4 PCM codes. Please help! Thanks
The 1351 will only be set during cranking. This voltage should be between 1 and 4 volts. The only way that line could be higher than that is either the ICM has an internal short, the ground was lost to the ICM, the (IC) wire is shorted to another wire that is carrying a higher voltage (like battery voltage) or the PCM has an internal problem.
That's it.
Start by checking the ground to the ICM
That's it.
Start by checking the ground to the ICM
Well your saying it is 1 to 4 volts during cranking? On the white wire to the ICM? Doesnt take my car long to crank so hard to tell unless I shut down the fuel or ignition, should I do that? But while it was running it was .6-1.5v.
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Nayr
LT1 Based Engine Tech
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Mar 3, 2023 08:34 PM



