SPN 702, FMI 4 - AUX Analog Pull-Up 2 Low Voltage Fault
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Configuration #1- Auxiliary Sensor (proportional voltage type), Configuration #2- Auxiliary Sensor (switch-type) Check Condition- Key On, Engine On Fault Condition- AUX_ana_PU2 voltage lower than expected Corrective Action(s)- Illuminate MIL, sound audible warning or illuminate secondary warning lamp, power derate, force idle, shutdown, or any combination thereof as defined in calibration. Non-emissions related fault
The auxiliary analog input circuit is customer specific and can be used to perform an action based on a sensor that switches to ground or a sensor that outputs a proportional voltage. Typical uses of the auxiliary circuit includes switches that activate particular software strategies, switches that act as vehicle safeties to trigger derate or shutdown conditions, or auxiliary senders used to drive gauges. The circuit internal to the ECM is connected in parallel with the regulated 5 VDC power supply so that when no load is connected to the circuit the feedback voltage is equal to 5 VDC. This fault is active when the voltage feedback from the sensor is below the limit defined in calibration.
Indmar Products
2008 270
All Rights Reserved Draft Rev. A-Jan. 2008
