Nissan Murano: Dtc/circuit Diagnosis / C1204 4wd Solenoid

DTC Description

DTC DETECTION LOGIC

Malfunction related to AWD solenoid has been detected.

POSSIBLE CAUSE

• Internal malfunction of electronic controlled coupling

• Malfunction of AWD solenoid power supply circuit (open or short)

• Malfunction of AWD solenoid command current

FAIL-SAFE

Front-wheel drive or shifts to 4-wheel drive (rear-wheels still have some driving torque).

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always place the ignition switch in the OFF position and wait at least 10 seconds before conducting the next test.

GO TO 2.

DTC REPRODUCTION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Select “Self Diagnostic Result” mode of “ALL MODE AWD/4WD”.

Is DTC “C1204” detected?

Proceed to DTC Diagnosis Procedure.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: Inspection End.

CHECK AWD SOLENOID POWER SUPPLY (1)

1. Ignition switch OFF.

2. Disconnect AWD control unit harness connector.

3. Check the voltage between AWD control unit harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   AWD control unit
   Connector	Terminal
   B135	9	Ground	Battery voltage

4. Ignition switch ON.

   CAUTION:

   Never start the engine.

5. Check the voltage between AWD control unit harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   AWD control unit
   Connector	Terminal
   B135	9	Ground	Battery voltage

Is the inspection result normal?

GO TO 3.

GO TO 2.

CHECK AWD SOLENOID POWER SUPPLY (2)

1. Ignition switch OFF.

2. Check the 10A fuse (#62)

3. Check the harness for open or short between AWD control unit harness connector B135 terminal No. 9 and 10A fuse (#62).

Is the inspection result normal?

Perform the trouble diagnosis for battery power supply circuit. Refer to Wiring Diagram.

Repair or replace error-detected parts.

CHECK AWD SOLENOID GROUND

Check the continuity between AWD control unit harness connector and ground.

Is the inspection result normal?

GO TO 4.

Repair or replace error-detected parts.

CHECK AWD SOLENOID CIRCUIT (1)

Check the resistance between AWD control unit harness connector.

Is the inspection result normal?

GO TO 7.

GO TO 5.

CHECK AWD SOLENOID CIRCUIT (2)

1. Disconnect AWD solenoid harness connector.

2. Check the continuity between AWD control unit harness connector and AWD solenoid harness connector.

   AWD control unit		AWD solenoid		Continuity
   Connector	Terminal	Connector	Terminal
   B135	1	C12	2	Yes
   	2		1

3. Check the continuity between AWD control unit harness connector and the ground.

   AWD control unit		—	Continuity
   Connector	Terminal
   B135	1	Ground	No
   	2

Is the inspection result normal?

GO TO 6.

Repair or replace error-detected parts.

CHECK AWD SOLENOID

Check AWD solenoid. Refer to Component Inspection.

Is the inspection result normal?

GO TO 7.

AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to Removal and Installation.

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?

Replace AWD control unit. Refer to Removal and Installation.

Repair or replace error-detected parts.

CHECK AWD SOLENOID

1. Ignition switch OFF.

2. Disconnect AWD solenoid harness connector.

3. Check the resistance between AWD solenoid harness connector terminals.

   AWD solenoid		Resistance (Approx.)
   Terminals
   1	2	2.5 Ω

Is the inspection result normal?

Inspection End.

AWD solenoid is malfunctioning. Replace electric controlled coupling. Refer to Removal and Installation.