B1C2A

B1C2A-LEFT SIDE SEAT THORAX SQUIB 1 SHORTED TOGETHER

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 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 (8443A) in the tests below substitutes a suspect squib with a known good component. The use of the (8443-28) 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 on.

- Set Condition:
This DTC sets when the ORC detects both circuits of the same squib are shorted together for more than 2.5 seconds. This DTC transitions from active to stored when the module sees a recovery from the shorted together condition for greater than 2.5 seconds.

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

1. DETERMINE ACTIVE OR STORED DIAGNOSTIC TROUBLE CODE (DTC)

NOTE: Make sure the battery is fully charged.

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

Is the DTC active or stored?

ORC - ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)

- Go To 2

ORC - STORED DTC

- and perform the RESTRAINTS SYSTEM INTERMITTENT TEST diagnostic procedure. Restraints System Intermittent Condition Test

2. CHECK FOR SHORTED SQUIB CIRCUITS IN LEFT SEAT AIRBAG

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 C313 in-line harness connector.

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

2. Connect the (8443A) to the C313 in-line harness connector.If the vehicle is equipped with the standard key ignition, follow this ignition on warning.

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.
If the vehicle is equipped with the keyless ignition, follow this ignition on warning.

WARNING: Disconnect the 12-volt battery wait two minutes before proceeding, remove the ORC fuses, connect the 12-volt battery, wait two minutes before proceeding. Cycle the ignition to the On position, then reconnect the ORC fuses. Wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

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

Does the scan tool display: B1C2A-LEFT SIDE SEAT THORAX SQUIB 1 SHORTED TOGETHER?

Yes

- Go To 3

No

- Go To 4

3. CHECK (R7) LEFT SEAT THORAX SQUIB 1 LINE 1 CIRCUIT FOR A SHORT TO (R5) LEFT SEAT THORAX SQUIB 1 LINE 2 CIRCUIT

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 (8443A) from the C313 in-line harness connector.
2. Reconnect the C313 in-line harness connector.
3. Disconnect the Left Seat Airbag harness connector.

WARNING: Do not place an intact non-deployed airbag face down on a hard surface, the airbag propels 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.

4. Connect the (8443A) and the (8443-1) to the Left Seat Airbag harness connector.If the vehicle is equipped with the standard key ignition, follow this ignition on warning.

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.
If the vehicle is equipped with the keyless ignition, follow this ignition on warning.

WARNING: Disconnect the 12-volt battery wait two minutes before proceeding, remove the ORC fuses, connect the 12-volt battery, wait two minutes before proceeding. Cycle the ignition to the On position, then reconnect the ORC fuses. Wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.

5. Using the scan tool, read the active ORC DTCs.

Does the scan tool display: B1C2A-LEFT SIDE SEAT THORAX SQUIB 1 SHORTED TOGETHER?

Yes

- 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 Seat Airbag Jumper Wire Harness.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.

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 Left Seat Airbag. Seat Air Bag - Removal.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.