Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ACTUATOR POSITION SWITCH SIGNAL

With CONSULT-II

Start engine.
Depress brake pedal and stop vehicle.
Set A/T selector lever to "N" position.
Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.

Read out the value of "SHIFT POS SW1", "SHIFT POS SW2", "SHIFT POS SW3", "SHIFT POS SW4".

DISPLAY VALUE CONDITION

Monitored item	Condition	Display value
SHIFT POS SW1	4WD shift switch: 2WD and 4LO	ON
SHIFT POS SW1	4WD shift switch: 4H	OFF
SHIFT POS SW2	4WD shift switch: 4LO	ON
SHIFT POS SW2	4WD shift switch: 2WD and 4H	OFF
SHIFT POS SW3	4WD shift switch: 2WD and 4H	ON
SHIFT POS SW3	4WD shift switch: 4LO	OFF
SHIFT POS SW4	4WD shift switch: 4H and 4LO	ON
SHIFT POS SW4	4WD shift switch: 2WD	OFF

Fig 1: Identifying CONSULT II - DATA MONITOR Screen

Without CONSULT-II

Start engine.
Depress brake pedal and stop vehicle.
Set A/T selector lever to "N" position.

Check voltage between transfer control unit harness connector terminal and ground.

CONNECTOR TERMINAL VOLTAGE REFERENCE

Connector	Terminal	Condition	Voltage (Approx.)
E142	10 - Ground	4WD shift switch: 2WD and 4LO	0V
	10 - Ground	4WD shift switch: 4H	Battery voltage
	11 - Ground	4WD shift switch: 4LO	0V
	11 - Ground	4WD shift switch: 2WD and 4H	Battery voltage
	12 - Ground	4WD shift switch: 2WD and 4H	0V
	12 - Ground	4WD shift switch: 4LO	Battery voltage
	13 - Ground	4WD shift switch: 4H and 4LO	0V
	13 - Ground	4WD shift switch: 2WD	Battery voltage

Fig 2: Checking Voltage Between Transfer Control Unit Connector Terminal And Ground

OK or NG

OK: GO TO 4.

NG: GO TO 2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device (actuator position switch) harness connector.
3. Check continuity between the following terminals.
  - Transfer control unit harness connector M152 terminal 10 and transfer control device (actuator position switch) harness connector F58 terminal 26.
  - Transfer control unit harness connector M152 terminal 11 and transfer control device (actuator position switch) harness connector F58 terminal 20.
  - Transfer control unit harness connector M152 terminal 12 and transfer control device (actuator position switch) harness connector F58 terminal 21.
  - Transfer control unit harness connector M152 terminal 13 and transfer control device (actuator position switch) harness connector F58 terminal 25.
    Continuity should exist.
    
    Fig 3: Checking Continuity Between Transfer Control Unit And Transfer Control Device Connector Terminals
    
    Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 3.

NG: Repair or replace damaged parts.
CHECK GROUND CIRCUIT
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Check continuity between transfer control device (actuator position switch) harness connector F58 terminal 22 and ground.
  Continuity should exist.
  
  Also check harness for short to power.
  
  Fig 4: Checking Continuity Between Transfer Control Device (Actuator Position Switch) Harness Connector F58 Terminal 22 And Ground
OK or NG

OK: GO TO 4.

NG: Repair open circuit or short to power in harness or connectors.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "TRANSFER CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

OK or NG

OK: GO TO 5.

NG: Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG

OK: Inspection End.

NG: Replace transfer control device. Refer to "REMOVAL AND INSTALLATION ".