C2402

DTC C2402 MOTOR-ELECTRICAL

COMPONENT LOCATION:

GENERAL DESCRIPTION
The ABS ECU supplies battery power to the electric motor by way of a motor relay which is controlled by the Electronic Control Unit (ECU). The electric motor pump supplies hydraulic pressure to all wheel brake calipers by operating the piston inside the pump.

DTC DESCRIPTION
The ABS/ESC ECU monitors the pump motor relay or fuse open, open or short in motor or motor lock and then sets this code if a malfunction is detected.

DTC DETECTING CONDITION

DTC DETECTING CONDITION:

TERMINAL & CONNECTOR INSPECTION
Refer to DTC C1101. C1101

POWER SUPPLY CIRCUIT INSPECTION
1. Ignition OFF
2. Disconnect HECU connector.
3. Ignition ON & Engine "OFF".





4. Measure voltage between terminal 2 of the HECU harness connector and chassis ground.
Specification: Approximately B+
Is the measured voltage within specifications?
YES
- Go to Ground Circuit Inspection procedure.
NO
- Check for open or short in power harness between battery terminal(+) and terminal 2 of the HECU harness connector. Check for open or blown 40A fuse. Repair as necessary and then go to Verification of vehicle Repair procedure.

GROUND CIRCUIT INSPECTION
1. Ignition "OFF".
2. Disconnect HECU connector.
3. Measure resistance between terminal "1"of the HECU harness connector and chassis ground.
Specification: Approximately below 1 Ohm





Is the measured resistance within specifications?
YES
- Go to Component Inspection procedure.
NO
- Check for damaged harness and poor connection between terminal 1 of the HECU harness connector and chassis ground. Repair as necessary and then go to Verification of vehicle Repair procedure.

COMPONENT INSPECTION
Refer to DTC C2308. C2308

VERIFICATION OF VEHICLE REPAIR
Refer to DTC C2308. C2308