C2308

DTC C2308 FL INLET VALVE MALFUNCTION
DTC C2316 FR INLET VALVE MALFUNCTION
DTC C2324 RL INLET VALVE MALFUNCTION
DTC C2332 RR INLET VALVE MALFUNCTION

COMPONENT LOCATION

Refer to DTC C1235. C1235

GENERAL DESCRIPTION

The HECU is composed of a ECU (Electronic Control Unit) and an HCU(Hydraulic Control Unit), so the HECU hardware includes all solenoid valves inside the unit as well as the ECU. Solenoid valves are switched to ON, OFF by HECU when the ABS is activated. Solenoid valves function is to increase, decrease or maintain the hydraulic pressure supplied to a wheel cylinder.

DTC DESCRIPTION

The HECU monitors the operation of the valves by checking the drive circuit of the solenoid valves, and then sets this code when the unexpected drive voltage is detected. For example, the HECU sets the DTC if the electrical feedback signal does not match the actuation signal for the corresponding valve.

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 a 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.

COMPONENT INSPECTION

1. Ignition "OFF".
2. Engine "ON".
3. Start and drive vehicle in gear and maintain vehicle speed at approximately 15 km/h or more (9 mph or more).
4. Does warning lamp remain On?

YES
^ Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure.

NO
^ Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.

VERIFICATION OF VEHICLE REPAIR

Refer to DTC C1101. C1101