Error code 8, advice??

[fkn16v]

jondee86 Wrote:1. Resistance of sensor approx 2000 Ohms @ 20 deg C (measured
at sensor with wires disconnected).

Just tested this and got 2000ohms

jondee86 Wrote:2. Resistance of sensor circuit with sensor connected, measured from
ECU end while disconnected from the ECU 2000-3000 Ohms @ 20 deg C.

Did this also and got 3000ohms

jondee86 Wrote:3. Voltage across sensor circuit with everything connected and ignition
switched ON 2-2.8 volts.

Also this and got 2.8volts.

Is this test n# 3 correct thou Jondee, Toyota 4age book says between THA and E2 with IGN ON there shouldnt be any voltage between these 2. Which leads me too belive that something inside the ecu isnt operating properly.

jondee86 Wrote:These tests tell you that the sensor resistance is in range, the wiring
has continuity, and the ECU is applying the correct voltage to the sensor
circuit. In theory, if you obtain the correct values, you should not be
getting a no. 8 error code. If you are, then you may have to swap in a
known good ECU to see if the fault is in your ECU.

Cheers... jondee86

http://www.toymods.net/TechDocs/4age_book/efi/fi_45.jpg

Number 1 test on there states No voltage, but i have 2.8 volts with IGN ON

So far all efforts point towards a new ecu.