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ICON™ Lamp Circuit
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Overview
| CODE | REASON | EFFECT |
| Fault Code: 199 PID: S122 SPN: 612 FMI: 4/4 LAMP: Yellow SRT: |
Less than (+) 6 VDC (low voltage) detected at the ICON™ lamp circuit when high voltage was expected by the ECM. |
The ICON™ idle control system will be disabled. Only |
 ICON™ Lamp Circuit
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Circuit Description
The ICON™ lamp circuit turns on the ICON™ lamp to indicate when the ICON™ system is active. In addition, ICON™ fault codes will be flashed out on this lamp.
Component Location
The ICON™ lamp is typically located in the vehicle cab on the dashboard panel.
Shop Talk
This fault typically indicates a short circuit to ground or an open circuit. A short circuit to ground can cause the ICON™ lamp to remain on continuously, regardless if ICON™ is enabled or disabled. An open circuit can be caused by a burned-out bulb. This fault code can not be flashed out on the ICON™ lamp. It can be read using INSITE™
or flashing the diagnostic code on the red and yellow lamps.
Refer to Troubleshooting Fault Code t05-199.
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