Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. 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 ".

Is any malfunction detected by self-diagnostic results?

YES: Check the malfunctioning system. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

NO: GO TO 2.
CHECK CONTROL CABLE
Check the control cable.
- Refer to "CHECKING OF A/T POSITION ".
OK or NG

OK: GO TO 3.

NG: Adjust control cable. Refer to "ADJUSTMENT OF A/T POSITION ".
CHECK A/T FLUID LEVEL
Check A/T fluid level. Refer to "CHECKING THE A/T FLUID (ATF) ".

OK or NG

OK: GO TO 4.

NG: Refill ATF.
CHECK STALL TEST
Check stall revolution with selector lever in "D" position. Refer to "STALL TEST ".

OK or NG

OK: GO TO 5.

NG: GO TO 7.
CHECK LINE PRESSURE
Check line pressure at idle with selector lever in "D" position. Refer to "LINE PRESSURE TEST ".

OK or NG

OK: GO TO 8.

NG - 1: Line pressure high. GO TO 6.

NG - 2: Line pressure low. GO TO 7.
DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. Disassemble A/T. Refer to "DISASSEMBLY ".
3. Check the following items:
  - Oil pump assembly. Refer to "OIL PUMP ".
OK or NG

OK: GO TO 8.

NG: Repair or replace damaged parts.
DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. Disassemble A/T. Refer to "DISASSEMBLY ".
3. Check the following.
  - Oil pump assembly. Refer to "OIL PUMP ".
  - Power train system. Refer to "DISASSEMBLY ".
  - Transmission case. Refer to "DISASSEMBLY ".
OK or NG

OK: GO TO 8.

NG: Repair or replace damaged parts.
CHECK A/T FLUID CONDITION
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

OK: GO TO 9.

NG: GO TO 12.
DETECT MALFUNCTIONING ITEM
- Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "SYMPTOM CHART " (Symptom No.43).
OK or NG

OK: GO TO 10.

NG: Repair or replace damaged parts.
CHECK SYMPTOM
Check again. Refer to "CHECK AT IDLE ".

OK or NG

OK: INSPECTION END

NG: GO TO 11.
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

OK: INSPECTION END

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.43).
OK or NG

OK: GO TO 10.

NG: Repair or replace damaged parts.