B007E-13
B007E-13-DRIVER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL - CIRCUIT OPEN
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 wiring. These circuits are maintained in a "floating" configuration at the ORC (connected to neither power nor ground) as protection against inadvertent deployment. Use of the Supplemental Restraints System (SRS) Load Tool Kit 8443A in the tests below substitutes a suspect squib with a known good component. The SRS Load Tool Adapter provides a test point as well as a method for opening the shorting bar connections within the ORC harness connector.
- When Monitored:
The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 100 ms thereafter while the ignition is on. The ORC then monitors the data return wire to determine the state of the circuit.
- Set Condition:
This Diagnostic Trouble Code (DTC) sets when the ORC detects an open on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the ORC sees a recovery from an open condition for greater than 2.5 seconds.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.
1. VERIFY ACTIVE DTC
NOTE: Make sure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read ORC DTCs.
Does the scan tool display active B007E-13-DRIVER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL - CIRCUIT OPEN DTC?
Yes
- Go To 2
No
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Restraints System Intermittent Condition Test.
2. CHECK DRIVER SEAT BELT RETRACTOR TENSIONER OPEN
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 Driver Seat Belt Retractor Tensioner harness connector.
NOTE: Check connectors - Clean and repair as necessary.
2. Connect the SRS Load Tool Kit 8443A and the SRS Load Tool Jumper 8443-8 to the Driver Seat Belt Retractor Tensioner harness connector.
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 ORC DTCs.
Does the scan tool display B007E-13-DRIVER SEATBELT RETRACTOR PRETENSIONER DEPLOYMENT CONTROL - CIRCUIT OPEN DTC ?
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 Driver Seat Belt Retractor Tensioner.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
3. CHECK (R53, R55) DRIVER SEAT BELT RETRACTOR TENSIONER CIRCUITS FOR AN OPEN
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 Kit 8443A and Jumper from the Driver Seat Belt Retractor Tensioner harness connector.
2. Disconnect the ORC harness connectors.
NOTE: Check connectors - Clean and repair as necessary.
3. Connect the SRS Load Tool Adapter 8443-24 Adaptor to the ORC C1 harness connector.
4. Measure the resistance of the (R55) Driver Seat Belt Retractor Tensioner Line 1 circuit between the Driver Seat Belt Retractor Tensioner harness connector cavity 2 and the SRS Load Tool Adapter 8443-24 cavity 1.
5. Measure the resistance of the (R53) Driver Seat Belt Retractor Tensioner Line 2 circuit between the Driver Seat Belt Retractor Tensioner harness connector cavity 1 and the SRS Load Tool Adapter 8443-24 cavity 2.
Is the resistance below 1.0 Ohms?
Yes
- 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 RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Repair the (R53, R55) Driver Seat Belt Retractor Tensioner circuits for an open or high resistance.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.