New setup - should I see +5v at SYNC sensor?
Posted: Mon Oct 15, 2012 10:10 pm
I've got a newly set-up M84, and was given advice on how to setup the CRIP by a guy who seems to generally know what he's doing; he's done quite a few Mx00-series, possible not an M84 though.
Anyhoo, I have a 12-tooth wheel for CAS, and a single tooth for SYNC in the dizzy. It was suggested I set the engine up at TDC, manually wind the crank back about 90 degrees or so (between two teeth), fit the dizzy so that turning the engine forward would trigger a SYNC, turn the engine again until the first REF signal fired; and the CRIP is the number of degrees left until the crank gets to TDC.
Now I was told I should see the CAS and REF signals trigger; the falling edge or leading edge, as I manually turn the engine. I had the ECU connected to the PC, but saw nothing; I'm seeing 40kPa from the MAP (which probably means wrong sensor config), temps for air & engine look OK, TPS is working; but I'm seeing nothing triggered as I turn the engine so those REF & SYNC teeth go past their various sensors. Both REF and SYNC are showing a fairly steady 3.71V to 3.73V, barely wavering at any time.
The REF plug is a bit painful to get to; but I've put a multimeter on the SYNC plug and it's recording no voltage at all. Is this my problem; should I be seeing voltage at the SYNC (and REF) plug if the ECU's "on" but there's been no attempt at cranking & no RPM etc?
Anyhoo, I have a 12-tooth wheel for CAS, and a single tooth for SYNC in the dizzy. It was suggested I set the engine up at TDC, manually wind the crank back about 90 degrees or so (between two teeth), fit the dizzy so that turning the engine forward would trigger a SYNC, turn the engine again until the first REF signal fired; and the CRIP is the number of degrees left until the crank gets to TDC.
Now I was told I should see the CAS and REF signals trigger; the falling edge or leading edge, as I manually turn the engine. I had the ECU connected to the PC, but saw nothing; I'm seeing 40kPa from the MAP (which probably means wrong sensor config), temps for air & engine look OK, TPS is working; but I'm seeing nothing triggered as I turn the engine so those REF & SYNC teeth go past their various sensors. Both REF and SYNC are showing a fairly steady 3.71V to 3.73V, barely wavering at any time.
The REF plug is a bit painful to get to; but I've put a multimeter on the SYNC plug and it's recording no voltage at all. Is this my problem; should I be seeing voltage at the SYNC (and REF) plug if the ECU's "on" but there's been no attempt at cranking & no RPM etc?