Diagnosis Procedure
1. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

2. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.

3. CHECK BCM INPUT VOLTAGE

Special Repair Requirement
1. REQUIRED WORK WHEN REPLACING BCM
Combination switch input circuit
ECU diagnosis informationLow brake fluid warning light
When the ignition switch is placed in the ON
position, the light warns of a low brake fluid level.
If the light comes on while the engine is running,
with the parking brake not applied, stop the vehicle
and perform the following:
1. Check the brake fluid level. Add brake fluid
as necessary. ...
Power supply routing circuit
Wiring Diagram -Battery Power Supply -
Wiring Diagram -Accessory Power Supply -
Wiring Diagram -Ignition Power Supply -
Fuse
If fuse is blown, be sure to eliminate cause of malfunction before
installing new fuse.
U ...
Power consumption control system
System Diagram
System Description
OUTLINE
BCM incorporates a power saving control function that reduces the
power consumption according to the
vehicle status.
BCM switches the status (control mode) by itself with the power
saving control function. It performs the sleep
reques ...