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Electronic Control System Signature, ISX and QSX15 Engines – ICON™ Lamp Does Not Illuminate

Symptom Tree  t095-105

This is symptom tree t095-105
Cause Correction

ICON™ lamp bulb is malfunctioning

Verify the bulb is secure in the socket. Check the ICON™ lamp for voltage. Replace the bulb, if necessary. Refer to the OEM troubleshooting and repair manual for the procedure.
 

ICON™ lamp circuit is malfunctioning

Check the ICON™ lamp circuit. Refer to the OEM troubleshooting and repair manual for the procedure.
 

Battery voltage supply to the electronic control module (ECM) has been lost

Check the battery connections. Check the fuses and the unswitched battery supply circuit. Refer to Procedure 019-087.
 
Last Modified:  11-Dec-2003
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