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B1B57






B1B57-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT SHORTED TOGETHER







- When Monitored:
With the ignition on and the Occupant Restraint Controller (ORC) ignition voltage above 6.6 volts, the ORC performs a series of passive and active current tests on the Passenger Seat Belt Switch circuits. The passive and active tests are repeated every 1.26 seconds.

- Set Condition:
If the ORC active tests identifies a high voltage condition in the Passenger Seat Belt Switch circuits the B1B55-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT SHORTED HIGH DTC will become active.

If the ORC passive tests identifies a high voltage condition in the Passenger Seat Belt Switch circuits the B1B57-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT SHORTED TOGETHER DTC will become active.

Both DTCs can be active at the same time and have the same possible causes.





1. VERIFY THAT DTC B1B57-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT SHORTED TOGETHER IS ACTIVE

NOTE: Ensure the battery is fully charged.

1. Turn the ignition on.
2. With the scan tool, read ORC DTCs.

Does the scan tool display active DTC: B1B57-1ST ROW PASSENGER SEAT BELT SENSOR CIRCUIT SHORTED TOGETHER?

Yes

- Go To 2

No

- Go To 6

2. CHECK FOR HIGH VOLTAGE ON THE PASSENGER HALL EFFECT CIRCUITS




1. Turn the ignition off.
2. Disconnect the Passenger Seat Belt Switch connector.

NOTE: Check connectors - Clean and repair as necessary.

3. Turn the ignition on.
4. Measure the voltage between the (R274) Passenger Hall Effect (+) circuit cavity 1 in the Passenger Seat Belt Connector and ground.
5. Measure the voltage between the (R272) Passenger Hall Effect (-) circuit between cavity 2 in the Passenger Seat Belt Connector and ground.

Is the voltage above 5 volts on either circuit?

Yes

- Go To 5

No

- Go To 3

3. CHECK FOR A ORC PASSENGER HALL EFFECT CIRCUITS SHORTED TOGETHER




1. Turn the ignition off.
2. Measure the resistance between the (R272) Passenger Hall Effect (-) circuit cavity 1 and (R274) Passenger Hall Effect (+) circuit cavity 2 in the Passenger Seat Belt Switch connector.

Is the resistance below 10.0 Ohms?

Yes

- Go To 4

No

- Replace the shorted Passenger Seat Belt Switch.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

4. CHECK FOR PASSENGER HALL EFFECT CIRCUITS SHORTED TOGETHER





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. Disconnect the both ORC connectors.

NOTE: Check connectors - Clean and repair as necessary.

2. Connect the 8443-24 Load Tool Adaptor to the ORC C1 connector.
3. Measure the resistance between the (R274) Passenger Hall Effect (+) circuit and (R272) Passenger Hall Effect (-) circuit in the Passenger Seat Belt Connector.

Is the resistance below 5.0 Ohms?

Yes

- Repair the open Passenger Hall Effect (-) circuit.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

No

- 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 ORC.
- Perform the ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.

5. CHECK FOR A PASSENGER HALL EFFECT CIRCUITS SHORTED HIGH





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. Disconnect the both ORC connectors.

NOTE: Check connectors - Clean and repair as necessary.

2. Connect the 8443-24 ORC Adaptor to the ORC C1 connector.
3. Measure the voltage of the (R274) Passenger Hall Effect (+) circuit from cavity 1 of the Passenger Seat Belt Connector to ground.
4. Measure the voltage of the (R272) Passenger Hall Effect (-) circuit from cavity 2 of the Passenger Seat Belt Connector to ground.

Is there any voltage on either circuit?

Repair

- Repair the shorted to battery (R274) Passenger Hall Effect (+) circuit or (R272) Passenger Hall Effect (-) circuit.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. Airbag System Verification Test.

No

- 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 ORC.
- Perform the ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test

6. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase all DTCs from all Airbag modules.
2. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

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.

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

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

7. With the scan tool, monitor active codes as you work through the following steps.

WARNING: Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.

8. Wiggle the wiring harness and connectors of the related airbag circuit or component.
9. If only stored codes return, continue the test until the problem area has been isolated.
10. In the previous steps you have attempted to recreate the conditions responsible for setting the active DTC in question.

Does the scan tool display any ACTIVE DTCs?

Yes

- Select the appropriate diagnostic procedure. Testing and Inspection.

No

- No problem found at this time. Erase all codes before returning vehicle to customer.

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