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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test M: Lamp Fault Code (LFC) 24/25 DTC B2294 >> Normal Operation

Normal Operation

The Restraints Control Module (RCM) continuously monitors the driver and passenger Safety Canopy® module circuits (loop) 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 flash Lamp Fault Code (LFC) 24 or 25 on the air bag warning indicator. After the LFCs  are displayed, the air bag warning indicator will remain illuminated for the rest of the ignition cycle.

The RCM  monitors Safety Canopy® module circuits for resistance and expects a normal resistance between 1.50 and 3.04 ohms.

If loop resistance is between 1.04 and 1.50 ohms or between 3.04 and 3.72 ohms, there exists a strong potential for a fault to occur a DTC may or may not set. The RCM  will set a DTC if the loop resistance is less than 1.04 ohms or greater than 3.72 ohms.

FAULT DESCRIPTION

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 1.04 ohms between the passenger Safety Canopy® circuits for greater than 2.2 seconds, 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 3.72 ohms between the passenger Safety Canopy® circuits for greater than 2.2 seconds, a fault will be indicated.
2294_26_O 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 of the passenger Safety Canopy® circuits for greater than 2.2 seconds, 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 of the passenger Safety Canopy® circuits for greater than 2.2 seconds, 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 0.9 ohm between the driver Safety Canopy® circuits for greater than 2.2 seconds, 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 5 ohms between the driver Safety Canopy® circuits for greater than 2.2 seconds, 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 of the driver Safety Canopy® circuits for greater than 2.2 seconds, 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 of the driver Safety Canopy® circuits for greater than 2.2 seconds, 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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