B1B72

B1B72-LEFT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL







Theory of Operation

The left side impact sensor 1 is located in the B-pillar just past the first row seating. Impact sensors perform their own self test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the module. The repair of this fault centers on verifying the integrity of the sensor's internal circuitry and software validity. If the scan tool shows this DTC has a Stored history of setting then the left side impact sensor 1 is to be replaced.

- When Monitored:
With the ignition on, the Left Side Impact Sensor 1 is equipped with on board diagnostics to monitor to sensor's internal circuits. If a problem is identified, the sensor sends the Left Side Impact Sensor 1 Internal message to the Occupant Restraint Controller (ORC).

- Set Condition:
This DTC will set if the ORC receives an internal DTC from the Left Side Impact Sensor 1.





1.

NOTE: If the scan tool shows this DTC has a Stored history of setting then the left side impact sensor is to be replaced.
DETERMINE ACTIVE OR STORED FAULT CODE
1. Turn the ignition on.
2. With the scan tool, read the active ORC DTCs.

NOTE: Make sure the battery is fully charged.

IS the DTC: B1B72-LEFT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL active or shows a setting history in Stored?

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.

- NOTE: Inspect the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.

- Go To 2

No (Did not set a active or stored DTC B1B72-UP-LEFT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL)

- Perform the AIRBAG SYSTEM INTERMITTENT TEST. Initial Inspection and Diagnostic Overview.

2. VERIFY OPERATION OF THE LEFT SIDE IMPACT SENSOR 1

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 Left Side Impact Sensor 1.
2. Reconnect the vehicle wire harness 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 and wait two minutes before proceeding. 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. With the scan tool, read the active ORC DTCs.

Did the active DTC: B1B72-LEFT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL return?

Yes

- Go To 3

No

- Repair is complete.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

3. REPLACE THE OCCUPANT RESTRAINT CONTROLLER

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.

If all possible causes are done. View repair.

Repair

- Replace the Occupant Restraint Controller.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.