ECU Power Source Circuit

THEFT DETERRENT: THEFT DETERRENT SYSTEM: ECU Power Source Circuit

ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the theft warning ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (ECU-B)
(a) Remove the ECU-B fuse from the engine room J/B.
(b) Measure the resistance.
Standard resistance:
Below 1 Ohms

NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)




(a) Disconnect the T5 ECU assembly with the connector still connected.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:





OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR

NG -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (GROUND)




(a) Disconnect the T5 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 THEFT WARNING ECU ASSEMBLY