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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2220 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test G: LFC 19/21/ DTC B2293 - Restraint System - Air Bag Fault >> Normal Operation

Normal Operation

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The restraints control module (RCM) monitors all front air bag module circuits for faults. The RCM will set a DTC if a short to battery or short to ground fault is detected. The RCM will also set a DTC if the loop resistance is less than 1.36 ohms or greater than 4.70 ohms for the driver air bag and less than 1.04 ohms or greater than 3.72 ohms for the passenger air bag. The normal expected resistance range of driver air bag is 1.84 to 3.96 ohms and 1.50 to 3.04 ohms for the passenger air bag. If a driver air bag loop resistance is between 1.36 and 1.84 or between 3.96 and 4.70 ohms and a passenger air bag resistance is between 1.04 and 1.50 or between 3.04 and 3.72 ohms, a DTC may or may not set, yet there exists a strong potential for an intermittent fault. If the RCM detects a fault on any of the front air bag circuits, it will store DTC B2293 in memory and send a message to the instrument cluster (IC) module to flash LFC 19 or 21 (or higher priority code if one exists) on the air bag warning indicator.

Fault PIDsa Description Fault Trigger Condition
2293_24_OD and 2293_24_CM Air Bag Inflator Circuit Resistance Low - Loop No. 1, Front Passenger Side When the RCM measures less than 1.04 ohms between the passenger air bag loop 1 circuits, a fault will be indicated.
2293_25_OD and 2293_25_CM Air Bag Circuit Open - Loop No. 1, Front Passenger Side When the RCM measures greater than 3.7 ohms between the passenger air bag loop 1 circuits, a fault will be indicated.
2293_26_OD and 2293_26_CM Air Bag Circuit Short to Battery - Loop No. 1, Front Passenger Side When the RCM senses a short to voltage on either of the passenger air bag loop 1 circuits, a fault will be indicated.
2293_27_OD and 2293_27_CM Air Bag Circuit Short to Ground - Loop No. 1, Front Passenger Side When the RCM senses a short to ground on either of the passenger air bag loop 1 circuits, a fault will be indicated.
2293_28_OD and 2293_28_CM Air Bag Inflator Circuit Resistance Low - Loop No. 1, Front Driver Side When the RCM measures less than 1.36 ohms between the driver air bag loop 1 circuits, a fault will be indicated.
2293_29_OD and 2293_29_CM Air Bag Circuit Open - Loop No. 1, Front Driver Side When the RCM measures greater than 4.70 ohms between the driver air bag loop 1 circuits, a fault will be indicated.
2293_30_OD and 2293_30_CM Air Bag Circuit Short to Battery - Loop No. 1, Front Driver Side When the RCM senses a short to voltage on either of the driver air bag loop circuits, a fault will be indicated.
2293_31_OD and 2293_31_CM Air Bag Circuit Short to Ground - Loop No. 1, Front Driver Side When the RCM senses a short to ground on either of the driver air bag loop 1 circuits, a fault will be indicated.

a Fault PIDs that end in OD indicate an on-demand status and are associated with on-demand DTC B2293. Fault PIDs that end in CM CM indicate continuous memory status and are associated with continuous DTC B2293.

This pinpoint test is intended to diagnose the following:

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