B12E0

B12E0 - DRIVER KNEE BLOCKER AIRBAG SHORT TO GROUND





- When Monitored: Ignition on. The Occupant Restraint Controller (ORC) monitors the resistance of the Driver Knee Blocker Airbag Squib Circuits.

- Set Condition: The Occupant Restraint Controller (ORC) has detected low resistance in the Driver Knee Blocker Airbag Squib Circuits.





For a complete Restraints System Circuit Diagram. refer to Diagrams/Electrical.

Diagnostic Test

1. VERIFY THAT DTC B12E0-DRIVER KNEE BLOCKER AIRBAG SHORT TO GROUND IS ACTIVE

NOTE: Ensure the battery is fully charged.

NOTE: A scan tool is required to perform the following test.

NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.

Turn the ignition on.

With the scan tool, read ORC DTCs.

Does the scan tool display active: B12E0-DRIVER KNEE BLOCKER AIRBAG INDICATOR CIRCUIT LOW?

Yes

- Go To 2

No

- Go To 5

2. WITH THE SCAN TOOL, READ ACTIVE DTCs

WARNING: Turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Disconnect the Driver Seat Belt Tensioner connector.

NOTE: Check connectors - Clean/repair as necessary.

Connect the appropriate Load Tool to the Driver Seat Belt Tensioner Squib connector.

WARNING: Turn the ignition on, then reconnect the battery.

With the scan , read the active DTCs.

Does the scan tool display an active Driver Seat Belt Tensioner Squib DTC?

Yes

- Go to 3

No

- Replace the Driver Seat Belt Tensioner.
- Perform AIRBAG VERIFICATION TEST. Airbag System Verification Test

3. CHECK THE DRIVER KNEE BLOCKER AIRBAG SQUIB LINE 1 CIRCUIT FOR A SHORT TO GROUND





WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

NOTE: Check connectors - Clean and repair as necessary.

Measure the resistance of the Driver Knee Blocker Airbag Indicator squib line 1 circuit and ground.

Is the resistance below 10K ohms?

Yes

- Repair the Driver Knee Blocker Squib Line 1 circuit.
- Perform AIRBAG VERIFICATION TEST. Airbag System Verification Test

No

- Go To 4

4. CHECK THE DRIVER KNEE BLOCKER AIRBAG SQUIB LINE 2 CIRCUIT FOR A SHORT TO GROUND





With the ignition off.

Measure the resistance of the Driver Knee Blocker Airbag squib line 2 circuit and ground.

Is the resistance below 10k ohms?

Yes

- Repair the Driver Knee Blocker Squib Line 2 circuit.
- Perform AIRBAG VERIFICATION TEST. Airbag System Verification Test

No

- Replace the Occupant Restraint Controller.
- Perform AIRBAG VERIFICATION TEST. Airbag System Verification Test

5. TEST FOR INTERMITTENT CONDITION

With the scan tool, record and erase all DTCs from all Airbag modules.

If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.

WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.

Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.

The following additional checks may assist you in identifying a possible intermittent problem.

Reconnect any disconnected components and harness connector.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.

With the scan tool, monitor active codes as you work through the following steps.

WARNING: To avoid personal injury or death, maintain a safe distance from all airbags while performing the following steps.

Wiggle the wiring harness and connectors of the related airbag circuit or component.

If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.

If only stored codes return, continue the test until the problem area has been isolated.

In the previous steps you have attempted to recreate the conditions responsible for setting the active DTC in question.

Does the scan tool display any ACTIVE DTCs?

Yes

- Select the appropriate diagnostic procedure.

No

- No problem found at this time. Erase all codes before returning vehicle to customer.