INSPECTION PROCEDURE 1: No Communication Possible Between Scan Tool and All Systems.: Diagnosis

STEP 1. Measure the power supply voltage at data link connector C-14.
Measure the voltage between data link connector C-14 terminal 16 and ground.
- The measured voltage should equal battery positive voltage.
Q: Is the measured voltage equal to battery positive voltage?

YES: Go to Step 4.

NO: Go to Step 2.

Fig 1: Identifying C-14 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 2: Measuring Voltage Between Data Link Connector C-14 Terminal 16 And Ground
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 2. Check data link connector C-14, intermediate connector C-126, junction block connector C-212, C-214 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES: Go to Step 3.

NO: Repair or replace the damaged components. Refer to HARNESS CONNECTOR INSPECTION .

Fig 3: Identifying C-14 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 4: Identifying C-126 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 5: Identifying C-212 And C-214 Connectors Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 3. Check the harness for open circuit or short circuit to ground between data link connector C-14 terminal 16 and fusible link 1.
Q: Is the harness wire in good condition?

YES: It can be assumed that this malfunction is intermittent. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .

NO: Repair or replace the harness wire.

Fig 6: Identifying C-14 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 4. Measure the ground circuit for resistance at the data link connector C-14.
Measure the resistance between terminal 4, 5 and ground.
- The resistance should measure less than 2 ohms.
Q: Is the measured resistance less than 2 ohms?

YES: Replace the scan tool.

NO: Go to Step 5.

Fig 7: Identifying C-14 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Fig 8: Measuring Resistance Between Terminal 4, 5 And Ground
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 5. Check data link connector C-14 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are the connector and terminals in good condition?

YES: Go to Step 6.

NO: Repair or replace the harness wire.

Fig 9: Identifying C-14 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 6. Check the harness for open circuit between data link connector C-14 terminal 4, 5 and ground.
Q: Is the harness wire in good condition?

YES: It can be assumed that this malfunction is intermittent. Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS .

NO: Repair or replace the harness wire.

Fig 10: Identifying C-14 Connector Terminals
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.