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Controller Diagnostic Lamp
NOTE: Part number under CONTROLLER DIAGNOSTIC LAMP is the decal part
number; not the lamp. The lamp part number is 85-4491
If the machine malfunctions, check the green Controller Diagnostic
Lamp. If the lamp is
ON
, with ignition key switch in ON position, the
electronic control unit (ECU) is functioning normally. If the lamp is
blinking, the controller has detected a problem in the electrical circuit.
The lamp will stop blinking and automatically reset when the key
switch is turned OFF.
If Controller Diagnostic Lamp is
BLINKING ON
and
OFF
:
1. ECU has detected an output with a short circuit.
2. ECU has detected an output with an open circuit.
Use Diagnostic ACE
TM
to find which output is malfunctioning.
NOTE: If the green Controller Diagnostic Lamp is blinking on and
off, connect the Diagnostic ACE, without turning the key switch off,
then toggle to “
OUTPUTS DISPLAYED”. The blinking LED on the
Diagnostic ACE will indicate which output is faulty. To stop the engine
without turning off the key switch, use the manual fuel stop lever on
the injection pump or grasp the steering wheel, raise yourself up off
the seat and lightly push the traction pedal so the interlock circuit
stops the engine.
If the controller diagnostic lamp is
OFF
:
1. ECU is not powered on.
2. Loop-back connector is not attached.
3. Diagnostic lamp is burned out.
4. ECU is not functioning correctly.
Check electrical connections, input fuses and diagnostic lamp to find
malfunction. Make sure loop-back connector is secured to wire
harness connector.
Using the Diagnostic ACE (RM 5100-D/5300-D) Page 1