|
Looking over the electrical wiring diagram & manual, it appears the instrument panel tachometer is driven by the ECU (ECU output terminal labled "TACH"). The ECU receives input from the "RPM signal circuit", which involves the Crankshaft postition sensor (ECU input terminal labeled "NE+") and the Camshaft position sensor (ECU input terminal labeled "G+") , although it looks like the Crank position sensor is the real driver for the RPMs. I assume the ECU then uses the input from the RPM signal circuit to drive the tach. The output from the ECU "TACH" terminal (Black/Orange wire) ultimately splits, with one leg going to the instrument panel tachometer and the other going to the A/C system's "A/C Amplifier".
Also, you really should've made your thread title more descriptive of the actual question. You'll likely get quicker and more responses.
Last edited by Rattlin_Steele; 07-28-2010 at 11:03 AM.
|
Linear Mode
