DTC C2112 Valve Relay Error: DTC Detecting Condition
DTC DETECTION CONDITION AND POSSIBLE CAUSE
| Item |
Detecting Condition |
Possible cause |
| DTC Strategy |
- Battery Voltage Monitoring
|
- Open or short of power supply circuit (ABS1)
- Faulty HECU
|
| Case1 (Open) |
Detect Mode |
- Initial Check
- Outside the ABS control cycle
- Inside the ABS control cycle
- Diagnosis mode
|
| Enable Conditions |
- If the valve relay is switched on and the reference voltage of valve relay < 5 ± 0.5V continuously for 56ms, the failure is detected.
|
| Case2 (Short or Leakage) |
Detect Mode |
- Initial Check
- Failure mode
|
| Enable Conditions |
- If the valve relay is switched off and the reference voltage of valve relay > 6 ± 0.5V continuously for 56ms, the failure is detected.
- If the valve relay is switched off and all solenoid drivers are switched off and reference voltage of valve relay < 2.5 ± 0.5V continuously for 56ms, the failure is detected.
|
| Fail Safe |
- System down. The ABS/EBD/ESC functions are inhibited.
- The valve relay and all solenoids are prevented from being switched on.
- The ABS/EBD/ESC warning lamps are activated.
|