ECU Power Source Circuit

THEFT DETERRENT: TOYOTA VEHICLE INTRUSION PROTECTION SYSTEM: ECU Power Source Circuit

ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the TVIP ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FUSE (ECU-B)





(a) Remove the fuse from the instrument panel J/B.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK TVIP ECU





(a) Disconnect the TVIP ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:





NG -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (TVIP ECU - BODY GROUND)





(a) Disconnect the TVIP ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TVIP ECU