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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1401 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag And Safety Belt PRETENSIONER Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test G: DTC B2294 - Restraint System - Curtain Fault >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The restraints control module (RCM) continuously monitors the driver and passenger safety canopy module circuits (loop) for an acceptable resistance range, unacceptable voltage and shorts to ground. The RCM will set on-demand and store DTC B2294 in memory if any of these conditions are detected to be outside of their respectful range. If the RCM detects a fault, it will send a message to the instrument cluster module to illuminate the air bag warning indicator.

As the RCM continuously monitors safety canopy module circuits for resistance, it expects a normal resistance between 1.31 to 4.29 ohms.

If a loop resistance is between 0.9 and 1.31 or between 4.29 and 5 ohms, there exists a strong potential for an intermittent fault, a DTC may or may not set. The RCM will also set an on-demand DTC if the loop resistance is less than 0.9 ohm or greater than 5 ohms.

NOTE: When monitoring fault and/or resistance PIDs with the scan tool, it may take up to 2 seconds for the scan tool display to update.
Fault PIDsa 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 RCM measures resistance less than 0.9 ohm 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 resistance greater than 5 ohms 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 of the passenger safety canopy circuits, 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, 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 resistance less than 0.9 ohm 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 resistance greater than 5 ohms 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 of the driver safety canopy circuits, 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, a fault will be indicated.

a 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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