Diagnostic Test
- VERIFY ACTIVE DTC NOTE:
Make sure the battery is fully charged.
- Turn the ignition on.
- Using a scan tool, read ORC DTCs.
Does the scan tool display active B212C-13-IGNITION RUN/START INPUT - CIRCUIT OPEN DTC?
Yes
- Go To 2.
No
- Perform the RESTRAINTS SYSTEM INTERMITTENT TEST. Refer to Standard Procedure .
- CHECK FOR AN ACTIVE TIPM RUN/START DTC
- With the scan tool, read TIPM DTCs.
Does the scan tool display any active TIPM Run/Start circuit related DTCs?
Yes
- Refer to appropriate Electrical Diagnostic Information and perform the appropriate diagnostic procedure .
No
- Go To 3.
- With the scan tool, read TIPM DTCs.
- INSPECT THE TIPM M16 FUSE
- CHECK (F201) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT RESISTANCE
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.
- Measure the resistance of the (F201) Fused Ignition Run/Start Control Output circuit between TIPM M16 fuse terminal (output side) and ground.
Is the resistance below 100 Ohms?
Yes
- Go To 5.
No
- Using 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 the TIPM M16 fuse in accordance with the Service Information.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
- Measure the resistance of the (F201) Fused Ignition Run/Start Control Output circuit between TIPM M16 fuse terminal (output side) and ground.
- CHECK (F201) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT RESISTANCE WITH ORC DISCONNECTED
- Disconnect both ORC harness connectors.NOTE:
Check connectors - Clean and repair as necessary.
- Connect the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) to the ORC C2 harness connector.
- Measure the resistance of the (F201) Fused Ignition Run/Start Control Output circuit between the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) and ground.
Is the resistance below 100 Ohms?
Yes
- Replace the TIPM M16 fuse.
- Repair the (F201) Fused Ignition Run/Start Control Output circuit for a short to ground.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
No
- Replace the ORC in accordance with the Service Information.
- Replace the TIPM M16 fuse.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
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.
- Disconnect both ORC harness connectors.
- CHECK (F201) IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
- Turn the ignition on.
- Measure the voltage of the Ignition Run/Start Control Output circuit at the TIPM M16 fuse terminal (supply side).
Is the voltage above 6.0 volts?
Yes
- Go To 7.
No
- Repair the open Ignition Run/Start Control Output circuit.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
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.
- CHECK FOR ORC CIRCUIT OPEN
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.
- Reinstall the TIPM M16 Fuse.
- Disconnect both ORC harness connectors.NOTE:
Check connectors - Clean and repair as necessary.
- Install the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) to the ORC C2 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.
- Measure the voltage of the (F201) Fused Ignition Run/Start Control Output circuit between the appropriate terminal of the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) and ground.
Is the voltage above 6.0 volts?
Yes
- Replace the ORC in accordance with the Service Information.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
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.
No
- Go To 8.
- CHECK FOR OPEN (F201) FUSED IGNITION RUN START CONTROL OUTPUT CIRCUIT
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.
Disconnect the TIPM C6 harness connector.
NOTE:Check connectors - Clean and repair as necessary.
- Measure the resistance of the (F201) Fused Ignition Run/Start Control Output circuit between the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) cavity 16 and the TIPM C6 harness connector cavity 7.
Is the resistance below 5.0 Ohms?
Yes
- Turn the ignition OFF.
- Replace the TIPM in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST for 1500, 2500 & 3500, or BODY VERIFICATION TEST for 3500 CAB & CHASSIS, 4500 & 5500 .
No
- Repair the open (F201) Fused Ignition Run/Start Control Output circuit.
- Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to Standard Procedure .
- Measure the resistance of the (F201) Fused Ignition Run/Start Control Output circuit between the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) cavity 16 and the TIPM C6 harness connector cavity 7.