Operation CHARM: Car repair manuals for everyone.

Engine Coolant

CHECK COOLANT TEMP
The IPC illuminates the ENGINE COOLANT TEMPERATURE WARNING indicator when the IPC determines that the coolant temperature is greater than 121°C (250°F).

HOT COOLANT TEMP
The IPC illuminates the TEMP indicator when the IPC determines that the coolant temperature is greater than 121°C (250°F). The IPC receives a class 2 message from the PCM indicating the coolant temperature. The IPC sends a class 2 message to the BCM in order to activate an audible warning.

LOW COOLANT LEVEL
The IPC illuminates the LOW COOLANT indicator when the IPC detects a low coolant level condition (signal circuit is low). The IPC sends a class 2 message to the BCM in order to activate an audible warning.