Inspection Procedure

Inspect AM1 M-fuse and ECU-IG fuse.
PREPARATION:
1. Remove the M-fuse from the engine room relay block.
2. Remove the fuse from the driver side J/B.
CHECK:

Check the continuity.

OK:

Continuity
1. NG: Replace M-fuse and/or fuse.
2. OK: Go to Next Step.
Inspect ignition switch.
CHECK:

Check the switch continuity.

OK:

Fig 1: Switch Position & Terminals Continuity Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: View Of Ignition Switch Various Position & Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace ignition switch.
2. OK: Go to Next Step.
Check voltage between terminal IG of TVIP ECU and body ground.
PREPARATION:

Disconnect the T12 TVIP ECU connector.

CHECK:

Check the voltage between the T12 TVIP ECU wire harness side connector and body ground.

Fig 3: Terminals Voltage Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:

Fig 4: View Of T12 TVIP ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Repair or replace harness and connector.
2. OK: Go to Next Step.
Replace TVIP ECU.