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 SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Do the self-diagnostic results indicate torque converter clutch solenoid valve, engine speed signal, turbine revolution sensor, CAN communication?
1. YES: Check the malfunctioning system. Refer to "DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE ", "DTC P0725 ENGINE SPEED SIGNAL ", "DTC P1716 TURBINE REVOLUTION SENSOR ", "DTC U1000 CAN COMMUNICATION LINE ".
2. NO: GO TO 2.
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to "CHECKING A/T FLUID ".

Fig 1: Checking A/T Fluid Level
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 3.
2. NG: Refill ATF.
CHECK A/T FLUID CONDITION

Fig 2: Checking A/T Fluid Condition
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Remove oil pan. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. Check A/T fluid condition. Refer to "FLUID CONDITION CHECK ".
OK or NG
1. OK: GO TO 4.
2. NG: GO TO 7.
DETECT MALFUNCTIONING ITEM
- Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "SYMPTOM CHART " (Symptom No. 25).
OK or NG
1. OK: GO TO 5.
2. NG: Repair or replace damaged parts.
CHECK SYMPTOM
Check again. Refer to "CRUISE TEST - PART 1 ".

OK or NG
1. OK: INSPECTION END
2. NG: GO TO 6.
PERFORM TCM INSPECTION
1. Perform TCM input/output signals inspection. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUES ".
2. If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
1. OK: INSPECTION END
2. NG: Repair or replace damaged parts.
DETECT MALFUNCTIONING ITEM
- Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "SYMPTOM CHART " (Symptom No. 25).
OK or NG
1. OK: GO TO 5.
2. NG: Repair or replace damaged parts.