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TROUBLESHOOTING ENGINE COOLING 14-15 (7) Disconnect engine-ECU connector or engine-A/T-ECU connector C-134 <4G63> or (8) Reconnect the connector with connector terminal pin still installed. Q: Does the cooling fan rotate? And when the connector terminal pin is connected to the body YES : Go to Step 7. NO : Replace the fan controller (Refer to ). Then go to Step 8. STEP 7. MUT-II/III self-diag code Check if an MPI system self-diag code is set. (Refer ) <4G63> or (Refer to GROUP 13B - Trouble shooting ) <4G69>. Q: Diagnosis code set? YES : Inspection chart for diagnosis code (Refer to GROUP 13A - Trouble shooting ) <4G63> or Inspection chart for diagnosis code (Refer to GROUP 13B - ) <4G69>. NO : Replace the engine-ECU <M/T> or ) <4G63> or (Refer to GROUP 13B, Engine-ECU and ) <4G69>. Then go to Step 8. STEP 8. Check the symptoms. Q: Does the radiator fan motor and the condenser fan motor operate correctly? YES : This symptoms is complete. NO : Return to Step 1. INSPECTION PROCEDURE 3: Radiator Fan does not Operate Radiator Fan and Condenser Fan Drive Circuit TECHNICAL DESCRIPTION TROUBLESHOOTING HINTS DIAGNOSIS STEP 1. Check the radiator fan motor. Refer to Q: Is the radiator fan motor in good condition? YES : Go to Step 2. NO : Replace the radiator fan motor (Refer to ). Then go to Step 3. STEP 2. Check the fan controller. Refer to Q: Is the fan controller in good condition? YES : Go to Step 3. NO : Replace the fan controller (Refer to ). Then go to Step 3. STEP 3. Check the symptoms. Q: Do the radiator fan operate? YES : This symptoms is complete. NO : Return to Step 1. |