The HECU monitors the solenoid valve operating circuit. If there is no continuity of the solenoid valve, when the HECU switches the solenoid valve ON, it is a cause an open or short in the circuit of the solenoid coil or harness.
This code shows in case that there is an open or short in the circuit of the solenoid coil or harness.
DTC No | Condition | Possible Cause |
C2380 | - If the valve relay is switched ON and corresponding solenoid driver OFF and the voltage of solenoid, less than 3.5±0.5V continuously for 56ms, the failure is detected. - If the valve relay is switched ON and corresponding solenoid driver ON and the voltage of solenoid, more than 1.5±0.5V continuously for 56ms, the failure is detected. | - Open/short in the solenoid valve circuit. - Faulty HECU |
The system stops. the ABS, TCS(ESP) and the EBD functions are inhibited. The ABS, TCS(ESP) and the EBD warning lamps are ON. The valve relay and all solenoids are OFF.
CHECK THE DTC
Clear the DTC using the Hi-Scan(pro).
Turn the ignition wsitch OFF.
Turn the ignition switch ON, and check if the same DTC is stored in the memory.
Is the same DTC output?
▶ Problem is intermittent and the HECU memory was not cleared.
▶ Check power source of valve relay
CHECK POWER SOURCE OF VALVE RELAY
Disconnect the connector from the HECU.
Measure the voltage between the terminals 25 and 8, 24 of the HECU connector.
Specification: Battery positive(B+)
Is the voltage within the specification?
Check and replace fuse (10A) and fusible link (30A).
Check and repair harness or connector.
▶ Check circuit for continuity to ground.
CHECK CIRCUIT FOR CONTINUITY TO GROUND.
Disconnect the connector from the HECU.
Measure the resistance between terminals 8(-), 24(-) of the HECU connector and the body ground.
Is the resistance below 1Ω?
▶ Check and readjust the installing of the body ground.
▶ Replace the HECU then reckeck.
