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 cowl side junction block (multiplex network body ECU).

WIRING DIAGRAM







PROCEDURE

1. INSPECT FUSE (D/C CUT, MPX-B)

(a) Remove the D/C CUT and MPX-B fuses from the engine room No. 1 junction block.

(b) Measure the resistance of the fuses.

Standard resistance:

Below 1 Ohms

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

2. CHECK WIRE HARNESS (COWL SIDE JUNCTION BLOCK RH - BATTERY AND BODY GROUND)

(a) Disconnect the DD and DK junction block connectors.





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

Standard voltage:





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)