Sequential PFI Engines

Measure resistance between the suspect cylinder test pin (from the Cylinder Balance Test) and test pin No. 37 at the breakout box. Refer to TRUCK - INDIVIDUAL INJECTOR RESISTANCE  table. For no starts, choose any injector and measure resistance between that injector circuit test pin and test pin No. 37 at breakout box. Record resistance. Refer to TRUCK - INDIVIDUAL INJECTOR RESISTANCE  table.

Remove breakout box and reconnect ECA. Service open/short in harness/connector. If okay, replace injector. Rerun QUICK TEST and Cylinder Balance Test.

For No Start: Service open in VPWR circuit.