Component Tests and General Diagnostics

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: ECU Power Source Circuit
- ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the transponder key ECU assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSES (ECU-B AND IGN)

(a) Remove the ECU-B fuse from the engine room R/B and J/B.

(b) Remove the IGN fuse from the driver side J/B.

(c) Measure the resistance of the fuse.

Standard resistance:

Below 1Ohms

(d) Reinstall fuses.

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

2. INSPECT IGNITION SWITCH ASSEMBLY

(a) Remove the ignition switch.





(b) Measure the resistance of the switch.

Standard resistance:





NG -- REPLACE IGNITION SWITCH ASSEMBLY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - BATTERY AND BODY GROUND)

(a) Disconnect the T10 ECU connector.





(b) Measure the resistance and voltage of the wire harness side connector.

Standard resistance:





Standard voltage:





(c) Reconnect the ECU connector.

NG -- REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR

OK -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal