Nissan Sentra. Manual - part 216

DIAGNOSIS AND REPAIR WORK FLOW

DEF-29

< BASIC INSPECTION >

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8.

 DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:

The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 9.

NO

>> Check voltage of related BCM terminals using CONSULT.

9.

 REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-

ment.

3. Check DTC. If DTC is displayed, erase it.

>> GO TO 10.

10.

 FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check

again, and then check that the malfunction have been repaired securely.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that

the symptom is not detected.
Does the symptom reappear?

YES (DTC is detected)>>GO TO 8.

YES (Symptom remains)>>GO TO 6.

NO

>> Inspection End.

DEF-30

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

DTC/CIRCUIT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000009759097

• The rear window defogger is operated by pressing the rear window defogger switch ON.

• The indicator lamp in the rear window defogger switch illuminates while the rear window defogger is ON.

Component Function Check

INFOID:0000000009759098

1.

 CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

1. Check (“REAR DEF SW”) in BCM - REAR DEFOGGER “DATA MONITOR” mode by using CONSULT.

2. Operate rear window defogger switch and check the status on CONSULT screen.

Is the inspection result normal?

YES

>> Rear window defogger switch function is OK.

NO

>> Refer to 

DEF-30, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009759099

Regarding Wiring Diagram information, refer to 

DEF-20, "Wiring Diagram"

.

1.

 CHECK REAR WINDOW DEFOGGER ON SIGNAL CIRCUIT

1. Turn ignition switch to ON.

2. Turn rear window defogger switch ON.

3. Check voltage between BCM connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-73, "Removal and Installation"

 (with Intelligent Key system) or 

BCS-

126, "Removal and Installation"

 (without Intelligent Key system).

NO

>> GO TO 2.

2.

 CHECK HARNESS CONTINUITY

1. Turn ignition switch to OFF.

2. Disconnect BCM and A/C auto amp.

3. Check continuity between BCM connector and A/C auto amp.

Monitor Item

Condition

status

REAR DEF SW

Rear window defogger 
switch

Pressed

On

Released

Off

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

 Connector

Terminal 

M21 (without Intelligent Key)

10

Ground

Rear window defogger 

switch 

ON 0

M84 (with Intelligent Key)

15

OFF 

Battery voltage

REAR WINDOW DEFOGGER SWITCH

DEF-31

< DTC/CIRCUIT DIAGNOSIS >

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4. Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-105, "Removal and Installation"

 (with auto A/C) or 

HAC-

189, "Removal and Installation"

 (without auto A/C).

NO

>> Repair or replace harness.

BCM

A/C auto amp.

Continuity 

Connector

Terminal

Connector

Terminal

M21 (without Intelligent Key)

10

M29 (without A/C)

16

Yes

M33 (with manual A/C)

M84 (with Intelligent Key)

15

M33 (with manual A/C)

M34 (with auto A/C)

BCM

Ground

Continuity

Connector

Terminal

M21 (without Intelligent Key)

10

No

M84 (with Intelligent Key)

15

DEF-32

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000009759100

Power is supplied to the rear window defogger with BCM control.

Component Function Check

INFOID:0000000009759101

1.

 CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check that an operation noise of rear window defogger relay (located in IPDM E/R) can be heard when

turning the rear window defogger switch ON.

Is the inspection result normal?

YES

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

NO

>> Refer to 

DEF-32, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009759102

Regarding Wiring Diagram information, refer to 

DEF-20, "Wiring Diagram"

.

1.

CHECK FUSES 

Check if any of the following fuses in the IPDM E/R are blown.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Replace the fuse after repairing the affected circuit.

2.

 CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check voltage between IPDM E/R connector E48 terminal 62 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace IPDM E/R. Refer to 

PCS-30, "Removal and Installation"

 (with Intelligent Key system) or

PCS-58, "Removal and Installation"

 (without Intelligent Key system).

3.

 CHECK INTERMITTENT INCIDENT

Check intermittent incident.

Refer to 

GI-39, "Intermittent Incident"

Is the inspection result normal?

YES

>> Check the following:

• Battery power supply circuit.

• IPDM E/R.

NO

>> Repair or replace the malfunctioning parts.

COMPONENT PARTS

AMPERE

FUSE NO.

IPDM E/R

15A

31

32

Terminals

Condition of rear 

window defogger 

switch

Voltage (V)

(Approx.)

(+)

(–)

IPDM E/R con-

nector

Terminal 

E48

62

Ground

ON Battery 

voltage

OFF

0V