Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. 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 (With CONSULT-II): GO TO 2.
2. No (Without CONSULT-II): GO TO 5.
CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select "TCM INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out the value of "VHCL/S SE.A/T" while driving.
  Check the value changes according to driving speed.
  
  Fig 1: CONSULT-II (Data Monitor Display)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 3.
CHECK REVOLUTION SENSOR
Refer to "Component Inspection ".

OK or NG
1. OK: GO TO 4.
2. NG: Repair or replace revolution sensor.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Harness for short or open between TCM and revolution sensor.
- Harness for short or open between revolution sensor and ECM.
- Ground circuit for ECM.
  Refer to "ENGINE PERFORMANCE ".
OK or NG
1. OK: GO TO 6.
2. NG: Repair or replace damaged parts.
CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM harness connector M120 terminal 29 and ground while driving.
  (Measure with AC range.)
  
  Voltage:
  
  At 0 km/h (0 MPH):
  
  0V
  
  At 30 km/h (19 MPH):
  
  1V or more
  
  (Voltage rises gradually in response to vehicle speed.)
  
  Fig 2: Checking Voltage Between TCM Harness Connector M120 Terminal 29 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 3.
CHECK DTC
Perform DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE , .

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 7.
CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
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.