Nissan Versa Note. Manual - part 174

DIAGNOSIS AND REPAIR WORK FLOW

DEF-19

< 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-20

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER SWITCH

DTC/CIRCUIT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Description

INFOID:0000000009541089

• 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:0000000009541090

1.

 CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION

1. Turn ignition switch ON.

2. Check that the indicator lamp of rear window defogger illuminates with rear window defogger switch ON.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refer to 

DEF-20, "Diagnosis Procedure"

.

2.

CHECK REAR DEFOGGER ON STATUS

1. Using CONSULT, select "BCM (REAR DEFOGGER)", then "DATA MONITOR" mode.

2. Select "REAR DEF SW" and monitor while pressing the rear DEF switch ON and OFF.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Refer to 

DEF-20, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009541091

Regarding Wiring Diagram information, refer to 

DEF-12, "Wiring Diagram"

.

1.

CHECK BCM OUTPUT SIGNAL

1. Turn ignition switch OFF.

2. Disconnect front air control connector.

3. Check voltage between front air control harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between BCM harness connector and front air control harness connector.

Monitored Item

Condition

Status

REAR DEF SW

Rear DEF switch ON (LED ON)

On

Rear DEF switch OFF (LED OFF)

Off

(+)

(–)

Voltage (V)

(Approx.)

Front air control

Connector

Terminal

M33

10

Ground

Battery voltage

REAR WINDOW DEFOGGER SWITCH

DEF-21

< DTC/CIRCUIT DIAGNOSIS >

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3. Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-70, "Removal and Installation"

 (with Intelligent Key) or 

BCS-127,

"Removal and Installation"

 (without Intelligent Key).

NO

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

Check continuity between front air control harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK REAR WINDOW DEFOGGER SWITCH

Refer to 

DEF-21, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-41, "Intermittent Incident"

.

NO

>> Replace front air control. Refer to 

HAC-56, "Removal and Installation"

.

Component Inspection

INFOID:0000000009541092

1.

CHECK REAR WINDOW DEFOGGER SWITCH

1. Turn ignition switch OFF.

2. Disconnect front air control connector.

3. Check continuity between front air control terminals.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace front air control. Refer to  

HAC-56, "Removal and Installation"

.

BCM

Front air control

Continuity 

Connector

Terminal

Connector

Terminal

M18 (without Intelligent Key system)

10

M33

10

Yes

M97 (with Intelligent Key system)

15

BCM

Ground

Continuity 

Connector

Terminal

M18 (without Intelligent Key system)

10

No

M97 (with Intelligent Key system)

15

Front air control

Ground

Continuity

Connector

Terminal

M33

8

Yes

Front air control

Condition

Continuity

Terminal

10

8

Rear window defogger switch

Pressed

Yes

Released

No

DEF-22

< DTC/CIRCUIT DIAGNOSIS >

REAR WINDOW DEFOGGER RELAY

REAR WINDOW DEFOGGER RELAY

Description

INFOID:0000000009541093

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

Component Function Check

INFOID:0000000009541094

1.

CHECK FUNCTION

1. Turn ignition switch ON.

2. Check that an operation noise of rear window defogger relay can be heard when turning the rear window

defogger switch ON.

Is the inspection result normal?

YES

>> Rear window defogger relay function is OK.

NO

>> Refer to 

DEF-22, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000009541095

Regarding Wiring Diagram information, refer to 

DEF-12, "Wiring Diagram"

.

1.

CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF and disconnect rear window defogger relay connector.

2. Turn ignition switch ON.

3. Check voltage between rear window defogger relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK FUSE

1. Turn ignition switch OFF.

2. Check 10A fuse (No. 5).
Is the inspection result normal?

YES

>> Check ignition power supply circuit. Refer to 

PG-17, "Wiring Diagram — Ignition Power Supply —

"

.

NO

>> Replace the blown fuse after repairing the affected circuit.

3.

CHECK REAR WINDOW DEFOGGER RELAY CONTROL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector.

3. Check continuity between BCM harness connector and rear window defogger relay harness connector.

4. Check continuity between BCM harness connector and ground.

(+)

(

−)

Voltage (V)

(Approx.)

Rear window defogger relay

Connector

Terminal

M14

2

Ground

Battery voltage

BCM

Rear window defogger relay

Continuity 

Connector

Terminal

Connector

Terminal

M19 (without Intelligent Key system)

44

M14

1

Yes

M97 (with Intelligent Key system)

1