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Hi Paul
I Went Over The Flow Chart Again And The Signal Comes From The Ecu To The Tcm ,if You Have No Volts With The Tcm Unplugged When You Have 4.59 At The Ecm ,you May Just Have A Bad Tcm ,do One More Check Unplug Both Connectors And Check The Resistance Of The Wire 0.04 Should Be Correct ,i Will Check The Update Manual On Line Tomorrow At Work ,i Checked Aldata And They Have The Same Chart,i Ll Let You Know What I Find