B1C4F-1st ROW PASSENGER SEAT BELT BUCKLE TENSIONER CIRCUIT SHORTED TOGETHER

B1C4F-1st ROW PASSENGER SEAT BELT BUCKLE TENSIONER CIRCUIT SHORTED TOGETHER

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	8443A - SRS Load Tool Originally Shipped In Kit Number(s) 8443.
	8443-32-R - Adapter, SRS Adapter Originally Shipped In Kit Number(s) 8443.
	8443-32-L - Adapter, SRS Adapter Originally Shipped In Kit Number(s) 8443.

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 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 Kit

in the tests below substitutes a suspect squib with a known good component. The use of the SRS Load Tool Adapter tool provides a test point as well as a method for opening the shorting bar connections within the harness connector.

• When Monitored:

  The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 200 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 both circuits of the same squib are shorted together for more than 2.6 seconds. This DTC transitions from active to stored when the module sees a recovery from the shorted together condition for greater than 2.6 seconds.

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

1. DETERMINE ACTIVE OR STORED DTC

• Go To 2

• Perform the AIRBAG SYSTEM INTERMITTENT TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

2. CHECK FOR SHORTED PASSENGER SEAT BELT BUCKLE TENSIONER

• Go To 3

• 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 Buckle Tensioner in accordance with the Service Information.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
  

3. CHECK (R56) PASSENGER SEAT BELT TENSIONER LINE 1 CIRCUIT FOR A SHORT TO (R54) PASSENGER SEAT BELT TENSIONER LINE 2 CIRCUIT

• Repair the short between the (R56) Passenger Seat Belt Tensioner Line 1 circuit and the (R54) Passenger Seat Belt Tensioner Line 2 circuit in accordance with the Service Information.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).

• 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.

• Replace the ORC in accordance with Service Information.
• Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).