Diagnostic Procedure

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WAIT DETECTION SWITCH SIGNAL

With CONSULT-II

Start engine.
Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.
Read out the value of "WAIT DETCT SW".

WAIT DETECTION SWITCH DISPLAY VALUE

Condition		Display value
Vehicle stopped Engine running A/T selector lever "N" position Brake pedal depressed	4WD shift switch: 2WD, AUTO or 4H	OFF
	4WD shift switch: 4H to 4LO (While actuator motor is operating.)	OFF -> ON
	4WD shift switch: 4LO to 4H (While actuator motor is operating.)	ON -> OFF
	4WD shift switch: 4LO	ON

Fig 1: Display CONSULT-II - Data Monitor Screen

Courtesy of NISSAN MOTOR CO., U.S.A.

Without CONSULT-II

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

TERMINALS VOLTAGE REFERENCE

Connector	Terminal	Condition		Voltage (Approx.)
M153	43 - Ground	Vehicle stopped Engine running A/T selector lever "N" position Brake pedal depressed	4WD shift switch: 2WD, AUTO or 4H	Battery voltage
			4WD shift switch: 4H to 4LO (While actuator motor is operating.)	Battery voltage -> 0V
			4WD shift switch: 4LO to 4H (While actuator motor is operating.)	0V -> Battery voltage
			4WD shift switch: 4LO	0V

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

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 5.

NG: GO TO 2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the wait detection switch harness connector.
3. Check continuity between transfer control unit harness connector M153 terminal 43 and wait detection switch harness connector F59 terminal 10.
  Continuity should exist.
  
  Also check harness for short to ground and short to power.
Fig 3: Checking Continuity Between Transfer Control Unit Connector Terminal And Wait Detection Switch Connector Terminal
Courtesy of NISSAN MOTOR CO., U.S.A.

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. Disconnect wait detection switch harness connector.
3. Check continuity between wait detection switch harness connector F59 terminal 11 and ground.
  Continuity should exist.
  
  Also check harness for short to power.
Fig 4: Checking Continuity Between Wait Detection Switch Harness Connector F59 Terminal 11 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 4.

NG: Repair open circuit or short to power in harness or connectors.

CHECK WAIT DETECTION SWITCH

Turn ignition switch "OFF". (Stay for at least 5 seconds.)
Disconnect wait detection switch harness connector.
Remove wait detection switch. Refer to , "LOCATION OF ELECTRICAL PARTS ".
Push and release wait detection switch and check continuity between wait detection switch terminals 10 and 11.

WAIT DETECTION SWITCH

Terminal	Condition	Continuity
10 - 11	Push wait detection switch	Yes
10 - 11	Release wait detection switch	No

Fig 5: Checking Continuity Between Wait Detection Switch Terminals 10 And 11

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 5.

NG: Replace wait detection switch. Refer to , "LOCATION OF ELECTRICAL PARTS ".

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 6.

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 unit. Refer to , "REMOVAL AND INSTALLATION ".