Hi.
I have a 1UZ, A340f using the factory ECU. The transmission has suddenly stopped shifting when in drive.
I have checked (at the ECU) BATT, B+, NSW, STA, IGSW and they all seem to have power when necessary. I measured there signal between NCO- and NCO+ and also between SP2- and SP2+. The signal has an increasing frequency as the RPM and speed increase (wasn't sure what else to measure but presumed the ECU is triggering on the rising/falling edge). Putting meters on S1 and S2 while driving in D show 12V and 0V respectively and don't change at the point I'd definitely expect a gear change. These solenoids click if I manually apply 12V.
I also tried removing the main transmission plug; R, L and 2 are all fine and when in D it 4 as, I think, is expected.
I was hoping to get some advice or suggestions as to what the problem may be.
Thanks in advance
I have a 1UZ, A340f using the factory ECU. The transmission has suddenly stopped shifting when in drive.
I have checked (at the ECU) BATT, B+, NSW, STA, IGSW and they all seem to have power when necessary. I measured there signal between NCO- and NCO+ and also between SP2- and SP2+. The signal has an increasing frequency as the RPM and speed increase (wasn't sure what else to measure but presumed the ECU is triggering on the rising/falling edge). Putting meters on S1 and S2 while driving in D show 12V and 0V respectively and don't change at the point I'd definitely expect a gear change. These solenoids click if I manually apply 12V.
I also tried removing the main transmission plug; R, L and 2 are all fine and when in D it 4 as, I think, is expected.
I was hoping to get some advice or suggestions as to what the problem may be.
Thanks in advance