how can i check CTS with multimeter
22-01-2010, 03:09 PM
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how can i check CTS with multimeter
i want to check my CTS,ATS and 3 bar map sensor with multimeter.
Where should i put multimeter on the sensor with unplugged cable or ?
Where should i put multimeter on the sensor with unplugged cable or ?
22-01-2010, 06:01 PM
#2
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Depends what you want to measure.
I always measure Voltage, which means everything connected and ignition on.
CTS and ATS cold around 2.2 to 2.4 Volt depending on temperature. But after a night outside they should be nearly equal. Map sensor 1.5 Volt with engine off.
Warm CTS should be 0,4 - 0,3 Volt on a 2wd and 0,3 - 0,2 Volt on a 4wd.
I always measure on the pins of the ecu, but I have a breakout box.
Your choice, either on the ecu connector or at the device (but CTS is difficult).
Diagram here: http://www.siipicossu.com/manuaaleja/manuaalit.htm
and here: http://bigturbo.co.uk/main6.htm
With sensors disconnected Sensor values (resistance): http://bigturbo.co.uk/main4.htm
The voltages for the map-sensors are not completely correct.
I always measure Voltage, which means everything connected and ignition on.
CTS and ATS cold around 2.2 to 2.4 Volt depending on temperature. But after a night outside they should be nearly equal. Map sensor 1.5 Volt with engine off.
Warm CTS should be 0,4 - 0,3 Volt on a 2wd and 0,3 - 0,2 Volt on a 4wd.
I always measure on the pins of the ecu, but I have a breakout box.
Your choice, either on the ecu connector or at the device (but CTS is difficult).
Diagram here: http://www.siipicossu.com/manuaaleja/manuaalit.htm
and here: http://bigturbo.co.uk/main6.htm
With sensors disconnected Sensor values (resistance): http://bigturbo.co.uk/main4.htm
The voltages for the map-sensors are not completely correct.
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