Crank No Start After Engine Repairs - AC Pressure Sensor and TP Sensor Connectors May Be Reversed - keywords after clear cylinder drvie head high flood induced injector internal mode nostart previous

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Some technicians may encounter a crank no start with no injector pulse following engine repairs. Upon inspection of Tech 2 data, they may notice that the TP voltage displayed on the Tech 2 is 4 - 5 volts.

If this concern is encountered, ensure that the AC pressure sensor and TP sensor connectors are not reversed. The TP sensor connector should have a purple circuit, a blue circuit, and a white circuit. If the connectors are reversed, the TP voltage signal to the ECM will be around 4.5 volts, which indicates wide open throttle, causing the ECM to activate clear flood mode. While operating in clear flood mode, the ECM will completely turn OFF the fuel injectors as long as the ECM indicates a WOT condition while cranking.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.