ABS Power Relay Output Short Circuit To Ground
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
C1114 GMC Possible Causes
- ABS Power Relay Wiring intermittently shorted to ground
- Faulty / intermittent connection at the Anti-Lock Brake Control Module (ABCM or EBCM)
- Faulty Anti-Lock Brake Control Module
How do I fix code C1114 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- This is typically an electrical wiring connection issue at / or inside the ABS Module being monitored by the manufacturer.
- It can occur if:
- – The relay windings are bad. This may mean it would need a control module (relay can be part of the module).
- – There is outdated software. Perform a service bulletin search for updated software on the ABS control module and Trailer Brake Control Modules.
Cost of diagnosing the C1114 GMC code
The cost of diagnosing the C1114 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
If the ABCM EBCM is unable to test the ABS power relay any time after the ignition switch is first turned to the “Run” position, code C1114 is set in memory.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1114 GMC Description
When the driver stops too fast, and one or both rear wheels begin to lock up, the ABS system takes over. It sees the wheel or wheels slowing down too rapidly by way of wheel speed sensors. When this happens, it shuts off brake fluid to the wheel with the inlet valve/coil, and releases the pressure with an outlet valve/coil. The ABS Power Relay is typically found on vehicles with 4 Wheel Anti-Lock Brakes. The ABS system checks to be sure that the relay electrical circuit is ok every time the key is turned on and the ABS module is powered up. If there is a problem with the wiring to the relay or the relay itself, the ABS module will communicate over a data bus to the instrument cluster to turn on the amber Anti-Lock Light and the Red Brake Warning Light, and ABS will be disabled. In this case, the module has checked the ABS power relay wiring and found the circuit has an electrical problem. This sets a C1114 in memory.