Yaris 2000 - tachometer stop display rpm

[holoais]

hello,

I have Toyota Yaris year 2000 (Japan version) designed for Europe (Poland).
Few days ago I installed A/C on my car. A/C work nice, computer not show any errors but tachometer not show any values on panel. I checked all fuses, connectors and wire installation.

Anybody known from computer take tachometer signaling and how send this signaling to display panel?


regards,

Yaris 1.0 16V 68KM _CP10
1SZFE

[CTScott]

The tach gets its signal from the ECM. The black wire (pin 15) in the smaller connector between the violet wire with a white stripe and the yellow wire is the tach feed.

The wire goes to a junction connector that is above the airbox under the dash. You may have accidentally disconnected that connector when installing the AC. If you follow the black wire from the connector, to the left you will find the junction connector.

[holoais]

I found junction (J4) under dashboard, but there aren't any socket to connect it. One pin from this connector go to ECU (pin 15), second go to digital meter. I connected this pins via short wire and RPS now showing on meter.

big tank's for help!

regards,