Diagnostic Procedure

Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is any malfunction in the CAN communication indicated in the results? 

Yes: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".

No: GO TO 2.

1. Turn ignition switch "ON". (Do not start engine.)
2. Check the voltage between tow mode switch connector M67 terminal 1 and ground.
   VOLTAGE SPECIFICATION
   
   

   Condition	Tow mode switch	Data (Approx.)
   When ignition switch is turned to "ON"	ON	0V
   	OFF	Battery voltage

   Fig 1: Checking Voltage Between Tow Mode Switch Connector M67 Terminal 1 And Ground

   

OK or NG 

OK: INSPECTION END 

NG: GO TO 3.

1. Turn ignition switch "OFF".
2. Disconnect tow mode switch connector.
3. Check continuity between tow mode switch terminals 1 and 2.
   CONTINUITY SPECIFICATION
   
   

   Condition	Continuity
   Tow mode switch "ON"	Yes
   Tow mode switch "OFF"	No

   Fig 2: Checking Continuity Between Tow Mode Switch Terminals 1 And 2

   

OK or NG 

OK: GO TO 4.

NG: Repair or replace tow mode switch.

Check the following items. If any items are damaged, repair or replace damaged parts.

• Harness for short or open between combination meter connector terminal 35 and tow mode switch connector terminal 1.
• Harness for short or open between tow mode switch connector terminal 2 and ground.

OK or NG 

OK: GO TO 5.

NG: Repair or replace damaged parts.

Check the combination meter. Refer to "HOW TO PROCEED WITH TROUBLE DIAGNOSIS ".

OK or NG 

OK: INSPECTION END 

No: Repair or replace damaged parts.