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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 Y: DTC B1921 - Air Bag Diagnostic Monitor Ground Circuit Open >> Possible Causes

Possible Causes

An air bag diagnostic monitor ground circuit open can be caused by:

An RCM or RCM bracket that is not securely mounted.
Damaged wiring, terminals or connectors.
A faulted RCM.

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