Component Tests and General Diagnostics

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Power Source Circuit

Power Source Circuit

DESCRIPTION

This circuit provides power to operate the transponder key ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (IG2, ECU-B, AM2, DCC)
(a) Remove the IG2 fuse from the instrument panel junction block.
(b) Remove the ECU-B, DCC and AM2 fuses from the engine room relay block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
2. CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSEMBLY - BATTERY AND BODY GROUND)




(a) Disconnect the T8 ECU connector.
(b) Measure the resistance and voltage of the wire harness and connector.
Standard resistance:





Standard voltage:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE TRANSPONDER KEY ECU ASSEMBLY