B1204
B1204-PASSENGER AIRBAG INDICATOR CIRCUIT LOWB1204-Passenger Airbag Indicator Circuit Low:
WHEN MONITORED
With the ignition on.
SET CONDITION
If the Occupant Restraint Controller (ORC) cannot detect voltage on the (R104) Passenger Airbag Indicator Driver circuit.
POSSIBLE CAUSES
- (R104) passenger airbag indicator driver circuit shorted to ground
- Passenger airbag on/off indicator lamp
- Occupant restraint controller(ORC)
Diagnostic Test
1. VERIFY THAT DTC B1204 PASSENGER AIRBAG INDICATOR CIRCUIT LOW IS ACTIVE
NOTE:
- Ensure the battery is fully charged.
- 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 Occupant Restraint Controller (ORC) DTCs.
Q: Does the scan tool display active: B1204 PASSENGER AIRBAG INDICATOR CIRCUIT LOW?
YES: Go To 2
NO: Go To 4
2. CHECK FOR ACTIVE DTC B1204 PASSENGER AIRBAG INDICATOR CIRCUIT LOW WITH PASSENGER AIRBAG ON/OFF INDICATOR LAMP DISCONNECTED
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Passenger Airbag On/Off Indicator Lamp connector.
NOTE: Check connectors - Clean and repair as necessary.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
With the scan tool, erase ORC DTCs.
Turn the ignition off, wait 10 seconds, and then turn the ignition on.
With the scan tool, read ORC DTCs.
Q: Does the scan tool display active: B1204 PASSENGER AIRBAG INDICATOR CIRCUIT LOW?
YES: Go To 3
NO: Replace the Passenger Airbag On/Off Indicator Lamp in accordance with the Service Information. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
3. CHECK (R104) PASSENGER AIRBAG INDICATOR DRIVER CIRCUIT FOR A SHORT TO GROUND
WARNING:
- IF THE OCCUPANT RESTRAINT CONTROLLER IS DROPPED AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND PERSONAL INJURY OR DEATH.
- TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the ORC C2 connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ORC Adaptor to the ORC connector.
Measure the resistance of the (R104) Passenger Airbag Indicator Driver circuit between ground and the ORC Adaptor.
Q: Is the resistance below 100.0 ohms?
YES: Repair the (R104) Passenger Airbag Indicator Driver circuit for a short to ground. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
NO: Replace the ORC in accordance with the Service Information. Perform ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
4. 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 chaffed, 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.
Q: Does the scan tool display any ACTIVE DTCs?
YES: Select appropriate symptom from Symptom List.
NO: No problem found at this time. Erase all codes before returning vehicle to customer.