Fault Code 5

Fault Code 5:

1. Disconnect electrical connector from low pressure cutout switch or electronic cycling switch and run diagnostics. If code 5 is displayed, proceed to step 2. If code 5 is not displayed, locate and repair fault between engine controller and cycling switch.
2. Check for continuity between cycling switch and ATC control pin 13. If continuity exists, replace ATC control. If continuity does not exist, repair circuit and recheck system operation.