Pinpoint Test 22: DTC C1981 - Front Driver's Seat Track Position Switch Circuit Fault
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PINPOINT TEST 22: DTC C1981 - FRONT DRIVER'S SEAT TRACK POSITION SWITCH CIRCUIT FAULT
Normal Operation
The restraints control module (RCM) monitors the driver seat track position sensor circuits. If the RCM detects a short to battery, it will store DTC C1981 in memory and send a message to the instrument cluster module to illuminate the air bag warning indicator.
- DTC C1981 (Front Driver's Seat Track Position Switch Circuit Fault) - Set if the RCM detects an open or short to battery on the driver seat track position sensor circuit.
Possible Causes
- Wiring, terminals or connectors
- RCM
Diagnostic Procedure
WARNING: Always wear eye protection when servicing a vehicle. Failure to follow this instruction may result in serious personal injury.
WARNING: Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the safety canopy and cause serious personal injury or death.
WARNING: Never probe the electrical connectors on air bag, safety canopy or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
WARNING: 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 supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
NOTE: 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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