C15 – 0111-04 Coolant Level voltage low (12)

Conditions Which Generate This Code:

The ECM detects the following conditions:
• The signal voltage from the coolant level sensor is less than 0.5 VDC for more than ten seconds.
• The “Coolant Level Sensor” parameter is programmed to “2-wire float sensor”.
• The ECM has been powered for at least two seconds.

System Response:
The ECM will default to “OK” for coolant level.
“DIAG” will be displayed next to the status for “Engine Coolant Level” on the electronic service tool.

Possible Performance Effect:
None

Troubleshooting:

Perform the following diagnostic procedure:
“Coolant Level Sensor Circuit – Test”

Results:
• OK – STOP.

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