B1204
B1204-PASSENGER AIRBAG INDICATOR CIRCUIT LOW
For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.
- When Monitored:
With the ignition on.
- Set Condition:
If the Occupant Restraint Controller (ORC) cannot detect voltage on the (G104) Passenger Airbag Indicator Driver circuit.
1. VERIFY ACTIVE DTC
NOTE: Make sure the battery is fully charged.
1. Turn the ignition on.
2. Turn the Passenger Airbag ON/OFF Switch to the OFF position.
3. With the scan tool, read ORC DTC.
Does the scan tool display active B1204-PASSENGER AIRBAG INDICATOR DRIVER CIRCUIT LOW DTC?
Yes
- Go To 2
No
- Go To 6
2. VERIFY ACTIVE DTC
NOTE: Active B212C-IGNITION RUN/START INPUT CIRCUIT OPEN DTC must be repaired before continuing with this procedure.
Does the scan tool display active B212C-IGNITION RUN/START INPUT CIRCUIT OPEN DTC?
Yes
- Perform the B212C-IGNITION RUN/START INPUT CIRCUIT OPEN DTC. B212C.
No
- Go To 3
3. CHECK THE (G104) PASSENGER AIRBAG INDICATOR DRIVER CIRCUIT VOLTAGE AT THE ORC CONNECTOR
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 ORC harness connectors.
NOTE: Check connectors - Clean and repair as necessary.
2. Connect the SRS Load Tool Adapter 8443-25 to the ORC harness connectors.
WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.
3. Measure the voltage of the (G104) Passenger Airbag Indicator Driver circuit between the SRS Load Tool Adapter 8443-25 cavity 24-6 and ground.
Is the voltage above 6.0 volts?
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.
- 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 ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
No
- Go To 4
4. CHECK (F201) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT VOLTAGE AT THE PASSENGER AIRBAG ON/OFF SWITCH.
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 Passenger Airbag On/Off Switch harness connector.
NOTE: Check connectors - Clean and repair as necessary.
WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.
2. Measure the voltage of the (F201) Fused Ignition Switch Output (Run-Start) circuit between the Passenger Airbag On/Off Switch harness connector cavity 4 and ground.
Is the voltage above 6.0 volts?
Yes
- Go To 5
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.
- Repair the (F201) Fused Ignition Switch Output circuit for an open or high resistance.
- Perform the ORC VERIFICATION TEST Occupant Restraint Controller (ORC) Verification Test.
5. CHECK (G104) PASSENGER AIRBAG INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND
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. Measure the resistance of the (G104) Passenger Airbag Indicator Driver circuit between the SRS Load Tool Adapter 8443-25 cavity 24-6 and ground.
Is the resistance below 10 Ohms?
Yes
- Repair the (G104) Passenger Airbag Indicator Driver circuit for a short to ground.
- Perform the ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
No
- Replace the Passenger Airbag ON/OFF Switch.
- Perform the ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.
6. TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase all DTCs from the ORC.
2. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
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.
3. Using the wiring diagram/schematic as a guide, inspect the wiring and harness connectors.
4. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
5. The following additional checks may assist you in identifying a possible intermittent problem.
6. Reconnect any disconnected components and harness connector.
WARNING: Turn the ignition on, then reconnect the 12-volt battery. Failure to follow these instructions may result in possible serious or fatal injury.
7. With the scan tool, monitor active codes as you work through the following steps.
WARNING: Maintain a safe distance from all airbags while performing the following steps. Failure to follow these instructions may result in possible serious or fatal injury.
8. Wiggle the wiring harness and harness connectors of the related airbag circuit or component.
9. If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
10. If only stored codes return, continue the test until the problem area has been isolated.
11. 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 DTC?
Yes
- Perform the appropriate diagnostic procedure.Testing and Inspection
No
- No problem found at this time. Erase all codes before returning vehicle to customer.