Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is a malfunction in the CAN communication indicated in the results?
1. YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".
2. NO: GO TO 2.
CHECK THROTTLE POSITION SIGNAL CIRCUIT
With CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Depress accelerator pedal and read out the value of "CLSD THL POS" and "W/O THL POS".
Fig 1: Accelerator Pedal Operation And Monitor Item Description Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Display DATA MONITOR Mode Screen
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: INSPECTION END
2. NG: Check the following items. If NG, repair or replace damaged parts.
  - Perform the self-diagnosis for "ENGINE" with CONSULT-II.
  - Open circuit or short to ground or short to power in harness or connectors.
  - Pin terminals for damage or loose connection with harness connector.