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ENGINE COOLING DIAGNOSIS TSB Revision ENGINE COOLING 14-10 STEP 12. Check the symptoms. Q: Do the radiator fan and condenser fan operate correctly? INSPECTION PROCEDURE 4: Radiator Fan and Condenser Fan do not Change Speed or Stop NOTE: If the engine coolant temperature reaches 110 ° C(230 ° F) or higher, the radiator fan control rotates the radiator fan for up to 5 minutes even after the ignition switch is turned to the "LOCK (OFF)" position [the fan ° C(230 ° F) or lower . ] Radiator Fan and Condenser Fan Drive Circuit CIRCUIT OPERATION • The fan controller is powered from fusible link • The PCM judges the required revolution speed of TECHNICAL DESCRIPTION TROUBLESHOOTING HINTS • Malfunction of fan control relay • Malfunction of fan controller • Malfunction of PCM DIAGNOSIS Required Special Tool: • MB991223: Harness Set STEP 1. Check the fan control relay. . Q: Is the fan control relay in good condition? YES : Go to Step 2. |