Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
  NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, select System select.
  NOTE: If an ECU is grayed out, it is not communicating, indicating that the module is not active on the Bus network.
Q: Is the ECU grayed out?

Yes :
- Go To 2
No :
- The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
(Z104) GROUND CIRCUIT OPEN

Fig 1: Checking Ground Circuit Open
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

WARNING: TO avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
1. Disconnect the Occupant Restraint Controller Module harness connectors.
2. Connect the appropriate Load Tool ACM Adaptor to the ORC connector.
3. Using a 12-volt test light connected to 12-volts, check the (Z104) ground circuit.
Q: Does the test light illuminate brightly?

Yes :
- Go To 3
No :
- Repair the (Z104) ground circuit for an open.
- Perform SUPPLEMENTAL RESTRAINTS VERIFICATION TEST .
(F100) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT OPEN OR SHORTED

Fig 2: Checking Fused Ignition Switch Output (RUN) Circuit Open Or Shorted
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.
1. Using a 12-volt test light connected to ground, check the (F100) Fused Ignition Switch Output (RUN) circuit.
Q: Does the test light illuminate brightly?

Yes :
- Go To 4
No :
- Repair the (F100) Fused Ignition Switch Output (RUN) circuit for an open or short.
- Perform SUPPLEMENTAL RESTRAINTS VERIFICATION TEST .
(F201) FUSED IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT OPEN OR SHORTED

Fig 3: Checking Fused Ignition Switch Output (RUN/START) Circuit Open Or Shorted
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. Using a 12-volt test light connected to ground, check the (F201) Fused Ignition Switch Output (RUN/START) circuit.
Q: Does the test light illuminate brightly?

Yes :
- Go To 5
No :
- Repair the (F201) Fused Ignition Switch Output (RUN/START) circuit for an open or short.
- Perform SUPPLEMENTAL RESTRAINTS VERIFICATION TEST .
(D55) AND (D54) CAN B BUS CIRCUITS OPEN

Fig 4: Checking CAN B Bus Circuits Open
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

WARNING: If the Occupant Restraint Controller Module is dropped at any time, it must be replaced.
Failure to take the proper precautions could result in accidental airbag deployment and personal injury or death.

NOTE: One open circuit will not cause this condition.
1. Measure the voltage between the (D54) CAN B Bus (-) circuit and ground.
2. Measure the voltage between the (D55) CAN B Bus (+) circuit and ground.
Q: Is there any voltage present on either circuit?

Yes :
- Replace the Occupant Restraint Controller Module in accordance with the service information.
- Perform SUPPLEMENTAL RESTRAINTS VERIFICATION TEST .
No :
- Repair the (D55) and (D54) CAN B Bus circuits for an open. Inspect the connector for damage.
- Perform SUPPLEMENTAL RESTRAINTS VERIFICATION TEST .