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.
  
  NOTE: Check the FCM for any active CAN C hardware DTCs, perform DTC before proceeding.
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.
(A919) FUSED B (+) CIRCUIT OPEN OR SHORTED

Fig 1: Checking Fused B (+) Circuit Open Or Shorted
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. Turn the ignition off.
  NOTE: Check IPM fuses before continuing.
2. Disconnect the PCM C1 harness connector.
  CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.
3. Using a 12-volt test light connected to ground, check the (A919) Fused B (+) circuit.
Q: Does the test light illuminate brightly?

Yes :
- Go To 3
No :
- Repair the (A919) Fused B (+) circuit for an open or short.
- Perform POWERTRAIN VERIFICATION TEST .
(Z913) (Z937) GROUND CIRCUIT OPEN

Fig 2: Checking Ground Circuit Open
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. Using a 12-volt test light connected to 12-volts, check each (Z913) and (Z937) ground circuit.
Q: Does the test light illuminate brightly for each circuit?

Yes :
- Go To 4
No :
- Repair the ground circuit for an open.
- Perform POWERTRAIN VERIFICATION TEST .
(F202) (F924) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN OR SHORTED

Fig 3: Checking Fused Ignition Switch Output Circuit Open Or Shorted
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. Turn the ignition on.
  NOTE: Check IPM fuses before continuing.
2. Using a 12-volt test light connected to ground, check each (F202) and (F924) Fused Ignition Switch Output circuit.
  NOTE: It may be necessary to turn the ignition to the start position for the (F924) circuit.
Q: Does the test light illuminate brightly for each circuit?

Yes :
- Go To 5
No :
- Repair the Fused Ignition Switch Output circuit for an open or short.
- Perform POWERTRAIN VERIFICATION TEST .
(D65) CAN C BUS (+) CIRCUIT OPEN

Fig 4: Checking CAN C Bus (+) Circuit Open
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. Turn the ignition off.
2. Disconnect the FCM C1 harness connector.
3. Measure the resistance of the (D65) CAN C Bus (+) circuit between the FCM connector and the appropriate terminal of the special tool #8815.
Q: Is the resistance below 5.0 ohms?

Yes :
- Go To 6
No :
- Repair the (D65) CAN C Bus (+) circuit for an open.
- Perform POWERTRAIN VERIFICATION TEST .
(D64) CAN C BUS (-) CIRCUIT OPEN

Fig 5: Checking CAN C Bus (-) Circuit Open
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
1. Measure the resistance of the (D64) CAN C Bus (-) circuit between the FCM connector and the appropriate terminal of the special tool #8815.
Q: Is the resistance below 5.0 ohms?

Yes :
- Replace and program the Powertrain Control Module in accordance with the service information.
- Perform POWERTRAIN VERIFICATION TEST .
No :
- Repair the (D64) CAN C Bus (-) circuit for an open.
- Perform POWERTRAIN VERIFICATION TEST .