B1B70

B1B70-UP-FRONT LEFT SATELLITE ACCELERATION SENSOR INTERNAL





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

Theory of Operation

The impact sensors perform their own self test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. The repair of this fault condition involves verifying the integrity of the wiring between the ORC and the sensor.

- When Monitored:
With the ignition on, the Front Left Impact Sensor is equipped with on board diagnostics to monitor to sensor's internal circuits. If a problem is identified, the sensor sends the Front Left Impact Sensor Internal message to the Occupant Restraint Controller (ORC).

- Set Condition:
This DTC will set if the ORC receives an internal DTC from the Front Left Impact Sensor.





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

1. DETERMINE ACTIVE OR STORED FAULT CODE

WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury

NOTE: Ensure the battery is fully charged.

1. Turn the ignition on.
2. With the scan tool, read Occupant Restraint Controller (ORC) DTCs.

Does the scan tool display active: B1B70-UP-FRONT LEFT SATELLITE ACCELERATION SENSOR INTERNAL DTC?

Yes

- Go To 2

No

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

2. VERIFY OPERATION OF THE FRONT LEFT IMPACT SENSOR

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.

1. Replace the Front Left Impact Sensor.
2. Reconnect the vehicle wire harness connector to the sensor.
3. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.

WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.

4. Use the scan tool and erase the stored codes in all airbag system modules.
5. Turn the Ignition off, and wait 15 seconds before turning the Ignition on.
6. Wait one minute.
7. With the scan tool, read Occupant Restraint Controller (ORC) DTCs.

Did the active: B1B70-UP-FRONT LEFT SATELLITE ACCELERATION SENSOR INTERNAL DTC return?

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.

- WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.

- Replace the Occupant Restraint Controller.
- Perform the RESTRAINT SYSTEM VERIFICATION TEST procedure Restraints System Verification Test.

No

- Repair is complete.
- Perform the RESTRAINT SYSTEM VERIFICATION TEST procedure Restraints System Verification Test.