Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INPUT SIGNAL
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 "TURBINE REV" while driving. Check the value changes according to driving speed.
  
  Fig 1: Checking Input Signal With Consult II
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Start engine.
2. Check frequency between TCM terminal 38 and ground.
  Frequency :Approximately 240 Hz when driving 20 km/h (12 MPH)
OK or NG
1. OK: GO TO 3.
2. NG: GO TO 2.
Fig 2: Checking Frequency Between TCM Terminal 38 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING ITEM
Check harness for short or open between TCM and turbine revolution sensor.

OK or NG
1. OK: GO TO 3.
2. NG: Repair or replace damaged parts.
CHECK DTC
Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE ".

OK or NG
1. OK: INSPECTION END.
2. NG: GO TO 4.
CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminal for damage or loose connection with harness connector.
OK or NG
1. OK: INSPECTION END.
2. NG: Repair or replace damaged parts.