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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Supplemental Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test M: LFC 42, 43 and 44/DTC B2296 - Restraint System - Impact Sensor Fault >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The impact sensor(s) provide data to the restraints control module (RCM) for use in calculating impact severity. This is accomplished using various electrical and electro-mechanical sensor(s) throughout the vehicle.

The RCM continuously monitors all of the impact sensor circuits. If the RCM detects one of the following faults on any of the impact sensor circuits, it will store DTC B2296 in memory and flash either lamp fault code (LFC) 42, 43 or 44 depending on the fault on the air bag warning indicator.

Fault PIDsa Description Fault Trigger Condition
2296_18_OD and 2296_18_CM Driver/Center Front Crash Sensor Internal Fault When the restraints control module (RCM) senses a internal failure with the driver/center front impact sensor, a fault will be indicated.
2296_19_OD and 2296_19_CM Driver/Center Front Crash Sensor Mount/Communication Fault When the RCM is unable to communicate with the driver/center front impact sensor, a fault will be indicated.
2296_28_OD and 2296_28_CM Side Crash Sensor Internal Fault, Front Passenger Side When the RCM senses an internal failure with the passenger side first row impact sensor, a fault will be indicated.
2296_29_OD and 2296_29_CM Side Crash Sensor Mount or Communication Fault, Front Passenger Side When the RCM is unable to communicate with the passenger side first row impact sensor, a fault will be indicated.
2296_30_OD and 2296_30_CM Side Crash Sensor Internal Fault, Front Driver Side When the RCM senses an internal failure with the driver/center front impact sensor, a fault will be indicated.
2296_31_OD and 2296_31_CM Side Crash Sensor Mount or Communication Fault, Front Driver Side When the RCM is unable to communicate with the driver side first row impact sensor, a fault will be indicated.

a Fault PIDs that end in OD indicate an on-demand status and are associated with on-demand DTC B2296. Fault PIDs that end in CM indicate continuous memory status and are associated with continuous DTC B2296.

This pinpoint test is intended to diagnose the following:

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