IPM-ORC #1 (F100 Circuit) Output Short To Ground
IPM-ORC #1 (F100 CIRCUIT) OUTPUT SHORT TO GROUND
For a complete wiring diagram Consult Diagrams/Electrical.
- When Monitored:
With the ignition in the Run position.
- Set Condition:
If voltage on the (F100) Fused Run Relay Output circuit drops below 6.50 ± 0.25 volts.
Diagnostic Test
1. VERIFY ACTIVE DTC
NOTE: Ensure the battery is fully charged.
Turn the ignition on.
With the scan tool, read IPM DTCs.
Does the scan tool display active: IPM-ORC #1 (F100 CIRCUIT) OUTPUT SHORT TO GROUND?
Yes
- Go To 2
No
- Go To 4
2. CHECK (F100) ORC RUN DRIVER CIRCUIT FOR AN OPEN
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the ORC connectors.
NOTE: Check connectors - Clean and repair as necessary.
Connect the Airbag Load Tool ORC 8443-24 Adaptor to the ORC C2 harness connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
Measure the voltage of the (F100) ORC Run Driver circuit between the ORC 8443-24 Adaptor cavity 24 and ground.
Is the voltage above 6.5 ± 0.25 volts?
Yes
WARNING: If the Occupant Restraint Controller is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and serious or fatal injury.
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
- Replace the ORC.
- Perform *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
No
- Go To 3
3. CHECKING THE F100 CIRCUIT FOR A SHORT TO GROUND
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the IPM C4 connectors.
NOTE: Check connectors - Clean and repair as necessary.
Measure the resistance of the (F100) ORC Run Driver circuit between 8443-24 Adaptor cavity 24 and ground.
Is the resistance below 100.0 ohms?
Yes
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
- Repair the (F100) ORC Run Driver circuit for a short to ground.
- Perform *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
No
- Replace the IPM.
- 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 serious or fatal injury, 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 serious or fatal injury, 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 serious or fatal injury, 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
- Diagnose and repair the DTC(s).
No
- No problem found Erase all codes before returning vehicle to customer.