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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1975 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Supplemental Restraint System (SRS) >> Pinpoint Test F: DTC B2293 >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The Restraints Control Module (RCM) continuously monitors driver/passenger air bag loop 1 and 2 circuits for the following faults:

The RCM  analyzes the deployment loop resistance and uses this measurement in combination with an age correction factor to determine if a fault exists. The value displayed in the PID is the deployment loop resistance as measured by the RCM  . If the value displayed is lower or higher than the desired range (refer to diagram below), the RCM  can set a DTC. As the deployment loop resistance drifts farther outside the desired range, the chance for a DTC increases. The RCM  fault trigger threshold may vary as the vehicle ages. Small variations in resistance can occur due to the effect of road vibrations on terminal fit and/or temperature changes. These variables can result in an intermittent fault. For this reason, the test will require the PID value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand DTC at time of diagnosis. Following this direction will help make sure that minor changes in resistance do not create a repeat concern. This test will use a process of elimination to diagnose each part of the deployment loop circuit including:

Driver Air Bag 

Fig 1: Driver Air Bag Diagnostic Chart
G06504681Courtesy of FORD MOTOR CO.

Passenger Air Bag 

Fig 2: Passenger Air Bag Diagnostic Chart
G06504672Courtesy of FORD MOTOR CO.
FAULT TRIGGER CONDITION CHART

Fault PIDs (1) Description Fault Trigger Condition
2293_16_OD and 2293_16_CM Air Bag Inflator Circuit Resistance Low - Loop No. 2, Front Passenger Side When the Restraints Control Module (RCM) measures less than the desired range between the passenger air bag loop 2 circuits, a fault will be indicated.
2293_17_OD and 2293_17_CM Air Bag Circuit Open - Loop No. 2, Front Passenger Side When the RCM  measures greater than the desired range between the passenger air bag loop 2 circuits, a fault will be indicated.
2293_18_OD and 2293_18_CM Air Bag Circuit Short to Battery - Loop No. 2, Front Passenger Side When the RCM  senses a short to voltage on either passenger air bag loop circuit, a fault will be indicated.
2293_19_OD and 2293_19_CM Air Bag Circuit Short to Ground - Loop No. 2, Front Passenger Side When the RCM  senses a short to ground on either passenger air bag loop 2 circuit, a fault will be indicated.
2293_20_OD and 2293_20_CM Air Bag Inflator Circuit Resistance Low - Loop No. 2, Front Driver Side When the RCM  measures less than the desired range between the driver air bag loop 2 circuits, a fault will be indicated.
2293_21_OD and 2293_21_CM Air Bag Circuit Open - Loop No. 2, Front Driver Side When the RCM  measures greater than the desired range between the driver air bag loop 2 circuits, a fault will be indicated.
2293_22_OD and 2293_22_CM Air Bag Circuit Short to Battery - Loop No. 2, Front Driver Side When the RCM  senses a short to voltage on either driver air bag loop 2 circuit, a fault will be indicated.
2293_23_OD and 2293_23_CM Air Bag Circuit Short to Ground - Loop No. 2, Front Driver Side When the RCM  senses a short to ground on either driver air bag loop 2 circuit, a fault will be indicated.
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 the desired range 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 the desired range 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 passenger air bag loop 1 circuit, 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 passenger air bag loop 1 circuit, 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 the desired range 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 the desired range 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 driver air bag loop 1 circuit, 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 driver air bag loop 1 circuit, a fault will be indicated.
(1) 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 indicate continuous memory status and are associated with continuous DTC B2293.

This pinpoint test is intended to diagnose the following: 

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