Diagnostic Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK DTC WITH ECM
- Check P code with CONSULT-II ENGINE.
  Turn ignition switch ON and select SELF DIAGNOSTIC RESULTS mode for ENGINE with CONSULT-II.
Refer to MALFUNCTION INDICATOR LAMP (MIL) .

OK or NG
1. OK (with CONSULT-II): GO TO 2.
2. OK (without CONSULT-II): GO TO 3.
3. NG: Check throttle position sensor [accelerator pedal position (APP) sensor] circuit for engine control. Refer to DTC P0221 TP SENSOR and DTC P0226 APP SENSOR .
CHECK INPUT SIGNAL (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 the value of THRTL POS SEN.
  
  Fig 1: Checking Input Signal (With CONSULT-II)
  Courtesy of NISSAN MOTOR CO., U.S.A.
Voltage:

Fully-closed throttle: Approximately 0.5V

Fully-open throttle: Approximately 4V

OK or NG
1. OK: GO TO 4.
2. NG: Check harness for short or open between ECM and TCM regarding throttle position sensor [accelerator pedal position (APP) sensor] circuit. (Main harness)
CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to ON position. (Do not start engine.)
2. Check voltage between TCM terminals 41 and 42 while accelerator pedal is depressed slowly.
  
  Fig 2: Checking Input Signal (Without CONSULT-II)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Voltage:
  
  Fully-closed throttle valve: Approximately 0.5V
  
  Fully-open throttle valve: Approximately 4V
  
  (Voltage rises gradually in response to throttle position.)
OK or NG
1. OK: GO TO 4.
2. NG: Check harness for short or open between ECM and TCM regarding throttle position sensor [accelerator pedal position (APP) sensor] circuit. (Main harness)
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.