C2402
DTC C2402 MOTOR-ELECTRICALCOMPONENT LOCATION
Refer to DTC C1235. C1235
GENERAL DESCRIPTION
The HECU supplies battery power to the electric motor with 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 HECU 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. Warning lamp is turned OFF unless fault is detected any more when the IG KEY is turned ON again, and wheel speed is more than 15 km/h.
DTC DETECTING CONDITION:
MONITOR ACTUATION TEST
1. Connect scan tool to Data Link Connector(DLC)
2. Ignition "ON" & Engine "OFF".
3. Select the "Actuation Test" mode on the scan tool.
4. Inspect operating status of inlet valve with Actuation Test.
5. Does an inlet valve operate normally?
YES
^ Fault is intermittent caused by faulty valve or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.
NO
^ Go to "Component Inspection" procedure.
TERMINAL & CONNECTOR INSPECTION
Refer to DTC C1102. C1102
POWER SUPPLY CIRCUIT INSPECTION
1. Ignition "OFF".
2. Disconnect HECU connector.
3. Ignition "ON".
4. Measure voltage between terminal "2" of the HECU harness connector and chassis ground.
5. Is the measured voltage within specifications?
YES
^ Go to "Ground Circuit Inspection" procedure.
NO
^ Check for damaged harness and open or short to GND between the battery terminal(+) and terminal "3 of the HECU harness connector. Check for open or blown 40A ABS fuse referring to "Circuit Diagram". 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 "3 of the HECU harness connector and chassis ground.
4. 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 C1101. C1101