Test DQ: Step 2

2) Code 53: Attempting To Generate Code 63  Turn ignition switch to "OFF" position. Wait 10 seconds. Disconnect FIPL sensor harness connector at the fuel injection pump. Inspec connector for damaged or corroded pins, loose wires or other damage. Service as needed. Ignoring all other codes, if Code 63 present, go to the next step. If Code 63 is not present, go to step 4).