Intelligent Key Unit

Diagnosis Procedure

Diagnosis Procedure

1. CHECK FUSE

   1. Check that the following fuse is not blown:

      Terminal	Signal name	Fuse No.	Capacity
      1	Intelligent Key unit power supply	31	10 A

   Is the fuse blown?

   YES >>

   Replace the blown fuse after repairing the affected circuit.

   NO >>

   GO TO 2.

2. CHECK POWER SUPPLY CIRCUIT

   1. 1. Disconnect Intelligent Key unit connector.

      2. Check voltage between Intelligent Key unit connector and ground.

         Intelligent Key unit		—	Voltage (Approx.)
         Connector	Terminal
         M155	1	Ground	Battery voltage

   Is the inspection result normal?

   YES >>

   GO TO 3.

   NO >>

   Repair or replace harness or connectors.

3. CHECK GROUND CIRCUIT

   1. Check continuity between Intelligent Key unit connector and ground.

      Intelligent Key unit		—	Continuity
      Connector	Terminal
      M155	29	Ground	Yes

   Is the inspection result normal?

   YES>>

   Inspection End.

   NO>>

   Repair or replace harness or connectors.