B1B72, B1B75 Left/Right Side Satellite Acceleration Sensor 1 Internal

B1B72, B1B75 code - The location of the left side impact sensor 1 is 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 ans software validity. If the scan tool shows this DTC has a stored history of setting then the left/right side impact sensor 1 is to be replaced.

Note:
description DTCs
- B1B72 Left Side Satellite Acceleration Sensor 1 Internal
- B1B75 Right Side Satellite Acceleration Sensor 1 Internal

B1B72, B1B75

When monitored this DTC with the ignition on, the right/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 right/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 right/left side impact sensor 1.

Possible causes B1B72, B1B75 code:
- Right/Left Impact sensor 1
- Occupant Restraint Controller (ORC)

Diagnostic test B1B72, B1B75 code

Step 1. Determine active or stored fault code

if the scan tool shows this DTC has a stored history of setting then the right/left side impact sensor is to be replaced.
Make sure the battery is fully charged.
Turn the ignition on.
With the scan tool, read ORC DTC.

Is the DTC B1B72/B1B75 RIGHT/LEFT SIDE SATELLITE ACCELERATOR SENSOR 1 INTERNAL DTC active or shows a setting history in stored?

Yes, 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. 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 step 2.

No, (did not set a active or stored DTC B1B72/B1B75 LEFT/RIGHT SIDE SATELLITE ACCELERATION SENSOR 1 INTERNAL) Go to step 3.

Step 2. Verfiy operation of the right/left side impact sensor

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 right/left side impact sensor 1.
Reconnect the vehicle wire harness to the sensor.
Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.

Turn the ignition on, the reconnect the 12 volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

Use the scan tool and erase the stored codes in all airbag modules.
Turn the ignition off, and wait 15 seconds turning the ignition on.
Wait one minute, and read active codes.

Did the active DTC B1B72/B1B75 LEFT/RIGHT SIDE SATELLITE ACCELERATOR SENSOR 1 INTERNAL DTC return?

Yes,
- Turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding.
- If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced.
Replace the Occupant Restraint Controller (ORC).

No, reapir is complete.

Step 3. Test for an intermittent condition

With the scan tool, record and erase all DTC from all airbag modules.
If any active codes are present they must be resolved before diagnosing any stored codes.

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.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.

Turn the ignition on, then reconnect the 12 volt battery and wait two minuts before proceeding.
With the scan tool, monitor active codes as you work through the following steps.
Maintain a safe distance from all airbags while performing the following steps. Filure to follow these instructions may result in possible serious or fatal injury.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the driver airbag circuits, rotate the steering wheel from stop to stop.
If only stored codes return continue the test until the problem area has been isolated.
In the previous steps you have attempted to recreate the conditions responsive for setting active DTC in question.

Are active  DTCs present or is the impact sensor showing stored DTC status?

Yes, if the scan tool shows this DTC has a stored history of setting then the left/right side impact sensor is to be replaced.
No, no problem found at this time. Erase all codes before returning vehicle to customer.

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