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, DOME)
(a) Remove the ECU-B fuse and DOME fuse from the engine room R/B.
(b) Measure the resistance.
Standard resistance:
Below 1 Ohms
(c) Reinstall the fuses.
NG -- REPLACE FUSE
OK -- Continue to next step.
2. INSPECT THEFT WARNING ECU ASSEMBLY

(a) Remove the theft warning ECU assembly without disconnecting the D26 connector.
(b) Measure the voltage.
Standard voltage:

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

(a) Disconnect the D26 theft warning ECU connector.
(b) Measure the voltage.
Standard voltage:

(d) Reconnect the theft warning ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE THEFT WARNING ECU ASSEMBLY