Check Park Position Switch

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK PARK POSITION SWITCH INPUT SIGNAL

Turn ignition switch OFF.
Check voltage between Intelligent Key unit harness connector and ground.

TERMINALS VOLTAGE REFERENCE

Connector	Terminal (Wire color)		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
M75	39 (BR)	Ground	Selector lever is in "P" position	0
M75	39 (BR)	Ground	Other than above	5

Fig 1: Identifying Voltage Between Intelligent Key Unit Harness Connector And Ground

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

OK or NG
OK: Park position switch circuit is OK.
NG: GO TO 2.

CHECK PARK POSITION SWITCH

Disconnect A/T device (park position switch) connector.
Check continuity between A/T device (park position switch) terminals 1 and 3.

TERMINALS CONTINUITY REFERENCE

Connector	Terminal		Condition	Continuity
M47	3	1	Selector lever is in "P" position	Yes
M47	3	1	Other than above	No

Fig 2: Identifying Continuity Between A/T Device (Park Position Switch) Terminals 1 And 3

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

OK or NG

OK: GO TO 3.
NG: Check A/T shift lock system. Refer to "A/T SHIFT LOCK SYSTEM ".

CHECK PARK POSITION SWITCH GROUND CIRCUIT
Check continuity between A/T device (park position switch) harness connector M47 terminal 1 and ground.

1 (B) - Ground : Continuity should exist.

Fig 3: Identifying Continuity Between A/T Device (Park Position Switch) Harness Connector M47 Terminal 1 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: GO TO 4.
- NG: Repair or replace harness.
CHECK PARK POSITION SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit harness connector M75 terminal 39 and A/T device (park position switch) harness connector M47 terminal 3.
  39 (BR) - 3 (PU/R) : Continuity should exist.
3. Check continuity between Intelligent Key unit harness connector M75 terminals 39 and ground.
39 (BR) - Ground : Continuity should not exist.

Fig 4: Identifying Continuity Between Intelligent Key Unit Harness Connector M75 Terminals 39 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
- OK: GO TO 5.
- NG: Repair or replace harness.

CHECK INTELLIGENT KEY OUTPUT SIGNAL

Connect Intelligent Key unit connector and A/T device (park position switch) connector.
Check voltage between Intelligent Key unit connector and ground.

TERMINALS VOLTAGE REFERENCE

Connector	Terminal (Wire color)		Condition	Voltage (V) (Approx.)
Connector	(+)	(-)	Condition	Voltage (V) (Approx.)
M75	39 (BR)	Ground	Selector lever is in "P" position	0
M75	39 (BR)	Ground	Other than above	5

Fig 5: Identifying Voltage Between Intelligent Key Unit Connector And Ground

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

OK or NG

OK: Check condition of harness and connector.
NG: Replace Intelligent Key unit.