Pinpoint Test 6: DTC B2292 - Restraint System Safety Belt Pretensioner Fault
PINPOINT TEST 6: DTC B2292 - RESTRAINT SYSTEM SAFETY BELT PRETENSIONER FAULTNormal Operation
The restraints control module (RCM) monitors safety belt buckle pretensioner circuits for faults. The RCM sets a DTC if a short to battery or short to ground fault is detected. The RCM also sets a DTC if the loop resistance is less than 0.9 ohm or greater than 5.0 ohms. The normal expected resistance range is 1.31 to 4.29 ohms. If a loop resistance is between 0.9 and 1.31 ohms or between 4.29 and 5.0 ohms, 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 module to illuminate the air bag warning indicator.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Safety belt buckle pretensioner
- RCM
WARNING:
- Remove restraint system diagnostic tools from the vehicle prior to road testing. If tools are not removed, the supplemental restraint system (SRS) device may not deploy in a crash. Failure to follow this instruction may result in serious personal injury or death in a crash and possibly violate vehicle safety standards.
- Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which increases the risk of serious personal injury or death.
CAUTION: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE:
- The SRS must be fully operational and free of faults before releasing the vehicle to the customer.
- Supplemental restraint system (SRS) components should only be disconnected or reconnected when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS.
- Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
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