Diagnosis Procedure

1. CHECK DTC
   1. Turn ignition switch ON.
   2. Select "SELF-DIAG RESULTS" mode for "TRANSMISSION" with CONSULT-III.
   3. Erase self-diagnostic results. Refer to "OBD-II DIAGNOSTIC TROUBLE CODE (DTC) ".
   4. Turn ignition switch OFF, and wait for 5 seconds or more.
   5. Start engine.
   6. Confirm self-diagnostic results again. Refer to "CONSULT-III FUNCTION (TRANSMISSION) ".

   Is the "P1701 TCM-POWER SUPPLY" displayed? 

   YES: GO TO 2.

   NO: INSPECTION END 

2. CHECK TCM POWER SOURCE, STEP 1
   1. Turn ignition switch OFF.
   2. Check voltage between TCM connector terminal and ground.
   CONNECTOR TERMINAL VOLTAGE CHART
   
   

   Name	Connector	Terminal	Condition	Voltage (Approx.)
   Power supply (memory backup)	F23	45 - Ground	Always	Battery voltage
   		47 - Ground

   OK or NG 

   OK: GO TO 3.

   NG: GO TO 4.

3. CHECK TCM POWER SOURCE, STEP 2
   1. Turn ignition switch ON.
   2. Check voltage between TCM connector terminals and ground.
   CONNECTOR TERMINAL VOLTAGE CHART
   
   

   Name	Connector	Terminal	Condition	Voltage (Approx.)
   Power supply	F23	46 - Ground	Courtesy of NISSAN MOTOR CO., U.S.A.	Battery voltage
   			Courtesy of NISSAN MOTOR CO., U.S.A.	0 V
   Power supply		48 - Ground	Courtesy of NISSAN MOTOR CO., U.S.A.	Battery voltage
   			Courtesy of NISSAN MOTOR CO., U.S.A.	0 V
   Power supply (memory backup)		45 - Ground	Always	Battery voltage
   		47 - Ground

   OK or NG 

   OK: GO TO 5.

   NG: GO TO 4.

4. DETECT MALFUNCTIONING ITEM

   Check the following.

   • Harness for short or open between battery and TCM connector terminal 45, 47
   • Harness for short or open between ignition switch and TCM connector terminal 46, 48
   • 10 A fuse (No.49, located in the IPDM E/R)
   • 20 A fuse (No.53, located in the IPDM E/R)
   • Ignition switch. Refer to POWER SUPPLY ROUTING CIRCUIT .

   OK or NG 

   OK: GO TO 5.

   NG: Repair or replace damaged parts.

5. CHECK TCM GROUND CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect TCM connector.
   3. Check continuity between TCM connector terminals and ground.
   CONNECTOR TERMINAL CONTINUITY CHART
   
   

   Name	Connector	Terminal	Continuity
   Ground	F23	5 - Ground	Yes
   		42 - Ground

   OK or NG 

   OK: GO TO 6.

   NG: Repair open circuit or short to ground or short to power in harness or connectors.

6. CHECK DTC

   Perform "DTC CONFIRMATION PROCEDURE ".

   OK or NG 

   OK: INSPECTION END 

   NG: GO TO 7.

7. CHECK TCM
   1. Check TCM input/output signals. Refer to "TCM INPUT/OUTPUT SIGNAL REFERENCE VALUE ".
   2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.

   OK or NG 

   OK: INSPECTION END 

NG: Repair or replace damaged parts.