Malaguti SPIDER MAX GT 500 Manual Diagnóstico página 237

SPIDER MAX 500
Check for the coolant temperature sensor signal.
Replace the central unit if necessary (see p. 94).
Repeat the test (p. 110).
Select the menu from the "ACTIVE DIAGNOSTICS" function.
Start the diagnosis with the engine idling and warm.
Make sure that the stepper motor controls the rpm change
and wait for the diagnostic multimeter reading.
Test ended with success.
Rpm change can be heard.
The stepper motor and circuit operates
Test ended with success. No rpm change. Remove the throttle body (see chapter THERMAL
UNIT AND TIMING - Engine Manual).
Make sure the secondary intake air circuit is cleaned. Move the key switch from the "ON" to
the "OFF" position and then back to "ON" and check for the piston valve movement.
F. 94
In case the valve does not move, replace the throttle body (see chapter
THERMAL UNIT AND TIMING - Engine Manual).
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Select the "STEPPER MOTOR" diagnosis.
Parameters
Immobilizer
Errors
Delete errors
Active Diagnostics
CO calibration
Main
properly.
111 12/04
Fuel pump relay
H.T. coil
Stepper motor
Rev. counter
Injector
Fan relay
5/8 Diagnosis 3/6
Test failed.
No rpm change.
B