Camshaft And Crankshaft Position Sensors

[Andy 105 1 Cars]

Evening,

Just about to build the last part of my loom to connect my Emerald K6 to engine sensors and injectors, coils etc and I have a dumb question. Both cam and crank sensors are JPT 3 pin affairs. I had assumed that they were Hall effect and hence need a supply on pin one, but having looked on the relevant wiring diagrams, the crank sensor looks like it is inductive. Any advice very welcome

[welshpug 1,666]

yeah just plug in the standard crank sensor, no idea on the cam sensor, most don't bother with them and run wasted spark.

[Andy 105 1 Cars]

Sorry. I have not understood you. If the sensor is Hall effect, it needs a power supply from the ecu. No problem, but I need to know that. If it is inductive, then no supply needed but that leaves me unsure as to what each of the three pins is for

[petert 601]

It is indeed hall effect. Good info here:

 

http://forum.205gtidrivers.com/index.php?showtopic=169533

Edited April 23, 2017 by petert

[Andy 105 1 Cars]

Thank you .Solutuon for both sensors. The K6 supplies a stabilised 8v for the cam and crank sensors . There should be no need for any line resistor . To my shame I had forgotten that I had read that thread at some point in the past and even replied to it . A definite senior moment

Andy

[petert 601]

Haha. I know how you feel. The 100Ω resistor was used on Siemens HKZ101 sensors for current limiting, not voltage reducing. It's just what you did back in the late '80's - early '90's. I just carried over the idea, but it's unnecessary on XU10J4/RS sensors.

[Andy 105 1 Cars]

Sensor update. My crank sensor is part number 1920W9 It is inductive and is the one fitted to the XU10J4RS . Checked out the resistance between pins 1 and 2 and read 423ohms, which is about right. It is magnetic . Multimeter across pins 1 and 2 produce a pulse of around 0.2 v when I wave a piece or iron near it .

Cam sensor is a hall sensor , which is why I assume it cost quite a bit more than the crank sensor. Now I understand your post Welshpug.

Edited April 24, 2017 by Andy

[petert 601]

For your reference:

SENCSA5.pdf

[Andy 105 1 Cars]

Thank you, as always.