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 STARTER RELAY
WITH CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "SELECTION FROM MENU" in "DATA MONITOR" mode for "A/T" with CONSULT-II and check monitor "STARTER RELAY" ON/OFF.
  
  Fig 1: Starter Relay Inspection Chart (With Consult II)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Display DATA MONITOR Screen
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)
2. Check voltage between the IPDM E/R connector and ground.
  
  Fig 3: IPDM E/R Connector & Ground Voltage Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Voltage Between IPDM E/R Connector Terminal 48 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 5.
2. NG: GO TO 2.
CHECK HARNESS BETWEEN A/T ASSEMBLY HARNESS CONNECTOR AND IPDM E/R CONECTOR.
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector and IPDM E/R connector.
  
  Fig 5: A/T Assembly Harness Connector And IPDM E/R Connector Resistance Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 6: Checking Continuity Between A/T Assembly Harness Connector & IPDM E/R Connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check continuity between A/T assembly harness connector and IPDM E/R connector.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
1. OK: GO TO 3.
2. NG: Repair open circuit or short to ground or short to power in harness or connectors.
CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".
2. Disconnect A/T assembly harness connector and TCM connector.
3. Check continuity between A/T assembly harness connector terminal and TCM connector terminal.
  
  Fig 7: Checking Continuity Between A/T Assembly Harness Connector Terminal & TCM Connector Terminal
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 8: A/T Assembly Harness Connector Terminal & TCM Connector Terminal Continuity Chart
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
1. OK: GO TO 4.
2. NG: Replace open circuit or short to ground and short to power in harness or connectors.
DETECT MALFUNCTIONING ITEM
Check the following items:
- Starter relay, Refer to "STARTING SYSTEM ".
- IPDM E/R, Refer to "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) ".
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 2.