Checking Components And Wiring
Check the cable between combustion preheater module (CPM) terminal #10 and the signal terminal for the combustion fan (the black lead from the fan). Check for a short-circuit to supply voltage.
The combustion fan must be replaced if no faults are found in the cable.
Remedy as necessary.
Other information
- see CONNECTING THE BREAKOUT BOX
- see SIGNAL SPECIFICATION
- see FUEL INJECTION NOZZLE / FAN MOTOR / PRESSURE EQUALIZER, REPLACING
- see CHECKING WIRING AND TERMINALS
- Continue
Refer to VERIFICATION
Check the cable between combustion preheater module (CPM) terminal #10 and the signal terminal for the combustion fan (the black lead from the fan). Check for an intermittent short-circuit to supply voltage.
Remedy as necessary.
Other information
- see CONNECTING THE BREAKOUT BOX
- To access the combustion fan, see: FUEL INJECTION NOZZLE / FAN MOTOR / PRESSURE EQUALIZER, REPLACING
- see SIGNAL SPECIFICATION
- see WATER PUMP ENGINE COOLANT HEATER, REPLACING
- see CHECKING WIRING AND TERMINALS
- Continue
Refer to VERIFICATION