For those who have built their motors, please tell me the cam sprockets are the same.
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This place is a joke.
You can also test resistance through the sensor itself to see if, in fact it's shorted internally. You can compare it to the one on your car to see what it's supposed to be (between pins 2 and 3 on the sensor)
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2005 E55 AMG
OK I have a real keyboard now. I edited my posts. According to the wiring diagram (not always right BTW) You should have battery voltage (12+v) at the red wire, which is a wire also shared with injectors 5-8.
So unplugged, it appears OK, you have the 12v source on the red wire,the 5v in the pink is likely feedback voltage from the ECU, and hopefully you checked resistence through the ground wire.
The concern is the 13v (battery voltage) at the pink wire plugged in, which, according to MB should be 1.2 to 1.7v, of course this info is not always correct. But, what you are looking at is the pulse signal coming out of the sensor. Without a scope to see the pattern, your meter (should be) displaying the voltage of the high and low peaks. Since you are showing 13v at both wires, this would indicate the sensor is shorted internally...which is what the code says right? You said you changed the sensor, was it a brand new one? And just to be sure, did you do this test with the engine at idle, meaning the one test backprobing the pink wire, and the - of the meter to ground?
Another option is to do the same test on your E55 to compare readings. I would think the sensor wires are the same. Just remember you may set a CEL on your E55 with the sensor unplugged and key "ON"
So unplugged, it appears OK, you have the 12v source on the red wire,the 5v in the pink is likely feedback voltage from the ECU, and hopefully you checked resistence through the ground wire.
The concern is the 13v (battery voltage) at the pink wire plugged in, which, according to MB should be 1.2 to 1.7v, of course this info is not always correct. But, what you are looking at is the pulse signal coming out of the sensor. Without a scope to see the pattern, your meter (should be) displaying the voltage of the high and low peaks. Since you are showing 13v at both wires, this would indicate the sensor is shorted internally...which is what the code says right? You said you changed the sensor, was it a brand new one? And just to be sure, did you do this test with the engine at idle, meaning the one test backprobing the pink wire, and the - of the meter to ground?
Another option is to do the same test on your E55 to compare readings. I would think the sensor wires are the same. Just remember you may set a CEL on your E55 with the sensor unplugged and key "ON"
MBWorld Fanatic!
Joined: Jul 2012
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From: Orbiting the planet
This place is a joke.
255 may be a default value- meaning that's the reading when the sensor is unplugged, or not working. That number just rings a bell to me. Just looked, and ya the sensor is hard to get to on our engines.
Last edited by E55Greasemonkey; Jan 4, 2013 at 11:14 PM.
