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Home >> Mitsubishi >> 2011 >> Endeavor AWD V6-3.8L (6G75) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Inspection Procedure 26
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Inspection Procedure 26




INSPECTION PROCEDURE 26: Fans (radiator fan, A/C condenser fan) are inoperative














CIRCUIT OPERATION

- The PCM sends a duty signal to the fan controller according to engine coolant temperature, vehicle speed, and the condition of the A/C switch. (The closer the average voltage at the terminal comes to 5 volts, the higher the fan speed becomes.)

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)

- Malfunction of the fan motor relay.
- Malfunction of the fan motor.
- Malfunction of the fan controller.
- Improper connector contact, open or short-circuited harness wire.
- PCM failed.


DIAGNOSIS

STEP 1. Check harness connector B-18 at PCM for damage.





Q. Is the harness connector in good condition?

YES Go to Step 2.

NO Repair or replace it. Harness Connector Inspection.
Then confirm that the malfunction symptom is eliminated.

STEP 2. Measure the output voltage at PCM harness side connector B-18.





(1)Disconnect the B-18 and measure at the harness side.
(2)Turn the ignition switch to the "ON" position.





(3)Measure the voltage between terminal No. 10 and ground.

- Voltage should be between 4.9 and 5.1 volts. (Fan rotates at high speed.)
(4)Connect a jumper cable between terminal No. 10 and ground.

- The fan should stop.
(5)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Are the measured voltage and fan condition normal?

YES Replace the PCM. When the PCM is replaced, register the encrypted code. Encrypted Code Registration Criteria Table. Ignition Switch - Then confirm that the malfunction symptom is eliminated.

NO Go to Step 3.

STEP 3. Check for open circuit and short circuit to ground and harness damage between fan controller A-23 (terminal No. 2) and PCM connector B-18 (terminal No. 10).









Q. Is the harness wire in good condition?

YES Symptom Chart.

NO Repair it. Then confirm that the malfunction symptom is eliminated.

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