LEMON Manuals: Even more car manuals for everyone
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 E: DTC B2292 >> 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 safety belt retractor pretensioner circuits for the following faults:

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: Safety Belt Retractor Pretensioner Diagnostic Chart
G06504672Courtesy of FORD MOTOR CO.
FAULT TRIGGER CONDITION CHART

Fault PIDs (1) Description Fault Trigger Condition
2292_24_OD and 2292_24_CM Pretensioner Circuit Short to Ground, Front Passenger Side When the Restraints Control Module (RCM) senses a short to ground on either passenger pretensioner circuit, 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 passenger pretensioner circuit, a fault will be indicated.
2292_26_OD and 2292_26_CM Pretensioner Circuit Open, Front Passenger Side When the RCM  measures greater than the desired range between the passenger 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 the desired range between the passenger 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 driver pretensioner circuit, 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 driver pretensioner circuit, a fault will be indicated.
2292_30_OD and 2292_30_CM Pretensioner Circuit Open, Front Driver Side When the RCM  measures greater than the desired range between the driver 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 the desired range between the driver pretensioner circuits, a fault will be indicated.
(1) 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: 

scientia non olet · About LEMON Manuals