brianstrange
Veteran Member
For the record, I have the BRM Motor
Dan, thanks for the values. I will compare them with mine tomorrow. My sense is that the BEW & BRM harness are pretty similar. I will pull out my a4 Bentley & compare it to my A5.DanG144 said:sensor Pin 1 to 2 or 2 to 1 is 561 ohms
Sensor pin 1 or 2 to 3 is more than 6 Megohms
With the ECM end still hooked up the cable to the sensor gives:
Key ON
pin 1, 2.5 vdc
Pin 2, 2.5 vdc
pin 3, 0.0 vdc
Key off
pin 1+ to ground -, gives 53.26 k ohms
pin 2+ to ground -, gives 53.26 k ohms
pin 3+ to ground -, gives 0 ohms
I can see no external ground wire from the head.
Pin 3 of the crank engine speed sensor is shown as going to a ground, and the resistance measurement I took shows that it very likely does. I do not know where the ground is located.
Drawing series 81/5 is apparently in error in at least one respect: it shows wire 2 connected to wire 3 (between the plug and the ECM) at wiring connection 200 (but, unusually, does not indicate where wire connection 200 is). My wire 2 and 3 are definitely not connected, as the resistance measurements above show. I suspect that someone saw that wire 3 goes to the shield on wire 2 (which is also shown on the wiring diagram.) and thought it was the center conductor. The drawing in my Bentley and my erWin copy of the drawing show the same thing.
On my BEW, with the sensor unplugged, VCDS still assigned an RPM to the G28 field. But mine would not run.Bob S. said:I do suspect that the ESS is outputting as Vagcom is assigning output from the G28 sensor. But, the tach is at zero after the start. The tach does register @ cranking, then drops to zero, almost immediately followed be the engine start. I am confused if it is the sensors finding ground or the ECU picking up the Cam Sensor.
The 000801 / P0321 was the initial code that after the jiggle went to the 000802 / P0322. It has remained solid at the latter code since.
I was hoping that was not the case, but you may be correct. I was also beginning to think along the same lines that the intermittent connection finally went.DanG144 said:On my BEW, with the sensor unplugged, VCDS still assigned an RPM to the G28 field. But mine would not run.
Rich,fixumrich said:Bob I'm just finishing a filter service on 06 jetta brm .. I did some test's for you. I'll have the info up soon .. Rich !
Joe,joetdi said:Dan, both cars I had this trouble with were BRM engines FWIW and IIRC I have reason to believe that the S/W versionof the ECM has something to do with weather or not the engine will start without a CSS signal.
Bob S. said:Dan; I stand corrected. I wonder if Jeff could modify the BEW program so that it will run w/o the crank sensor as does the BRM.
When I spoke to the engineer in AH I asked him the same thing when I found my first one and he said it would be a rare problem. They made me replace the harness so they could see the issue with the old one. They also had me route it differently. Their belief was the harness was to short and with the engine rocking caused the problem. It has been almost a year since the first problem car I'd seen. I found only one other thread with this issue and I don't know what he found, so maybe it is rare. It would be nice to have the fail safe mode being it has the two sensors. At least the car would not have to be towed.
Don't hold your breathbrianstrange said:VW should step in on this one. The injector wires could cause a fire for sure.
Don't mind this person.^^^^^^^^^^^^^^^^^He lost a bet with me as to when this problem would come up on this site. Sorrymypassat said:Guys, on the one car that I fixed, after repairing wires I used very small ty raps every inch or so. The has been in the shop several times and I always check it. It appears to be ok so far. It appeared to me that the rocking of the engine was the major factor. I also did the best I could to give it more slack in the harness. This is joetdi's brother. He tell me everything. Ha HA