Driver Side J/B ECU Power Source Circuit

ENGINE HOOD / DOOR: LUGGAGE COMPARTMENT DOOR OPENER SYSTEM: Driver Side J/B ECU Power Source Circuit
- Driver Side J/B ECU Power Source Circuit

DESCRIPTION

* This circuit provides power to operate the cowl side junction block ECU LH.

HINT
Below, the driver side junction block ECU is referred to as the cowl side junction block ECU LH.

WIRING DIAGRAM







PROCEDURE

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

(a) Remove the TRK OPN fuse from the cowl side junction block LH.

(b) Remove the MPX-B and D/C CUT fuses from the engine room No. 1 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 (COWL SIDE JUNCTION BLOCK LH - BATTERY AND BODY GROUND)





(a) Disconnect the PM, PL, PA and PD 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 -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE