Detroit Diesel MBE 4000 Service Manual page 572

15.2 GENERAL TROUBLESHOOTING
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The fuel tank is low or empty.
The fuel filter is clogged.
The fuel line, the fuel pre-filter, or the screen in the fuel
tank is blocked.
The camshaft TDC sensor and/or the crank angle
position sensor are out of adjustment.
The camshaft TDC sensor and/or the crank angle
position sensor are damaged.
The constant-throttle valves are malfunctioning.
There are other problems in the fuel system.
The fan hub is damaged.
The fan wiring is damaged.
The parameter settings in the PLD or VCU control unit
are incorrect.
The fan override switch is on.
The fan hub is damaged.
The parameter settings in the PLD or VCU control unit
are incorrect.
15-6
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Problem—The Engine Starts, But Dies
Cause
Problem—The Engine Fan Doesn't Work
Cause
Problem—The Engine Fan Is Constantly On
Cause
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Remedy
Add fuel and bleed the fuel system, if necessary.
Replace the filter element.
Clean and bleed the system. Have the fuel lines and
filters checked by an authorized dealer.
Push both sensors into their holes as far as they will go.
If this does not solve the problem, bring the vehicle to an
authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Bring the vehicle to an authorized dealer for service.
Remedy
Replace the fan hub.
Repair the fan wiring.
Have an authorized dealer reprogram the control unit.
Remedy
Check the operation of the fan override switch.
Replace the fan hub
Have an authorized dealer reprogram the control unit.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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