Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION START
Do you have CONSULT-II?

Yes or No
1. Yes: GO TO 2.
2. No: GO TO 3.
CHECK PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to "ON" position. (Do not start engine.)
2. Select "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out P/N, R, D, 2nd position switches moving selector lever to each position.
  Check that the signal of the selector lever position is indicated properly.
NOTE: "2 POSITION SW" indicates L position status.

OK or NG
1. OK: GO TO 8.
2. NG: GO TO 4.
Fig 1: CONSULT-II Display - DATA MONITOR
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to ON position. (Do not start engine.)
2. Check voltage between TCM harness connector E143 terminals 27 (P/B), 34 (G), 35 (G/W), 36 (R/G) and ground while moving selector lever through each position.
  
  Fig 2: Lever Position Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  B: Battery voltage
  
  0: 0V
OK or NG
1. OK: GO TO 9.
2. NG: GO TO 4.
Fig 3: Identifying Lever Positions
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK PARK/NEUTRAL POSITION (PNP) SWITCH
Check the following item:
- Park/neutral position (PNP) switch
  Check continuity between PNP switch harness connector F29 terminals 1 and 2 and between terminals 3 and 5, 6, 7, 8 and 9 while moving manual shaft through each position.
  
  Fig 4: Selector Lever Position Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 7.
2. NG: GO TO 5.
Fig 5: Checking Park/Neutral Position (PNP) Switch Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK MANUAL CONTROL CABLE ADJUSTMENT
Check PNP switch again with manual control cable disconnected from manual shaft of A/T assembly. Refer to test group 2 (With CONSULT-II) or 7 (With out CONSULT-II).

OK or NG
1. OK: Adjust manual control cable. Refer to "CONTROL CABLE ADJUSTMENT ".
2. NG: GO TO 6.
CHECK PNP SWITCH ADJUSTMENT
Remove PNP switch from A/T assembly and check continuity of PNP switch terminals. Refer to test group 3.

OK or NG
1. OK: Adjust PNP switch. Refer to "PARK/NEUTRAL POSITION (PNP) SWITCH ADJUSTMENT ".
2. NG: Repair or replace PNP switch.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Fuse
- Harness for short or open between ignition switch and park/neutral position (PNP) switch
- Harness for short or open between park/neutral position (PNP) switch and TCM
- Harness for short or open between park/neutral position (PNP) switch and combination meter
- Harness for short or open between combination meter and TCM
- Ignition switch
  Refer to "POWER DISTRIBUTION ".
OK or NG
1. OK (With CONSULT-II): GO TO 8.
2. OK (Without CONSULT-II): GO TO 9.
3. NG: Repair or replace damaged parts.
CHECK OVERDRIVE CONTROL SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to "ON" position. (Do not start engine.)
2. Select "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out "OVERDRIVE SW".
  Check the signal of the overdrive control switch is indicated properly.
  
  (Overdrive switch "ON" displayed on CONSULT-II means overdrive "OFF".)
OK or NG
1. OK: GO TO 10.
2. NG: GO TO 9.
Fig 6: CONSULT-II Display - DATA MONITOR
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK OVERDRIVE CONTROL SWITCH
Check the following item:
- Overdrive control switch
  - Check continuity between A/T device (overdrive control switch) harness connector M34 terminals 1 and 2.
    
    Fig 7: Overdrive Control Switch Position - Continuity
    Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 10.
2. NG: Repair or replace damaged parts.
Fig 8: Checking Overdrive Control Switch Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Harness for short or open between combination meter and A/T device (overdrive control switch)
- Harness of ground circuit for A/T device (overdrive control switch) for short or open
- Combination meter
  Refer to "COMBINATION METERS ".
OK or NG
1. OK (With CONSULT-II): GO TO 11.
2. OK (Without CONSULT-II): GO TO 12.
3. NG: Repair or replace damaged parts.
CHECK CLOSED THROTTLE POSITION AND WIDE OPEN THROTTLE POSITION SIGNAL CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to "ON" position. (Do not start engine.)
2. Select "DATA MONITOR" mode for A/T with CONSULT-II.
3. Read out "CLOSED THL/SW" and "W/O THRL-SW" depressing and releasing accelerator pedal.
  Check the signal of throttle position signal is indicated properly.
  
  Fig 9: Checking Closed Throttle Position And Wide Open Throttle Position Signal Circuit (With Consult-II)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 10: Accelerator Pedal Condition And Data Monitor Condition Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 13.
2. NG: Check the following items. If any items are damaged, repair or replace damaged parts.
  - Accelerator pedal position (APP) sensor - Refer to "DTC P1705 THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR] ".
  - Harness for short or open between accelerator pedal position sensor and ECM
CHECK CLOSED THROTTLE POSITION AND WIDE OPEN THROTTLE POSITION SIGNAL CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II

Check the following items:
- Accelerator pedal position sensor - Refer to "DTC P1705 THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR] ".
- Harness for short or open between accelerator pedal position sensor and ECM
OK or NG
1. OK: GO TO 13.
2. NG: Repair or replace damaged parts.
CHECK SYMPTOM
Check again.

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 14.
CHECK TCM INSPECTION
1. perform TCM input/output signal inspection. Refer to "TCM TERMINALS AND REFERENCE VALUE ".
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
1. OK: INSPECTION END
2. NG: Repair or replace damaged parts.