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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1015 (Supplemental Inflatable Restraint System -- F150 Pickup) >> Diagnosis And Testing >> Pinpoint Tests - Air Bag and Safety Belt Pretensioner Supplemental Restraint System SRS >> Pinpoint Test H: LFC 14/DTC B1921 - Air Bag Diagnostic Monitor Ground Circuit Open >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: The tightening torque of the RESTRAINTS CONTROL MODULE RCM retaining bolts is critical for correct air bag supplemental restraint system SRS operation. Refer to RESTRAINTS CONTROL MODULE RCM  for correct torque values.
NOTE: A resistance difference as low as 10 ohms may set the LFC.

The RESTRAINTS CONTROL MODULE RCM monitors the resistance between the ground connections of the case mounting and the reference ground at C310a pin 16, circuit 1203 (BK/LB).

If the RCM detects a difference in resistance, it will store diagnostic trouble code (DTC) B1921 in memory and flash lamp fault code (LFC) 14 (or higher priority code if one exists) on the air bag indicator.

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