Engine Start Alarm Circuit
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Overview
Engine Start Alarm Circuit
CODE | REASON | EFFECT |
Fault Code: 588 PID: S121 SPN: 611 FMI: 3/3 LAMP: Yellow SRT: |
High voltage detected at the engine start alarm circuit when low voltage was expected by the electronic control module (ECM). |
The ICON™ idle control system will be disabled. Only mandatory shutdown will be enabled. The engine start alarm can sound continuously. |
Engine Start Alarm Circuit
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Circuit Description
The engine start alarm circuit turns on the audible engine start alarm to warn of an automatic engine start.
Component Location
The engine start alarm is typically located in the engine compartment. Use the OEM manual for specific locations.
Shop Talk
This fault typically indicates a short circuit to battery or an open circuit. The engine must be equipped with a three-level engine braking harness and the ICON™ feature must be activated for the engine start alarm to function.
Refer to Troubleshooting Fault Code t05-588.