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#1
12-06-2004, 06:36 PM
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No 5V reference signal pins A4 & A5 from ECM.
I have a 92 Camaro v6 which is running poorly. Check engine light on. ECM codes for low MAP and TPS voltage. Back probing of ECM shows only .5 to 1.5 volts. ECM and PROM were replaced. Circuits were checked showing no shorts to ground. Pin voltages were checked and confirmed ok. Grounds were checked also. All voltage inputs and grounds seem ok. Any ideas?
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