Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The diagnostic procedure includes inspections for the overdrive control switch circuits.

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 TCM INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.
3. Read out P/N, R, D, 2 and 1 position switches moving selector lever to each position. Check that the signal of the selector lever position is indicated properly.
  
  Fig 1: Checking PNP Switch Circuit (With CONSULT-II)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 5.
2. NG: GO TO 2.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Park/neutral position (PNP) switch
  - Check continuity between park/neutral position (PNP) switch F29 terminals 1 (G/OR) and 2 (B) and between terminals 3 (Y) and 4 (OR), 5 (L), 6 (W/G), 7 (BR/W), 8 G/W), 9 (G) while moving manual shaft through each position.
    
    Fig 2: Lever Position And Terminals Continuity Specifications
    Courtesy of NISSAN MOTOR CO., U.S.A.
    
    Fig 3: Checking Continuity Between Park/Neutral Position Switch Terminals
    Courtesy of NISSAN MOTOR CO., U.S.A.
  - If NG, check again with manual control cable disconnected from manual shaft of A/T assembly. Refer to step a.
  - If OK on step b, adjust manual control cable. Refer to CONTROL CABLE ADJUSTMENT .
  - If NG on step b, remove park/neutral position (PNP) switch from A/T and check continuity of park/neutral position (PNP) switch terminals. Refer to step a.
  - If OK on step d, adjust park/neutral position (PNP) switch. Refer to PARK/NEUTRAL POSITION (PNP) SWITCH ADJUSTMENT .
  - If NG on step d, replace park/neutral position (PNP) switch.
- Harness for short or open between ignition switch and park/neutral position (PNP) switch (Main harness)
- Harness for short or open between park/neutral position (PNP) switch and TCM (Main harness)
OK or NG
1. OK: GO TO 5.
2. NG: Repair or replace damaged parts.
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 terminals 26 (OR), 27 (L), 34 (W/G), 35 (G/W), 36 (BR/W) and ground while moving selector lever through each position.
  
  Fig 4: TCM Terminals Voltage Specifications
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 5: Checking PNP Switch Circuit (Without CONSULT-II)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. Voltage:
  2. B: Battery voltage
  3. 0: 0V
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 4.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Park/neutral position (PNP) switch
  - Check continuity between park/neutral position (PNP) switch F29 terminals 1 (G/OR) and 2 (B) and between terminals 3 (Y) and 4 (OR), 5 (L), 6 (W/G), 7 (BR/W), 8 G/W), 9 (G) while moving manual shaft through each position.
    
    Fig 6: Lever Position And Terminals Continuity Specifications
    Courtesy of NISSAN MOTOR CO., U.S.A.
    
    Fig 7: Checking Continuity Between Park/Neutral Position Switch Terminals
    Courtesy of NISSAN MOTOR CO., U.S.A.
  - If NG, check again with manual control cable disconnected from manual shaft of A/T assembly. Refer to step a.
  - If OK on step b, adjust manual control cable. Refer to CONTROL CABLE ADJUSTMENT .
  - If NG on step b, remove park/neutral position (PNP) switch from A/T and check continuity of park/neutral position (PNP) switch terminals. Refer to step a.
  - If OK on step d, adjust park/neutral position (PNP) switch. Refer to PARK/NEUTRAL POSITION (PNP) SWITCH ADJUSTMENT .
  - If NG on step d, replace park/neutral position (PNP) switch.
- Harness for short or open between ignition switch and park/neutral position (PNP) switch (Main harness)
- Harness for short or open between park/neutral position (PNP) switch and TCM (Main harness)
OK or NG
1. OK: GO TO 7.
2. 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 TCM INPUT SIGNALS in 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 control switch ON displayed on CONSULT-II means overdrive OFF.)
OK or NG
1. OK: GO TO 7.
2. NG: GO TO 6.
Fig 8: Checking Overdrive Control Switch Circuit (With CONSULT-II)
Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Overdrive control switch M44.
  - Check continuity between two terminals.
  Fig 9: Checking Overdrive Control Switch Malfunctioning
  Courtesy of NISSAN MOTOR CO., U.S.A.
- Harness for short or open between TCM and overdrive control switch (Main harness)
- Harness of ground circuit for overdrive control switch (Main harness) for short or open
OK or NG
1. OK: GO TO 7.
2. NG: Repair or replace damaged parts.
CHECK THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR]
- Perform throttle position sensor [accelerator pedal position (APP) sensor] inspection. Refer to DTC P1705 THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR] .
OK or NG
1. OK: GO TO 8.
2. NG: Repair or replace damaged parts.
CHECK TCM INSPECTION
1. Perform TCM input/output inspection. Refer to INPUT/OUTPUT SIGNAL CHART .
OK or NG
1. OK: INSPECTION END.
2. NG: Inspect TCM terminals and related wiring harnesses for damage or loose connections. Repair or replace damaged parts.