C2112

DTC C2112 Valve Relay Error

Description
The HECU makes the valve relay OFF, when the ignition switch is turned ON, but ON during its initial check.
The HECU checks the valve relay by checking the voltage of the valve power monitoring wire and comparing the signals from the valve relay. The HECU also checks continuity of the valve power monitoring wire.

DTC Description
This code shows in case that there is no hy05tucso_br_rev1-083bcontinuity of the valve power monitoring wire.

C2112:

DTC Detecting Condition

Failsafe Function
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.

Inspection Procedure
1. CHECK POWER SOURCE OF MOTOR.
1) Disconnect the connector from the HECU.

Voltmeter Connected To 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
1) Check ABS fuse (10A) and fusible link (30A).
2) 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.

Voltmeter Connected To 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.