Inspection Procedure

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

Check the continuity.

OK:

Continuity
1. NG: Replace M-fuse and/or fuse.
2. OK: Go to Next Step.
Check voltage between terminals +B1, +B2 and E1 of TVIP ECU.
PREPARATION:

Disconnect the T11 and T12 TVIP ECU connectors.

Fig 1: Terminals Voltage Specifications
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK:

Check the voltage between the wire harness side connectors.

OK:

Fig 2: View Of T11 & 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.