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B007F-12






B007F-12-PASSENGER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL-CIRCUIT SHORT TO BATTERY

Special Tools:






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





Theory of Operation

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and the wiring. These circuits are maintained in a "floating" configuration at the module, (connected to neither power nor ground), as protection against inadvertent deployment. Use of the SRS Load Tool in the tests below, substitutes a suspect squib with a known good component. (8443A)The use of the SRS Load Tool Adapter provides a test point, as well as a method for opening the shorting bar connections within the harness connector. (8443-57)

- When Monitored:
Voltage must be in the normal range and the squib is configured for the ORC to test the circuit. The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 400 ms thereafter while the ignition is in on. The module then monitors the return wire to determine the state of the circuit.

- Set Condition:
This DTC sets when the ORC detects a short to voltage on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from a short to voltage for greater than 2.5 seconds. The stored condition will be cleared if the condition does not return within 100 key cycles.





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

Diagnostic Test

1. DETERMINE ACTIVE OR STORED DTC

NOTE: Make sure the battery is fully charged.

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

Is the DTC active or stored?

ACTIVE DTC

- Go To 2

STORED DTC

- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Restraint System Intermittent Condition Test.

2. CHECK FOR SHORTED PASSENGER SEAT BELT RETRACTOR TENSIONER

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 Passenger Seat Belt Retractor Tensioner connector.

WARNING:
Do not place an intact undeployed airbag face down on a hard surface, the airbag will propel into the air if accidentally deployed. Failure to follow these instructions may result in possible serious or fatal injury.

NOTE: Check the connectors - Clean and repair as necessary.

2. Connect the SRS Load Tool and SRS Load Jumper to the Passenger Seat Belt Retractor Tensioner connector. (8443A) (8443-8)

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.

3. With the scan tool, read the active ORC DTCs.

Does the scan tool display: B007F-12-PASSENGER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL-CIRCUIT SHORT TO BATTERY?

Yes

- Go To 3

No

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 Passenger Seat Belt Tensioner.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraint System Verification Test.

3. CHECK (R506) PASSENGER SEAT BELT RETRACTOR TENSIONER LINE 1 CIRCUIT AND (R504) PASSENGER SEAT BELT RETRACTOR TENSIONER LINE 2 CIRCUIT FOR A SHORT TO BATTERY

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 SRS Load Tool and SRS Load Jumper. (8443A) (8443-8)
2. Disconnect the ORC C1 and C2 connectors.

NOTE: Check the connectors - Clean and repair as necessary.

3. Connect the SRS Load Tool Adapter to the ORC C1 and C2 connectors. (8443-57)

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. Measure the voltage of the (R506) Passenger Seat Belt Retractor Tensioner Line 1 circuit between the SRS Load Tool Adapter C1B-7 and ground.
5. Measure the voltage of the (R504) Passenger Seat Belt Retractor Tensioner Line 2 circuit between the SRS Load Tool Adapter C1B-8 and ground. (8443-57)

Is there any voltage present on either circuit?

Yes

- Repair or replace the Passenger Seat Belt Retractor Tensioner circuits with voltage present for a short to voltage.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraint System Verification Test.

No

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 ORC.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraint System Verification Test.

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