4
Troubleshooting
Problem Reason
Solution
Engine will not start
Isolator switch is switched OFF
Switch on isolator switch
Battery voltage too low
Check battery and connections
Faulty fuel supply
Check fuel level and connections
Electrical stop on fuel pump defective.
Check connections
Circuit breaker tripped
Reset (Push to reset)
Complete loss of electrical functions
Maxi fuse blown
Rectify electrical fault and replace fuse
Maxi Fuse blown
Faulty starter motor/solenoid
Replace motor/solenoid and maxi fuse
(Current drawn by solenoid exceeds 25A)
(only replace with a 30 amp fuse)
Short circuit on main feed or starter solenoid cables
locate and repair
Engine stops soon after start-up
Blocked fuel or air filter
Replace fuel or air filter
Air in fuel system
Check fuel line connections
Black engine smoke
Air filter clogged (Indicator red)
Replace or clean air filter
Fuel system defect
Contact Thwaites dealer
Wrong fuel
Replace fuel and filter
Engine oil pressure
Low oil level
Top up engine oil
High engine temperature
Radiator choked
Clean radiator
Low coolant level
Top up coolant
Irregular alternator
Defective or loose alternator belt
Adjust, or, if necessary, replace alternator belt
Always investigate panel warning lights, tripped circuit breakers and a blown maxi fuse.