Diagnostic Procedure

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

CHECK A/T FLUID TEMPERATURE SENSOR 1 SIGNAL
With CONSULT-II
1. Start engine.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out the value of "ATF TEMP SE 1".
OK or NG
1. OK: GO TO 2.
2. NG: GO TO 3.
  
  Fig 1: CONSULT-II Display - Data Monitor
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK A/T FLUID TEMPERATURE SENSOR 2 SIGNAL
With CONSULT-II
1. Start engine.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out the value of "ATF TEMP SE 2".
OK or NG
1. OK: GO TO 8.
2. NG: GO TO 5.
  
  Fig 2: CONSULT-II Display - Data Monitor
  Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK A/T FLUID TEMPERATURE SENSOR 1
Check A/T fluid temperature sensor 1. Refer to "A/T FLUID TEMPERATURE SENSOR 1 ".

OK or NG
1. OK: GO TO 4.
2. NG: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".

CHECK SUB-HARNESS

Disconnect park/neutral position switch connector and TCM connector.

Check continuity between park/neutral position switch connector terminals and TCM connector terminals.

PARK/NEUTRAL POSITION SWITCH CONNECTOR TERMINALS AND TCM CONNECTOR TERMINALS CONTINUITY

Item	Connector	Terminal	Continuity
Park/neutral position switch connector	F505	6	Yes
TCM connector	F503	19	Yes
Park/neutral position switch connector	F505	7	Yes
TCM connector	F503	18	Yes

If OK, check harness for short to ground and short to power.

OK or NG

OK: GO TO 7.
NG: Replace open circuit or short to ground and short to power in harness or connectors.

Fig 3: Checking Park/Neutral Position Switch Connector Terminals And TCM Connector Terminals Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK A/T FLUID TEMPERATURE SENSOR 2
Check A/T fluid temperature sensor 2. Refer to "A/T FLUID TEMPERATURE SENSOR 2 ".

OK or NG
1. OK: GO TO 6.
2. NG: Replace the A/T fluid temperature sensor 2. Refer to "A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION ".

CHECK TERMINAL CORD ASSEMBLY

Disconnect A/T fluid temperature sensor 2 connector and TCM connector.

Check continuity between A/T fluid temperature sensor 2 connector terminals and TCM connector terminals.

A/T FLUID TEMPERATURE SENSOR 2 CONNECTOR TERMINALS AND TCM CONNECTOR TERMINALS CONTINUITY

Item	Connector	Terminal	Continuity
A/T fluid temperature sensor 2 connector	F507	1	Yes
TCM connector	F502	3	Yes
A/T fluid temperature sensor 2 connector	F507	2	Yes
TCM connector	F502	5	Yes

If OK, check harness for short to ground and short to power.

OK or NG

OK: GO TO 7.
NG: Replace open circuit or short to ground and short to power in harness or connectors.

Fig 4: Checking A/T Fluid Temperature Sensor 2 Connector Terminals And TCM Connector Terminals Continuity
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
1. Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".
2. Reinstall any part removed.
OK or NG
1. OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. NG: Repair or replace damaged parts.
CHECK DTC
Perform "DTC Confirmation Procedure".
- Refer to "DTC Confirmation Procedure ".
OK or NG
1. OK: INSPECTION END
2. NG: GO TO 1.