Nissan GT-R (R35) · Service Manual
ENGINE
ENGINE › ENGINE CONTROL SYSTEM › COMPONENT DIAGNOSIS
ELECTRICAL LOAD SIGNAL
VR38
Description
Component Function Check
Diagnosis Procedure
Description
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred through the CAN communication line.
Component Function Check
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
Turn ignition switch ON.
Connect CONSULT-III and select “DATA MONITOR” mode.
Select “LOAD SIGNAL” and check indication under the following conditions.
Monitor item
Condition
Indication
LOAD SIGNAL
Rear window defogger switch
ON
ON
OFF
OFF
Is the inspection result normal?
YES
>>
GO TO 2
.
NO
>>
Go to
Diagnosis Procedure
.
2.CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Monitor item
Condition
Indication
LOAD SIGNAL
Lighting switch
ON at 2nd position
ON
OFF
OFF
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
Go to
Diagnosis Procedure
.
3.CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Monitor item
Condition
Indication
HEATER FAN SW
Heater fan control switch
ON
ON
OFF
OFF
Is the inspection result normal?
YES
>>
INSPECTION END
NO
>>
Go to
Diagnosis Procedure
.
Diagnosis Procedure
1.INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to
Component Function Check (GT-R certified NISSAN dealer)
.
Which circuit is related to the incident?
Rear window defogger
>>
GO TO 2
.
Headlamp
>>
GO TO 3
.
Heater fan
>>
GO TO 4
.
2.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to
Work Flow
>>
INSPECTION END
3.CHECK HEADLAMP SYSTEM
Refer to
Work Flow
.
>>
INSPECTION END
4.CHECK HEATER FAN CONTROL SYSTEM
Refer to
Work Flow
.
>>
INSPECTION END
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION