C1253

DTC C1253 Motor Relay Circuit

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The ABS and TRAC motor relay supplies power to the hydraulic brake booster pump motor. While the ABS & BA & TRAC & VSC are activated, the ECU switches the motor relay ON and operates the hydraulic brake booster pump motor.

Wiring Diagram:

INSPECTION PROCEDURE

Step 1 - 2:

Step 3 - 4:

Step 5 - 6:

HINT: Start the inspection from step 1, in case of using the LEXUS hand-held tester and start from step 3, in case of not using LEXUS hand-held tester.