Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer "CONSULT FUNCTION (TRANSMISSION) ".

Is a malfunction in the CAN communication indicated in the results?

YES: Check CAN communication line. Refer to U1000 CAN COMM CIRCUIT .

NO: GO TO 2.

CHECK INPUT SIGNAL

With CONSULT

Start engine.
Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT.

Drive vehicle and read out the value of "VHCL/S SE-MTR".

Item name	Condition	Display value (Approx.) (km/h)
VHCL/S SE-MTR	During driving	Approximately matches the speedometer reading.

OK or NG

OK: GO TO 4.

NG: GO TO 3.

CHECK COMBINATION METERS
Check combination meter. Refer to "WORK FLOW ".

OK or NG

OK: GO TO 4.

NG: Repair or replace damaged parts.
CHECK DTC
Perform "DTC Confirmation Procedure".
- Refer to "DTC CONFIRMATION PROCEDURE ".
  OK or NG
  
  OK: INSPECTION END
  
  NG: GO TO 5.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to "DIAGNOSIS PROCEDURE ".

OK or NG

OK: GO TO 6.

NG: Repair or replace damaged parts.
DETECT MALFUNCTIONING ITEM
Check the following items:
- The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
  OK or NG
  
  OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM ".
  
  NG: Repair or replace damaged parts.