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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1110 (Supplemental Inflatable Restraint System) >> Diagnostic Tests >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Tests >> Pinpoint Test F: LFC 33/34/ DTC B2292 - Restraint System - Seatbelt Pretensioner Fault >> Normal Operation

Normal Operation

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The restraints control module (RCM) monitors safety belt buckle pretensioner circuits for faults. The RCM will set a DTC if a short to battery or short to ground fault is detected. The RCM will also set a DTC if the loop resistance is less than 1.04 ohms or greater than 3.72 ohms. The normal expected resistance range is 1.50 to 3.04 ohms. If a loop resistance is between 1.04 and 1.50 or between 3.04 and 3.72 ohms, a DTC may or may not set, yet there exists a strong potential for an intermittent fault. If the RCM detects one of the following faults on any of the safety belt buckle pretensioner circuits, it will store DTC B2292 in memory and send a message to the instrument cluster (IC) module to flash LFC 33 or 34 (or higher priority code if one exists) on the air bag warning indicator.

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
2292_24_OD and 2292_24_CM Pretensioner Circuit Short to Ground, Front Passenger Side When the RCM senses a short to ground on either of the passenger safety belt buckle pretensioner circuits, a fault will be indicated.
2292_25_OD and 2292_25_CM Pretensioner Circuit Short to Battery, Front Passenger Side When the RCM senses a short to voltage on either of the passenger safety belt buckle pretensioner circuits, a fault will be indicated.
2292_26_OD and 2292_26_CM Pretensioner Circuit Open, Front Passenger Side When the RCM measures greater than 3.72 ohms between the passenger safety belt buckle pretensioner circuits, a fault will be indicated.
2292_27_OD and 2292_27_CM Pretensioner Circuit Resistance Low, Front Passenger Side When the RCM measures less than 1.04 ohms between the passenger safety belt buckle pretensioner circuits, a fault will be indicated.
2292_28_OD and 2292_28_CM Pretensioner Circuit Short to Ground, Front Driver Side When the RCM senses a short to ground on either of the driver safety belt buckle pretensioner circuits, a fault will be indicated.
2292_29_OD and 2292_29_CM Pretensioner Circuit Short to Battery, Front Driver Side When the RCM senses a short to voltage on either of the driver safety belt buckle pretensioner circuits, a fault will be indicated.
2292_30_OD and 2292_30_CM Pretensioner Circuit Open, Front Driver Side When the RCM measures greater than 3.72 ohms between the driver safety belt buckle pretensioner circuits, a fault will be indicated.
2292_31_OD and 2292_31_CM Pretensioner Circuit Resistance Low, Front Driver Side When the RCM measures less than 1.04 ohms between the driver safety belt buckle pretensioner 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 B2292. Fault PIDs that end in CM indicate continuous memory status and are associated with continuous DTC B2292.

This pinpoint test is intended to diagnose the following:

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