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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 G: DTC B2294 >> 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 the driver/passenger Safety Canopy® circuits for the following faults:

If a fault is detected, the RCM  will store DTC B2294 in memory and send a message to the Instrument Cluster (IC) module to illuminate the air bag warning indicator. 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:

Fig 1: Driver/Passenger Safety Canopy® Module Diagnostic Chart
G06504672Courtesy of FORD MOTOR CO.
FAULT TRIGGER CONDITION CHART

Fault PIDs (1) Description Fault Trigger Condition
2294_24_OD and 2294_24_CM A - B or A - C Pillar Curtain Circuit Resistance Low, Passenger Side When the Restraints Control Module (RCM) measures less than the desired range between the passenger Safety Canopy® circuits, a fault will be indicated.
2294_25_OD and 2294_25_CM A - B or A - C Pillar Curtain Circuit Open, Passenger Side When the RCM  measures greater than the desired range between the passenger Safety Canopy® circuits, a fault will be indicated.
2294_26_OD and 2294_26_CM A - B or A - C Pillar Curtain Circuit Short to Ground, Passenger Side When the RCM  senses a short to ground on either passenger Safety Canopy® circuit, a fault will be indicated.
2294_27_OD and 2294_27_CM A - B or A - C Pillar Curtain Circuit Short to Battery, Passenger Side When the RCM  senses a short to voltage on either passenger Safety Canopy® circuit, a fault will be indicated.
2294_28_OD and 2294_28_CM A - B or A - C Pillar Curtain Circuit Resistance Low, Driver Side When the RCM  measures less than the desired range between the driver Safety Canopy® circuits, a fault will be indicated.
2294_29_OD and 2294_29_CM A - B or A - C Pillar Curtain Circuit Open, Driver Side When the RCM  measures greater than the desired range between the driver Safety Canopy® circuits, a fault will be indicated.
2294_30_OD and 2294_30_CM A - B or A - C Pillar Curtain Circuit Short to Ground, Driver Side When the RCM  senses a short to ground on either driver Safety Canopy® circuit, a fault will be indicated.
2294_31_OD and 2294_31_CM A - B or A - C Pillar Curtain Circuit Short to Battery, Driver Side When the RCM  senses a short to voltage on either driver Safety Canopy® 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 B2294. Fault PIDs that end in CM indicate continuous memory status and are associated with continuous DTC B2294.

This pinpoint test is intended to diagnose the following: 

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