Fault Symptoms

B2876 Side Airbag Sensor, Passenger. Faulty Communication

B2877 Side Airbag Sensor, Passenger. Data Line. Short to B+

B2878 Side Airbag Sensor, Passenger. Data Line. Short to Ground

Fault symptoms
Airbag warning lamp on.

Conditions
The following conditions are applicable to the respective diagnostic trouble codes:

B2876
- No communication between side impact sensor and control module.

B2877
- The voltage on the side impact sensor's communications lead is lower than 3 V for 1.25 s.

B2878
- The voltage on the side impact sensor's ground lead is higher than 6 V for 1.25 s.

Diagnostic help
Diagnostic trouble code B2876 will be generated if the side impact sensor is defective or if the sensor's communications lead (pin 1 on the side impact sensor, pin 44 on the control module) is short-circuited to battery positive (B+) or open-circuit (broken).