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-DIAGNOSIS RESULTS
Perform self-diagnosis.

Is any malfunction detected by self-diagnostic results?

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

NO: GO TO 2.

CHECK 1ST POSITION SWITCH CIRCUIT

With CONSULT-II

Turn ignition switch "ON".
Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.

Fig 1: Identifying CONSULT II Display - DATA MONITOR

Read out "1 POSITION SW" moving switch selector lever to each position.

DISPLAY VALUE CHART

Monitor item	Condition	Display value
1 POSITION SW	When setting the selector lever to "1" position.	ON
1 POSITION SW	When setting selector lever to other positions.	OFF

Without CONSULT-II

Turn ignition switch "ON". (Do not start engine)

Check voltage between A/T device harness connector terminal and ground.

CONNECTOR TERMINAL DATA CHART

Item	Connector No.	Terminal No.	Condition	Data (Approx.)
1st position switch	M156	9 - Ground	When setting the selector lever to "1" position.	0V
1st position switch	M156	9 - Ground	When setting selector lever to other positions.	Battery voltage

OK or NG

OK: GO TO 3.

NG: Repair or replace damaged parts.

CHECK A/T FLUID LEVEL
Check the A/T fluid level. Refer to "CHECKING THE A/T FLUID (ATF) ".

OK or NG

OK: GO TO 4.

NG: Refill ATF.
CHECK CONTROL CABLE
Check the control cable.
- Refer to "CHECKING OF A/T POSITION ".
OK or NG

OK: GO TO 5.

NG: Adjust control cable. Refer to "ADJUSTMENT OF A/T POSITION ".
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 6.

NG: GO TO 9.
DETECT MALFUNCTIONING ITEM
- Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to "SYMPTOM CHART " (Symptom No.53).
OK or NG

OK: GO TO 7.

NG: Repair or replace damaged parts.
CHECK SYMPTOM
Check again. Refer to "CRUISE TEST - PART 3 ".

OK or NG

OK: INSPECTION END

NG: GO TO 8.
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.53).
OK or NG

OK: GO TO 7.

NG: Repair or replace damaged parts.