B1B74

B1B74-LEFT SIDE SATELLITE ACCELERATION SENSOR 3 INTERNAL





For a complete wiring diagram, refer to the wiring information Electrical Diagrams.

Theory of Operation

Impact sensors perform their own self test using power supplied by the Occupant Restraint Controller (ORC) then communicates this status back to the module. The sensor communicates this internal failure message using the sensor signal circuit.

- When Monitored:
The impact sensor performs a self test for internal circuitry at power up during the initialization process, and continuously through the ignition cycle every 10 ms.

- Set Condition:
This DTC sets when the ORC receives notification of a self test failure within the impact sensor. Once set, this DTC is latched for the entire ignition cycle. When doing the next ignition cycle the DTC has to meet all the code setting criteria again in order to reset.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.

NOTE: Make sure the battery is fully charged.

1. Turn the ignition on.
2. Clear the fault with the scan tool.
3. With the scan tool, read ORC DTCs.

Does the scan tool display active B1B74-LEFT SIDE SATELLITE ACCELERATION SENSOR INTERNAL

Yes

- WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

- Replace the Left Side Impact Sensor 3.
- Perform RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. . Restraints System Intermittent Condition Test