TROUBLESHOOTING
Troubleshooting - 70
Symptom: Possible Cause:
Engine overheats. Dirty radiator screen.
Low coolant level.
Debris in engine compartment.
Defective radiator cap.
Defective thermostat.
Loose alternator fan belt.
Blown head gasket.
Oil light comes on when running. Low oil level.
Faulty oil sender.
Faulty or plugged oil pump.
Engine emits white smoke. Low engine temperature.
Faulty head gasket.
Water in combustion chamber.
Excessive fuel consumption. Plugged or restricted air fi lters or hose.
Dirty or faulty fuel injectors.
Dirty or faulty carburetor.
Engine uses excessive oil. Check for leaks.
Incorrect oil viscosity.
Plugged or restricted air fi lters and or hose.
Worn rings or cylinder walls.
Worn or faulty valves.
Electrical
Anytime there is an electrical issue, fi rst check to ensure the LED light for the Power input (bottom right cor-
ner) of the TCM is turned on when the key switch is in the Off position. If the light is not on, check the battery
disconnect switch to ensure it is turned on, then check the 10 amp fuse in slot #10 of the front fuse panel.
Next, turn the key switch to the On position and check to see if any of the other lights turn on. If no other
lights turn on, check the 5 amp fuse in slot #8 of the front fuse panel. If any other lights turn on, you can start
troubleshooting the rest of the TCM functions.
Symptom: Possible Cause:
Battery does not charge. Loose or corroded connections.
Broken or loose wire in charge system.
Blown fuse or fuse link in charge system.
Defective battery.
Loose alternator belt.
Defective regulator.
Defective alternator.
Lights do not activate. Blown fuse.
Blown light bulb.
Broken wire.
Defective light switch.
Engine (Continued)
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