B1C47 1ST Row Passanger Retractor Pretensioner Circuit Low

B1C47 code - With the ignition on, the Occupant Restraint Controller (ORC) monitors the resistance of the seat belt retractor tensioner circuits. The ORC has detected low resistance on the passanger seat belt retractor tensioner circuits.

Wiring B1C47 code

Possible causes B1C47 code:
- Passanger seat belt  retractor tensioner line 1 circuit shorted to ground
- Passanger seat belt retractor tensioner line 2 circuit shorted to ground
- Passanger seat belt retractor tensioner
- Occupant Restrain Controller (ORC)

Diagnostic test B1C47 code

Step 1. Determine active or stored DTC

Make sure the battery is fully charged.
With the scan tool read the active ORC DTC, select active or stored DTC.

Is the DTC active or stored?

ACTIVE, go to step 2.
STORED, go to step 4.

Step 2. Check for shorted passanger seat belt retractor tensioner

Turn the ignition off disconnect the 12 volt battery and wait two minutes before proceeding. Disconnect the passanger seat belt retractor tensioner connector.
Connect the SRS load tool kit 8443A and the SRS load tool jumper to the passanger seat belt retractor tensioner connector.
Turn the ignition on, then reconnect the 12 volt battery and wait two minutes before proceeding. With the scan tool, read the active ORC DTC.

Does the scan tool display B1C47 code?

Yes, go to step 3.
No, replace the passanger seat belt retractor tensioner. Perform the Airbag system verification.

Step 3. Check passanger seat belt retractor tensioner line 1 circuit and passanger seat belt retractor tensioner line 2 circuit for a short to ground

Turn the ignition off disconnect the 12 volt  battery and wait two minutes before proceeding. Disconnect the SRS load tool kit 8443A and jumper from the passanger seat belt retractor tensioner connector. Disconnect the ORC connectors. Connect the SRS load tool adaptor 8443-32-L to the ORC connectors.

Measure the resistance of the passanger seat belt retractor tensioner line 1 circuit between the passanger seat belt retractor pretensioner connector and ground.
Measure the resistance of the passanger seat belt retractor tensioner line 2 circuit between the passanger seat belt retractor tensioner connector and ground.

is the resistance below 10K Ohms on either circuit?

Yes, repair the passanger seat belt retractor tensioner circuits shorted to ground.
No, if the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Replace the ORC. Perform the Airbag system verification.

Step 4. Stored ORC DTC.

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