C2402
DTC C2402 MOTOR - ELECTRICALDESCRIPTION
When the ABS system operates, the HECU turns the ABS motor relay ON so that operates the ABS pump motor.
DTC DESCRIPTION
This code shows in case that there is no signal to the motor monitoring wire or an error on the motor power.
CAUTION: Keep a vehicle idling because the compulsive operating of the motor shall cause the discharge of the battery, when testing the actuator.
DTC Detecting Condition:
FAIL-SAFE FUNCTION
1. Motor error without the ABS control only the ABS, TCS (ESC) functions are inhibited. The ABS,TCS (ESC) warning lamps are ON, but the EBD warning lamp OFF.
2. Motor error with the ABS control : inhibit the ABS control of front wheels, allow ABS control of the rear wheels. After the ABS control has completed, the ABS,TCS (ESC) warning lamps are ON.
INSPECTION PROCEDURE
1. CHECK POWER SOURCE OF MOTOR.
1. Disconnect the connector from the HECU.
2. Measure the voltage between the terminals 9 (+) and 8 (-), 24 (-) of the HECU connector.
Specification: Battery positive (+)
Is the voltage within the specification?
NO
3. Check ABS fuse (10 A) and fusible link (30 A).
4. Check and repair harness or connector.
YES - Check circuit for continuity to ground.
2. CHECK CIRCUIT FOR CONTINUITY TO GROUND.
1. Disconnect the connector from the HECU.
2. Measure the resistance between terminals 8 (-), 24 (-) of the HECU connector and the body ground.
Is the resistance below 1 ohm?
NO - Check and readjust the installing of the body ground.
YES - Test motor actuation by using hi-scan (pro).
3. TEST MOTOR ACTUATION BY USING HI-SCAN (PRO).
Is the sound of motor operating heard?
YES - Check repair, if necessary, harness and connector.
NO - Replace the HECU then recheck.