Diagnostic Procedure

• Check P code with CONSULT-II "ENGINE".

Turn ignition switch ON and select "SELF DIAGNOSTIC RESULTS" mode for "ENGINE" with CONSULT-II. Refer to USING MIL .

1. OK or NG 

OK: (with CONSULT-II) GO TO 2.

OK: (without CONSULT-II) GO TO  3.

NG: Check accelerator pedal position sensor circuit for engine control. Refer to DTC P2122, P2123, P2127, P2128, P2138 APP SENSOR .

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 the value of "THRTL POS SEN".
   Fig 1: Display Data Monitor Check Input Signal (With CONSULT-II)

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

1. OK or NG 

OK: GO TO  4.

NG: Check harness for short or open between ECM and TCM regarding accelerator pedal position sensor circuit.

Without CONSULT-II 

1. Turn ignition switch to ON position. (Do not start engine.)
2. Check voltage between TCM harness connector F50 terminals 41 (W) and 42 (B) while accelerator pedal is depressed slowly.
   Fig 2: Identifying Input Signal (Without CONSULT-II)

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

OK: GO TO 4.

NG: Check harness for short or open between ECM and TCM regarding accelerator pedal position sensor circuit.

Perform DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE .

1. OK or NG 

OK: Inspection End 

NG: GO TO 5.

1. Perform TCM input/output signal inspection.
2. If NG. recheck TCM pin terminals for damage or loose connection with harness connector.

1. OK or NG 

OK: Inspection End 

NG: Repair or replace damaged parts.