Pre-Collision System

PRE-COLLISION: PRE-COLLISION SYSTEM: Power Source Circuit
- Power Source Circuit

DESCRIPTION

This circuit supplies power to the seat belt control ECU when the engine switch is on (IG).

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT
Start the engine before inspection. Check the IG1 NO. 1 relay or battery if the starting system does not start.

PROCEDURE

1. INSPECT FUSE (ECU-IG No. 1, PSB)

(a) Remove the ECU-IG No. 1 and PSB fuses from the main body ECU.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

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

2. CHECK HARNESS AND CONNECTOR (SEAT BELT CONTROL ECU - BATTERY AND BODY GROUND)

(a) Disconnect the E41 and E42 seat belt control ECU connectors.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE SEAT BELT CONTROL ECU Removal