Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM 1:

Selector lever cannot be moved from "P" position with key in ON position and brake pedal applied.
Selector lever can be moved from "P" position with key in ON position and brake pedal released.
Selector lever can be moved from "P" position when key is removed from key cylinder.

SYMPTOM 2:

Ignition key cannot be removed when selector lever is set to "P" position.
Ignition key can be removed when selector lever is set to any position except "P" position.

CHECK KEY INTERLOCK CABLE
Check the key interlock cable for damage.

OK or NG
1. OK: GO TO 2.
2. NG: Repair or replace key interlock cable. Refer to "KEY INTERLOCK CABLE ".
CHECK SELECTOR LEVER POSITION
Check the selector lever position for damage. Refer to "CHECKING OF A/T POSITION "

OK or NG
1. OK: GO TO 3.
2. NG: Adjust control linkage. Refer to "ADJUSTMENT OF A/T POSITION ".
CHECK SHIFT LOCK SOLENOID AND PARK POSITION SWITCH
1. Connect A/T device harness connector.
2. Turn ignition switch ON.
3. Selector lever is set in P position.
4. Check operation sound.
  
  Fig 1: Brake Pedal Operation Condition Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: INSPECTION END
2. NG: GO TO 4.
CHECK POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check the voltage between A/T device harness connector terminal 1 and ground. Refer to "WIRING DIAGRAM - AT - SHIFT ".
  
  Fig 2: Checking Voltage Between A/T Device Harness Connector Terminal 1 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Brake Pedal Specification Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 7.
2. NG: GO TO 5.

CHECK STOP LAMP SWITCH

Turn ignition switch OFF.
Disconnect stop lamp switch harness connector.

Check continuity between stop lamp switch harness connector terminals.

CONTINUITY SPECIFICATION

Condition	Continuity
When brake pedal is depressed	Yes
When brake pedal is released	No

Fig 4: Checking Continuity Between Stop Lamp Switch Harness Connector Terminals

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

Check stop lamp switch after adjusting brake pedal - refer to " BRAKE PEDAL ".

OK or NG

OK: GO TO 6.
NG: Repair or replace damaged parts.

DETECT MALFUNCTIONING ITEM
Check the following items. If any items are damaged, repair or replace damaged parts.
- Harness for short or open between ignition switch and stop lamp switch harness terminal 3.
- Harness for short or open between stop lamp switch harness terminal 4 and A/T device harness terminal 1.
- 10A fuse [No. 12, located in the fuse block (J/B)].
- Ignition switch, Refer to "POWER SUPPLY ROUTING CIRCUIT ".
OK or NG
1. OK: INSPECTION END
2. NG: Repair or replace damaged parts.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device harness connector terminal 2 and ground.
  1. Continuity should exist.
OK or NG
1. OK: Replace shift lock solenoid and park position switch assembly.
2. NG: Repair open circuit in harness or connectors.
Fig 5: Continuity Specification
Courtesy of NISSAN MOTOR CO., U.S.A.