| Engine overheats (Radiator fan operates) |
Loose or broken accessory drive. |
Check accessory drive belt.
. Refer to ACCESSORY DRIVE BELT TENSION INSPECTION |
| Not enough coolant |
Check coolant level and add as necessary
. Refer to Coolant Level Check |
| Faulty thermostat |
Check thermostat
. Refer to Thermostat Inspection |
| Faulty water pump |
Check water pump
. Refer to Water Pump Inspection |
| Dirty or bent radiator fins |
Clean or remedy
. Refer to Radiator On-Vehicle Inspection and Cleaning |
| Coolant leakage on cooling system |
Check cooling system for leakage
. Refer to Engine Cooling System Inspection |
| Clogged radiator |
Replace radiator
. Refer to Radiator Removal and Installation |
| Faulty radiator cap |
Check radiator cap
. Refer to Engine Cooling System Inspection |
| Dragging brakes |
Check brake
. Refer to BRAKES SYMPTOM DIAGNOSIS |
| Slipping clutch |
Check clutch
. Refer to CLUTCH (HYDRAULIC TYPE) SYMPTOM DIAGNOSIS |
| Poor charged battery |
Check battery
. Refer to BATTERY INSPECTION |
| Poor electricity generated by generator |
Check generator
. Refer to GENERATOR TEST |
| ECT sensor faulty |
Check ECT sensor
. Refer to ECT (ENGINE COOLANT TEMPERATURE) SENSOR INSPECTION |
| Radiator cooling fan motor faulty |
Check radiator cooling fan motor
. Refer to Radiator Cooling Fan Assembly On-Vehicle Inspection |
| ECM faulty |
Check ECM and its circuit
. Refer to INSPECTION OF ECM AND ITS CIRCUITS |
| Wiring or grounding faulty |
Repair wiring
. |
| Equipped with too many additional electrical part(s) |
Dismount them
. |
| Engine overheats (Radiator fan does not operate) |
Fuse blown |
Check fuse
. |
| Radiator cooling fan relay faulty |
Check radiator cooling fan relay
. Refer to Radiator Cooling Fan Relay Inspection |
| ECT sensor faulty |
Check ECT sensor
. Refer to ECT (ENGINE COOLANT TEMPERATURE) SENSOR INSPECTION |
| Radiator cooling fan motor faulty |
Check radiator cooling fan motor
. Refer to Radiator Cooling Fan Assembly On-Vehicle Inspection |
| Wiring or grounding faulty |
Repair as necessary
. |
| ECM faulty |
Check ECM and its circuit
. Refer to INSPECTION OF ECM AND ITS CIRCUITS |