Toyota MR2 Message Board - View Single Post

Jeff · 02-19-2007, 01:20 PM

I'll check that tonight. I haven't verified voltage at computer. When I turn on the ignition (not start), the check engine light does not come on now. Following the manual, I shorted the W terminal at the diagnostics terminal and it did come on. I have not fully verified the wires between the ignition and the ECU, but I have verified the ground is good from the ECU harness pins E, E1, and E2 to the ground point on the intake manifold.

Ok - battery, +B, +B1 all have battery voltage. STA - is in specification when starting. IGN - in specification with ignition on. Still no check engine light when turning key to on position.

Anybody ever work with SIA Electronics? I'm going to let them rebuild the computer. They say 1-3 day turn around time with a $290 cost.

02-19-2007, 01:20 PM	#3 (permalink)
Jeff No Skills Join Date: Feb 2007 Posts: 16 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I'll check that tonight. I haven't verified voltage at computer. When I turn on the ignition (not start), the check engine light does not come on now. Following the manual, I shorted the W terminal at the diagnostics terminal and it did come on. I have not fully verified the wires between the ignition and the ECU, but I have verified the ground is good from the ECU harness pins E, E1, and E2 to the ground point on the intake manifold. Ok - battery, +B, +B1 all have battery voltage. STA - is in specification when starting. IGN - in specification with ignition on. Still no check engine light when turning key to on position. Anybody ever work with SIA Electronics? I'm going to let them rebuild the computer. They say 1-3 day turn around time with a $290 cost. Last edited by Jeff; 02-19-2007 at 07:51 PM. Reason: to add more detail