Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PARK/NEUTRAL POSITION SWITCH SIGNAL

Turn ignition switch on.

Check voltage between transfer control unit harness connector M152 terminal 33 and ground.

DIAGNOSTIC PROCEDURE - PARK/NEUTRAL POSITION SWITCH (M/T MODELS)

Connector	Terminal	Condition		Voltage (Approx.)
M152	33 - Ground	Ignition switch: ON	M/T shift lever neutral position	0V
M152	33 - Ground	Ignition switch: ON	Except the above	Battery voltage

OK or NG

OK: GO TO 5.
NG: GO TO 2.

Fig 1: Checking Voltage Between Transfer Control Unit Harness Connector M152 Terminal 33 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND PARK/NEUTRAL POSITION SWITCH
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the park/neutral position switch harness connector.
3. Check continuity between transfer control unit harness connector M152 terminal 33 and park/neutral position switch harness connector F66 terminal 1.
  Continuity should exist.
  
  Also check harness for short to ground and short to power.
OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace damaged parts.
  
  Fig 2: Checking Continuity Between Transfer Control Unit Harness Connector M152 Terminal 33 And Park/Neutral Position Switch Harness Connector F66 Terminal 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK GROUND CIRCUIT
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect park/neutral position switch harness connector.
3. Check continuity between park/neutral position switch harness connector F66 terminal 2 and ground.
  Continuity should exist.
  
  Also check harness for short to power.
OK or NG
1. OK: GO TO 4.
2. NG: Repair open circuit or short to power in harness or connectors.
  
  Fig 3: Checking Continuity Between Park/Neutral Position Switch Harness Connector F66 Terminal 2 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK PARK/NEUTRAL POSITION SWITCH

Turn ignition switch "OFF". (Stay for at least 5 seconds.)
Remove park/neutral position switch. Refer to "LOCATION OF ELECTRICAL PARTS ".

Push and release park/neutral position switch and check continuity between park/neutral position switch terminals 1 and 2.

PARK/NEUTRAL POSITION SWITCH TERMINALS 1 AND 2 CONTINUITY SPECIFICATIONS

Terminal	Condition	Continuity
1 - 2	Push park/neutral position switch	Yes
1 - 2	Release park/neutral position switch	No

OK or NG

OK: GO TO 5.
NG: Replace park/neutral position switch. Refer to "LOCATION OF ELECTRICAL PARTS ".

Fig 4: Checking Continuity Between Park/Neutral Position Switch Terminals 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "TRANSFER CONTROL UNIT INPUT/OUTPUT SIGNAL REFERENCE VALUES ".

OK or NG
1. OK: Inspection End.
2. 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.