B1C3A - Driver Retractor Tensioner Circuit Open: Notes

Fig 1: Driver Retractor Tensioner Circuit Shorted Together

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

For wiring diagram information, refer to appropriate SYSTEM WIRING DIAGRAMS article.

Theory of Operation

When powered, the occupant restraint controller 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 load tool in the tests below substitutes a suspect squib with a known good component. The use of jumpers and the ORC connector 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 500 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 an open on the squib circuit for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from an open condition for greater than 2.5 seconds.

Always perform the Pre - Diagnostic Troubleshooting procedure before proceeding.