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Old 09-28-2021, 04:32 PM   #29
Join Date: May 2016
Posts: 44

I think at this point you are just confusing yourself and the pcm. On eec-iv , the first step is to check KOEO, then KOER. Disconnect the battery for a few minutes to clear all codes and memory. Start the engine so it can warm up, then shut it off. Then, KOEO tests. If any codes are shown, fix these first.
Then perform KOER tests. As the engine comes up to a fast idle, hit the brake, turn the steering wheel and cycle the overdrive switch. The scan tool will tell you when to floor and release the throttle, usually after the idle has returned to normal.
536 is a code for the brake pedal switch and easy to troubleshoot. 12 volts to t
he switch, and the signal return to the pcm pin#2. Should be a light green wire
Also, some of the cheaper scan tools will tell lies, so be aware of that.
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Old 10-16-2021, 12:32 PM   #30
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So out of nowhere i ran the KOER test today after replacing the air pump to get rid of that code. I hit the brake twice. Once when I turned off OD when cylinder ID flashed and i hit it again a bit later and turned the wheel. I shouldn't have to turn the wheel for my setup but perhaps that helped but who knows. Very strange but all 111s now.
1995 Fleetwood Southwind
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brake, ford

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