Antilock Brakes and Traction Control System

Inspection Procedure: Code No. 53 Motor Relay, Motor System:

CODE NO. 53 MOTOR RELAY, MOTOR SYSTEM
The ABS-ECU outputs this diagnostic trouble code for the motor relay and motor in the following cases.

- When motor relay is ON and no signal is input to the motor monitor line (when motor is not operating, etc.)
- When motor relay is OFF and signal is input to the motor monitor line for approximately 5 seconds or more (when motor continues operating, etc.)
- When the motor relay does not function.

Probable Cause
- Malfunction of ABS motor relay
- Malfunction of wiring harness or connector
- Malfunction of hydraulic unit
- Malfunction of ABS-ECU