B2746

B2746-LEFT SIDE SATELLITE PRESSURE SENSOR 4 INTERNAL

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

Theory of Operation

The number 4 side impact sensors (pressure sensors) are located in the driver and passenger doors. 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.

- When Monitored:
The impact (pressure) 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 (pressure) sensor. Once set, this DTC is latched for the entire ignition cycle or until the clear faults command is used by the scan tool, depending on the specific condition that sets the DTC.





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

1. CHECK FOR OTHER SENSOR INTERNAL DTCS

NOTE: Make sure the battery is fully charged.

1. Turn the ignition on.
2. Using the scan tool clear the faults.
3. With the scan tool, read ORC DTCs.

Are there any other Sensor Internal DTCs present?

Yes

- 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.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

- Go To 2

2. REPLACE THE LEFT SIDE IMPACT (PRESSURE) SENSOR 4

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 (Pressure) Sensor 4. Impact Sensor - Removal.
2. Reconnect the vehicle body harness to the impact (pressure) sensor.
3. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.If equipped with the standard key ignition, use this ignition on warning.

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.
If equipped with the keyless ignition, use this ignition on warning.

WARNING: Disconnect the 12-volt battery wait two minutes before proceeding, remove the ORC fuses, connect the 12-volt battery, wait two minutes before proceeding. Cycle the ignition to the On position, then reconnect the ORC fuses. Wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

4. Connect the scan tool to the Data Link Connector - use the most current software available.
5. Use the scan tool and erase the stored codes in all airbag system modules.

NOTE: The ORC Reset Function must be performed after the repair to force the module to retest for this DTC.

6. Perform ORC module reset. Access the Miscellaneous Function menu from the ORC ECU Overview screen on the scan tool to perform this operation.
7. Wait one minute, and read active codes.

Did the active B2746-LEFT SIDE SATELLITE PRESSURE SENSOR 4 INTERNAL DTC return?

Yes

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

- 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 Occupant Restrain Controller (ORC). Occupant Restraint Controller - Removal.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

No

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