B218B

B218B-IGNITION RUN/START 1 CONTROL CIRCUIT OVERCURRENT







- When Monitored:
With the ignition on.

- Set Condition:
Over current condition detected on the (F200) Fused Ignition Switch Output (Run-Start) circuit.





1. CHECK FOR ACTIVE DTC
1. With the scan tool, record and erase DTCs.
2. Cycle the ignition switch from off to on, leaving the ignition off for a minimum of 30 seconds.
3. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. INSPECT THE TIPM AND ORC TERMINALS AND WIRE HARNESS FOR A CONDITION CAUSING HIGH CIRCUIT RESISTANCE





WARNING: To avoid possible serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

1. Disconnect the TIPM C7 harness connector.
2. Disconnect the ORC harness connector.
3. Inspect the connector terminal for signs of corrosion build up and damage.
4. Visually inspect the wiring harness for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.

Were any of the above conditions found?

Yes

- Repair as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (F200) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT FUNCTION




1. Connect the 8443-24 Load Tool ORC Adaptor to the ORC C2 connector.Connect one end of a jumper wire to the 8443-24 Load Tool ORC Adaptor, and connect the other end to a clean chassis ground.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to battery.

2. Using a 12 volt test light connected to 12 volts, probe the (F200) Fused Ignition Switch Output (Run-Start) Circuit in the TIPM C7 harness connector.

Does the test light illuminate brightly?

Yes

- Go To 4

No

- Repair the Fused Ignition Switch Output (Run-Start) Circuit for high resistance.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE OUTPUT FROM THE TIPM ON THE (F200) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT




1. Reconnect the TIPM C7 harness connector.
2. Turn the ignition on.
3. Using a 12 volt test light connected to ground, probe the (F200) Fused Ignition Switch Output (Run-Start) circuit in the 8443-24 Load Tool ORC Adaptor.

Does the test light illuminate brightly?

Yes

- Replace the ORC.
- Perform the ORC VERIFICATION TEST. Occupant Restraint Controller (ORC) Verification Test.

No

- Replace the TIPM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.