Have you done any CCM wiring checks under the carpet? We seem to be chasing a good bit of electrical, but when other systems in the car are acting up, they all could be related to a single root cause.Yes, the tach goes up to about 300-500 rpm when starter cranks. I'm committed to changing the sensor anyway...when I can get the old one out!!...Fuel pump relay clicks when key turned. Telltale bulb attached to harness going to fuel pump 'lights up' when key turned to ON/starter engaged. Another funky symptom is that I lost my window up and down function for two days but it mysteriously re-appeared.
The speedo works without a signal from the ESS, but the tacho does not.Ive had the speedo move and still had a bad sensor. What was the ohm measurement on the CPS? You are measureing pins 2 and 3 on the sensor itself not the harness right? Id recommend a Genuine VW/Audi or atleast a OEM brand sensor like bosch/hella. The cheap sensors can sometimes only last a couple months or even less. Even the OE ones go out more often then they should. I actually keep a spare in my car.
He does have a problem with the CCM system, but it is not preventing starting.Have you done any CCM wiring checks under the carpet? We seem to be chasing a good bit of electrical, but when other systems in the car are acting up, they all could be related to a single root cause.
use the code tags to format it in code
put VCDS stuff here
Cabin interior is dry...not damp at all...though I do see signs of previous dampness...I'll uncover and report back on the CCM...Uncovered the ECU yesterday and all looked okay.use the code tags to format it in code
I believe your Passat doesn't have a CECM like the Audi cousin, so it isn't that that is shot, but I'm guessing the CCCM under the driver's feet.Code:
put VCDS stuff here
Check your plenum drains so that you aren't putting more water into the car. also check the seal/gasket under the ECU. won't dry it out if you keep dumping water into it.
my guess is your CCCM is wet as fuck and needs to be replaced.
Also if you are getting water in via the gasket under the ECU, a lot of your relays are probably messed up and corroded.
how wet is the are around the dead pedal?
Sure, but that does nothing to stop the water going behind the dead pedal or down the a-pillar....its not from your shoes/boots... it's from the road spray on the windshield that goes in the plenum then into the cabin, not down the plugged plenum drains.I had prevented this, from happenig long time ago by using thick rubber mats on the floor.
Started with battery at 12.53 v...The no start issue is not caused by the ESS or the CCM. I suggest you forget about these until you have it running.
Check the voltage at fuse #28 while cranking.
(During this test, the fuse must be connected and the engine must be turning.)