For a complete wiring diagram Refer to Section 8W.When Monitored:With the ignition in the Run position.Set Condition:If voltage on the (F100) Fused Ignition Switch Output (RUN) circuit drops below 6.0 volts.Possible CausesTIPM FUSE 51 OPENTIPM FUSE 51 SUPPLY VOLTAGE LOW(F100) FUSED RUN RELAY OUTPUT CIRCUIT OPEN(F100) FUSED RUN RELAY OUTPUT CIRCUIT SHORT TO GROUNDOCCUPANT RESTRAINT CONTROLLER (ORC)1. VERIFY THAT DTC B212D-IGNITION RUN ONLY INPUT CIRCUIT OPEN IS ACTIVEEnsure the battery is fully charged.Turn the ignition on.Wait 10 seconds.With the scan tool, read Occupant Restraint Controller (ORC) and Occupant Classification Module (OCM) DTC.Does the scan tool display active: B212D-IGNITION RUN ONLY INPUT CIRCUIT OPEN?YesGo To 2NoGo To 82. INSPECT AIRBAG RUN CIRCUIT FUSETurn the ignition off.Remove the TIPM Fuse 51 and inspect the fuse.Check connectors - Clean and repair as necessary.Is the fuse open?YesGo To 3NoGo To 53. CHECK (F100) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT SHORT TO GROUNDMeasure the resistance of the (F100) Fused Run Relay Output (Run) circuit between the TIPM Fuse 51 (output side) terminal and ground.Is the resistance below 100.0 ohms?YesGo To4NoUsing the wiring diagram/schematic as a guide, inspect the related wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.Replace TIPM Fuse 51.Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. 4. CHECK (F100) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT RESISTANCE WITH ORC DISCONNECTEDIf 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.To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.Disconnect the ORC connectors.Check connectors - Clean and repair as necessary.Connect the Load Tool ORC 8443-32 Adapter to the ORC connectors.Measure the resistance of the (F100) Fused Run Relay Output (Run) circuit between 8443-32-L Adapter cavity C2-31 and ground.Is the resistance below 100.0 ohms?YesRepair the (F100) Fused Run Relay Output (Run) circuit for a short to ground.Replace the TIPM Fuse 51.Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. NoReplace the ORC in accordance with the Service Information.Replace the TIPM Fuse 27.Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. 5. CHECK TIPM FUSE 51 SUPPLY SIDE CIRCUIT VOLTAGETurn the ignition on.Measure the voltage of the TIPM Fuse 51 (supply side) of the fuse to ground.Is the voltage above 6.0 volts?YesGo To 6NoReplace the TIPM in accordance with the Service Information.Perform *BODY VERIFICATION TEST - VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE). 6. CHECK (F100) FUSED RUN RELAY OUTPUT (RUN) OUTPUT CIRCUIT FOR AN OPENTo avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.Reinstall the TIPM Fuse 51.Disconnect the ORC connectors.Check connectors - Clean and repair as necessary.Connect the Airbag Load Tool ORC 8443-32-L Adapter to the ORC harness connectors.To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.Measure the voltage of the (F100) Fused Run Relay Output (Run) circuit between the 8443-32-L Adaptor cavity C2-31 and ground.Is the voltage above 6.0 volts?YesReplace the ORC in accordance with the Service Information.Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. NoGo To 77. CHECK FUSE 51 OUTPUT TO CAVITY 38 OF THE TIPM C6 CONNECTORTo avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.Disconnect the TIPM C6 connector.Check connectors - Clean and repair as necessary.Measure the resistance of the (F100) Fused Run Relay Output (Run) circuit between cavity C2-31 of the 8443-32-L Adaptor and TIPM C6 cavity 38 connector.Is the resistance below 5.0 ohms?YesReplace the ORC in accordance with the Service Information.Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1. NoReplace the TIPM in accordance with the Service Information.Perform *BODY VERIFICATION TEST - VER 1 (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE). 8. TEST FOR INTERMITTENT CONDITIONWith the scan tool, record and erase all DTC from all Airbag modules.If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.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.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.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 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 DTC?YesSelect appropriate symptom from Symptom List.No No problem found. Erase all codes before returning vehicle to customer.