| Condition |
Possible Cause |
Action |
| Engine overheats (Radiator fan operates) |
Loose or broken water pump belt |
Adjust or replace. |
| Not enough coolant |
Check coolant level and add as necessary. |
| Faulty thermostat |
Replace. |
| Faulty water pump |
Replace. |
| Dirty or bent radiator fins |
Clean or remedy. |
| Coolant leakage on cooling system |
Repair. |
| Clogged radiator |
Check and replace radiator as necessary. |
| Faulty radiator cap |
Replace. |
| Improper ignition timing |
Adjust. |
| Dragging brakes |
Adjust brake. |
| Slipping clutch |
Adjust or replace. |
| Poor charge battery |
Check and replace as necessary. |
| Poor generation generator |
Check and repair. |
| ECT sensor faulty |
Check and replace as necessary. |
| Radiator cooling fan relay No.2 and/or No.3 faulty |
Check and replace as necessary. |
| Radiator fan motor faulty |
Check and replace as necessary. |
| ECM faulty |
Check and replace as necessary. |
| Wiring or grounding faulty |
Repair as necessary. |
| Equipped with too much electric load part(s) |
Dismount. |
| Engine overheats (Radiator fan does not operate) |
Fuse blown |
Check 15 A fuse of relay/fuse box and check for short circuit to ground. |
| Radiator cooling fan relay No.1 faulty |
Check and replace as necessary. |
| ECT sensor faulty |
Check and replace as necessary. |
| Radiator cooling fan motor faulty |
Check and replace as necessary. |
| Wiring or grounding faulty |
Repair as necessary. |
| ECM faulty |
Check and replace as necessary. |