Restraints Ignition Relay
Table of contents
B1123 MERCURY Possible Causes
- Faulty Restraints Ignition Relay
- Restraints Ignition Relay harness is open or shorted
- Restraints Ignition Relay circuit poor electrical connection
- Faulty Restraints Control Module (RCM)
How do I fix code B1123 MERCURY?
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
- B1123:11 Restraints Ignition Relay: Circuit Short to Ground
- B1123:12 Restraints Ignition Relay: Circuit Short to Battery
Cost of diagnosing the B1123 MERCURY code
The cost of diagnosing the B1123 MERCURY 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.
Possible Symptoms
- Air Bag Warning Light ON
B1123 MERCURY Description
The Battery Energy Control Module (BECMB) provides battery voltage to the Restraints Control Module (RCM) and, if equipped, Passenger Airbag Deactivation (PAD) indicator (vehicles without center stack display only). The BECMB monitors each circuit for a short to voltage or a short to ground. If a fault is detected, the BECMB stores the appropriate Diagnostic Trouble Code (DTC) in memory and sends a message to the RCM over HS-CAN1 and HS-CAN2, indicating that a BECMB fault is present.