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Home >> Ford >> 2005 >> Focus ZX5 S, Automatic >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Supplemental Inflatable Restraint System >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test Q: DTC B1878 - Seat Belt Driver Pretensioner Circuit Short to Battery Fault >> Normal Operation

Normal Operation

The restraints control module (RCM) checks all of the safety belt pretensioners for faults. If the RCM detects a short to voltage on a driver safety belt pretensioner circuit, it will store diagnostic trouble code (DTC) B1878 in memory and illuminate the air bag indicator.

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