Intercooler Water Pump Monitor

Intercooler Water Pump
The Water Pump monitor has been implemented to prevent engine damage, in the event of water pump failure. The monitor is only present on SC variants and operates continuously during each drive, with a sample rate of 2048 msec. The basic operation of the monitor is to compare the value of Intercooler intake air temperature (IAT2) against the intake air temperature (IAT1), at the end of a period of steady state operating conditions. Once the defined steady state conditions are satisfied, a drive delay counter is incremented. Upon exceeding a calibrated threshold, if the difference between the two temperature values (IAT2 - IAT1) is greater than the mapped threshold, a failure counter is incremented. If the counter exceeds a calibrated threshold, a failure judgement is made. A normal judgement is made if the two temperature values are below the failure threshold, at the point of judgement.