Nissan GT-R (R35) · Service Manual
TRANSMISSION & DRIVELINE
TRANSMISSION & DRIVELINE › DRIVELINE › COMPONENT DIAGNOSIS
C1204 AWD SOLENOID
TRANSFER
C1204
Description
DTC Logic
Diagnosis Procedure
Component Inspection
Description
Controls electric controlled coupling by command current from AWD control unit.
DTC Logic
DTC DETECTION LOGIC
DTC
Display items
Malfunction detected condition
Possible cause
C1204
4WD SOLENOID
Malfunction related to AWD solenoid has been detected.
Internal malfunction of electric controlled coupling
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
Turn the ignition switch OFF to ON.
Perform AWD control unit self-diagnosis.
Is DTC “C1204” detected?
YES
>>
Proceed to diagnosis procedure. Refer to
Diagnosis Procedure (GT-R certified NISSAN dealer)
.
NO
>>
INSPECTION END
Diagnosis Procedure
1.CHECK AWD SOLENOID POWER SUPPLY
Turn the ignition switch OFF.
Disconnect AWD control unit harness connector.
Check the voltage between AWD control unit harness connector and ground.
AWD control unit
—
Voltage
Connector
Terminal
B213
9
Ground
Battery voltage
Is the inspection result normal?
YES
>>
GO TO 2
.
NO
>>
Perform the trouble diagnosis for power supply circuit. Refer to
Diagnosis Procedure (GT-R certified NISSAN dealer)
.
2.CHECK AWD SOLENOID GROUND
Check the continuity between AWD control unit harness connector and ground.
AWD control unit
—
Continuity
Connector
Terminal
B213
10
Ground
Existed
11
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
Repair or replace error-detected parts.
3.CHECK AWD SOLENOID CIRCUIT
Disconnect AWD solenoid harness connector.
Check the continuity between AWD control unit harness connector and AWD solenoid harness connector.
AWD control unit
AWD solenoid
Continuity
Connector
Terminal
Connector
Terminal
B213
1
B123
1
Existed
2
2
Check the continuity between AWD control unit harness connector and the ground.
AWD control unit
—
Continuity
Connector
Terminal
B213
1
Ground
Not existed
2
Check the continuity between AWD solenoid harness connector and the ground.
AWD solenoid
—
Continuity
Connector
Terminal
B123
1
Ground
Not existed
2
Is the inspection result normal?
YES
>>
GO TO 4
.
NO
>>
Repair or replace error-detected parts.
4.CHECK AWD SOLENOID
Check the resistance between AWD solenoid harness connector terminals. Refer to
Component Inspection (GT-R certified NISSAN dealer)
.
Is the inspection result normal?
YES
>>
GO TO 5
.
NO
>>
AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to
Exploded View (GT-R certified NISSAN dealer)
.
5.CHECK TERMINALS AND HARNESS CONNECTORS
Check AWD control unit pin terminals for damage or loose connection with harness connector.
Check AWD solenoid pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
>>
Replace AWD control unit. Refer to
Exploded View (GT-R certified NISSAN dealer)
.
NO
>>
Repair or replace error-detected parts.
Component Inspection
1.CHECK AWD SOLENOID
Turn the ignition switch OFF.
Disconnect AWD solenoid harness connector.
Check the resistance between AWD solenoid harness connector terminals.
AWD solenoid
Resistance (Approx.)
Connector
Terminal
B123
1
2
1.75Ω
Is the inspection result normal?
YES
>>
INSPECTION END
NO
>>
AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to
Exploded View (GT-R certified NISSAN dealer)
.
DTC DETECTION LOGIC
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III