B218B

B218B-IGNITION RUN/START 1 CONTROL CIRCUIT OVERCURRENT

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.

POSSIBLE CAUSES
- Terminal damage or corrosion
- High resistance on the (F200) fused ignition switch output (run-start) circuit
- Occupant restraint controller (ORC)
- TIPM

Diagnostic Test

1. CHECK FOR ACTIVE DTC

With the scan tool, read the active DTC's.
Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.
With the scan tool, read the active DTC's.

Q: 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.




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

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

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

Q: Were any of the above conditions found?

YES: Repair as necessary. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3




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

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.

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.

Q: 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 - VER 1. Body Verification Test




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

Reconnect the TIPM C7 harness connector.
Turn the ignition on.
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.

Q: Does the test light illuminate brightly?

YES: Replace the ORC. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the TIPM. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test