Diagnosis Procedure

1. Check that the following fuses are not blown.

   Terminal No.	Signal name	Fuse No.
   1	Battery power supply	20 (10A)
   10	Ignition signal	55 (5A)

Are the fuses blown?

YES>>

Replace the blown fuse after repairing the affected circuit.

NO>>

GO TO 2.

1. 1. Ignition switch OFF.
   2. Disconnect TCU connector.
   3. Check voltage between TCU connector and ground.

      TCU		Ground	Condition	Voltage(Approx.)
      Connector	Terminal
      M126	1	-	Ignition switch OFF	Battery voltage
      	10		Ignition switch ON

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness or connectors.

1. 1. Ignition switch OFF.
   2. Check continuity between TCU connector and ground.

      TCU		Ground	Continuity
      Connector	Terminal
      M126	28	-	Yes
      	29

Is the inspection result normal?

YES>>

Inspection End.

NO>>

Repair or replace harness or connectors.