFF.

2.

Replace A/C amp. Refer to 

HAC-222, "Removal and Installation"

.

3.

Turn ignition switch ON.

4.

Operate rear window defogger switch and check the operating condition.

>> INSPECTION END

REAR WINDOW DEFOGGER RELAY

DEF-27

< DTC/CIRCUIT DIAGNOSIS >

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REAR WINDOW DEFOGGER RELAY

Component Function Check

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1.

CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1.

Perform BCM Active Test (“REAR DEFOGGER”) with CONSULT.

2.

Touch “ON”.

3.

Check that the rear window heating wire is getting warmer.

Is the inspection result normal?

YES

>> Rear window defogger relay power supply circuit is OK.

NO

>> Refer to 

DEF-27, "Diagnosis Procedure"

Diagnosis Procedure

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1.

CHECK REAR WINDOW DEFOGGER CIRCUIT 1

1.

Turn ignition switch ON.

2.

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO-1

>> Fixed at 0 V and remains unchanged: GO TO 2.

NO-2

>> Fixed at 9 – 16 V and remains unchanged: Replace BCM. Refer to 

BCS-121, "Removal and

Installation"

.

2.

CHECK REAR WINDOW DEFOGGER CIRCUIT 2

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector and fuse block (J/B) connector.

3.

Check continuity between BCM harness connector and fuse block (J/B) harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK REAR WINDOW DEFOGGER RELAY

Check rear window defogger relay. Refer to 

DEF-28, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace rear window defogger relay.

4.

CHECK FUSE BLOCK (J/B)

1.

Install the rear window defogger relay.

2.

Connect fuse block (J/B) connector.

3.

Turn ignition switch ON.

4.

Check voltage between fuse block (J/B) harness connector and ground.

(+)

(-)

Condition

Voltage

BCM

 Connector

Terminal 

M87

64

Ground

 Rear window defogger switch

ON 

0 – 1.5 V

OFF

9 – 16 V

BCM 

Fuse block (J/B)

Continuity 

Connector

Terminal

Connector

Terminal

M87

64

M3

6C

Existed