B1884
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PINPOINT TEST 2: DTC B1884 - PASSENGER AIR BAG DEACTIVATION WARNING LAMP CIRCUIT FAILURE
Normal Operation
When the ignition is in the ON position, the passenger air bag deactivation (PAD) indicator prove-out period is initiated by the restraints control module (RCM). The RCM briefly activates the PAD indicator (prove-out) to verify to the occupants correct functional operation of the PAD indicator. See Passenger Air Bag Module Removal/Installation.
During the PAD prove-out period, if the RCM detects an open (indicator does not illuminate) or short to ground (indicator illuminated continuously) on the PAD indicator circuit, it will store DTC B1884 in memory and send a message to the instrument cluster module to illuminate the air bag warning indicator.
- DTC B1884 (Passenger Airbag Deactivation Warning Lamp Circuit Failure) - Sets if the RCM detects an open circuit or short to ground on the PAD indicator circuit.
Possible Causes
- Wiring, terminals or connectors
- PAD indicator
- RCM
Diagnostic Procedure
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.
CAUTION: Use the correct probe adapter(s) when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.
NOTE: The supplemental restraint system (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
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