Pump/Motor Circuit Not Working Properly

When monitored: At pump/motor drive-off check or when pump/motor has been commanded to be on via CAB.

Set condition: The pump/motor is controlled and monitored by the CAB. The CAB turns on the pump/motor by grounding the pump/ motor relay control circuit (pin 3). The CAB monitors the rotation sensor signal. If the rotation sensor signal is missing after the CAB has turned on the pump/motor, this code is set.


Possible causes:

> Ground circuit open
> Pump/motor assembly
> Fused B(+) circuit open
> ABS main relay output circuit open
> Pump/motor connector disconnected
> Pump/motor speed sensor (-) circuit open
> Pump/motor speed sensor (+) circuit open
> Fused B(+) circuit shorted to ground
> ABS main relay output circuit shorted to ground
> ABS pump/motor relay output circuit open
> Pump/motor speed sensor (+) circuit shorted to ground
> ABS pump/motor relay control circuit shorted to ground
> Pump/motor speed sensor (-) circuit shorted to B(+)
> Pump/motor speed sensor (+) circuit shorted to B(+)
> ABS pump/motor relay output circuit shorted to B(+)