B012D-64
B012D-64-DRIVER DOOR PRESSURE SENSOR (SATELLITE) - SIGNAL PLAUSIBILITY FAILURE
For a complete wiring diagram, refer to the Wiring Information.
Theory of Operation
The driver door pressure sensor is mounted to the driver inner door panel behind the door trim panel. Restraints - Description. The impact sensors perform their own self test using power supplied by the Occupant Restraint Controller (ORC) then communicate this status back to the ORC with periodic updates. The repair of this fault condition involves verifying the integrity of the wiring between the ORC and the sensor. A short to voltage fault on the door pressure sensor wiring can cause a loss of comm side impact code to set and the possible replacement of a good side impact sensor. The door pressure sensor is hardwired to the side impact sensor which is hard wired to the ORC creating a daisy chain circuit. The short to battery fault in a loss of comm or internal circuit failure of the door pressure sensor can cause the side impact sensor on the same side to set a loss of comm code.
- When Monitored:
The Occupant Restraint Controller (ORC) continuously communicates with the Driver Door Pressure Sensor (Satellite) over the sensor signal circuit. The sensor communication and on board diagnostics are powered by the ORC signal.
- Set Condition:
This code will set, if the ORC and the Driver Door Pressure Sensor (Satellite) do not establish and maintain valid data communications. The DTC will become Active after the fault has set for a minimum of 100 milliseconds (ms). The DTC will go to Stored after the ORC to Driver Door (Pressure) Sensor communication fault has been removed or the suspect pressure sensor has been replaced. This fault will clear upon the next ignition cycle. The Multifunction Indicator Lamp (MIL) will set in the instrument cluster.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Restraints System Pre-Diagnostic Procedure.
1. VERIFY ACTIVE DTC
NOTE: Make sure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read the ORC DTCs.
Does the scan tool display active: B012D-64-DRIVER DOOR PRESSURE SENSOR (SATELLITE) - SIGNAL PLAUSIBILITY FAILURE IS ACTIVE?
Yes
- Go To 2
No
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Restraints System Intermittent Condition Test.
2. CHECK THE (R130), (R150) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS FOR A SHORT TO VOLTAGE
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 Left Side Impact Pressure Sensor harness connector.
2. Disconnect the ORC harness connector.
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.
3. Measure the voltage of the (R130) Left Side Impact Pressure Sensor Signal circuit and (R150) Left Side Impact Pressure Sensor Ground circuit at the Left Side Impact Pressure Sensor harness connector and ground.
Is there any voltage present?
Yes
- Repair the (R130), (R150) Left Side Impact Pressure Sensor circuits for a short to voltage.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Go To 3
3. CHECK THE (R130) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL 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 (R130) Left Side Impact Pressure Sensor Signal circuit between the Left Side Impact Pressure Sensor connector and ground.
Is the resistance below 20 Ohms?
Yes
- Repair the (R130) Left Side Impact Pressure Sensor Signal circuit for a short to ground.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Go To 4
4. CHECK THE (R130), (R150) LEFT SIDE IMPACT PRESSURE SENSOR CIRCUITS FOR A SHORT TOGETHER
1. Measure the resistance between the (R130) Left Side Impact Pressure Sensor Signal and (R150) Left Side Impact Pressure Sensor Ground circuits at the Left Side Impact Pressure Sensor connector.
Is the resistance below 20 Ohms?
Yes
- Repair the (R130), (R150) Left Side Impact Pressure Sensor circuits shorted together.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Go To 5
5. CHECK THE (R150) LEFT SIDE IMPACT PRESSURE SENSOR GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
NOTE: After disconnecting the ORC module and the ORC module body harness connector, check the ORC module body harness connector shorting bar pin location. The shorting bar pin location should be down and not visible through the larger center holes of the ORC module body harness connector.
1. Connect the SRS Load Tool Adapter 8443-25 to the ORC Module harness connector.
2. Measure the resistance of the (R150) Left Side Impact Pressure Sensor Ground circuit between the Left Side Impact Pressure Sensor connector terminal 2 and terminal C2 31 of the SRS Load Tool Adapter 8443-25.
Is the resistance below 1 Ohm?
Yes
- Go To 6
No
- Repair the (R150) Left Side Impact Pressure Sensor Ground circuit for an open or high resistance.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
6. CHECK THE (R130) LEFT SIDE IMPACT PRESSURE SENSOR SIGNAL CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (R130) Left Side Impact Pressure Sensor Signal circuit between the Left Side Impact Pressure Sensor harness connector terminal 1 and the C2 32 terminal of the SRS Load Tool Adapter 8443-25.
Is the resistance below 1 Ohm?
Yes
- Go To 7
No
- Repair the (R130) Left Side Impact Pressure Sensor Signal circuit for an open or high resistance.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
7. CHECK OPERATION OF THE LEFT SIDE IMPACT PRESSURE SENSOR
1. Replace the Left Side Impact Pressure Sensor. Impact Sensor - Removal.
2. Reconnect the vehicle body harness to the impact sensor.
3. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.
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.
4. Connect the scan tool to the Data Link Connector - use the most current software available.
5. Use the scan tool and erase the stored codes in all airbag system modules.
6. Turn the Ignition Off, and wait five seconds before turning the Ignition On.
7. Wait one minute, and read active codes and if there are none present read the stored codes.
Did the active: B012D-64-DRIVER DOOR PRESSURE SENSOR (SATELLITE) - SIGNAL PLAUSIBILITY FAILURE DTC return?
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 take the proper precautions can result in accidental airbag deployment. Failure to follow these instructions may result in possible serious or fatal injury.
- Replace the Occupant Restrain Controller (ORC). Occupant Restraint Controller - Removal.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.
No
- Repair is complete.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Restraints System Verification Test.