Go Back   AudiWorld Forums > Audi Models > Audi Original "S" Cars
Sign in using an external account
Register Forgot Password?

Audi Original "S" Cars Discussion forum for the Audi Audi Ur S4, Ur S6, S2 & RS2

Cam position sensor location photo and diagram

LinkBack Thread Tools Search this Thread Display Modes
Old 07-15-2006, 05:43 PM   #1
AudiWorld Super User
Account #: 15624
UrS4boy's Avatar
Join Date: Feb 2001
Posts: 18,600
Default Cam position sensor location photo and diagram

The Cam Position Sensor is used by the ECU (Engine Control Unit, i.e. the Motronic Computer) to figure out where the pistons are early in the starting cycle rather than waiting for the G4 crank position sensor to come around. If the ECU does not get a cam position sensor signal, it will not fire the J17 fuel pump relay. Once the engine is running, the ECU will use the G4 crank sensor position sensor to keep track of things. If the cam sensor fails, a "2113" blink code will be thrown (into memory) and check engine light will come on. If it fails while running, you can keep driving but as soon as you turn the engine off, you are done. The engine will NOT re-fire until you fix the cam sensor. You might get lucky once or twice by cooling the cam sender down (try poring water down the back of the cam belt cover) Location photo and diagrams in the URL links below.

Marc S. recently (March 09) added:
"that if your CPS has failed (or is on the way out) and you need a way to drive the car disconnect the 3 pin connector at the CPS (front of the fuel rail) and shove a piece of wire or a paperclip or whatever between pins 2 and 3 (you can read the pin numbers by pulling back the rubber boot) on the car-harness end, leaving the sensor itself disconnected.

I had posted about this earlier but mistakenly suggested that you hold the signal pin up at 5v (pin 1), but in fact it needs to be held to ground (pin 3). Just came across this with a customer and thought I'd share / correct my early post.

Note: by doing this you have a 50% chance of starting the car. If it doesn't start right up, stop, try again. repeat. Probability has it that you'll get it fired up after 3 or 4 tries max, but I suppose it depends on how unlucky you are "

This might come in handy sometime.
Naturally, IMHHEO(tm),
Dave F. aka the Librarian
Car and Mods:
93 S4, 1.8t coil pack conversion (First in world using integral POS coil packs (??)), CF (OE), S6 steering wheel, RS2'd, Samcos, MRC, TDS-1, Apikol FMIC, Eibach/Bilstein, BIRA Sys 1, relayed FP
Click here to link to the UrS FAQ Thread Start
Uncle Dave says "You want my 'high horse, elitist' opinion ?(IMHHEO(tm))Then just post something stupid."
Unofficial Chief Cat-herder Vancouver UrS-car club
UrS4boy is offline   Reply With Quote
Old 07-15-2006, 05:43 PM
Audi R8

Paid Advertisement

18t, audi, cam, cams, camshaft, car, diagram, diagrams, location, photo, photos, position, postion, s4, sensor, v6

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Join AudiWorld

All times are GMT -8. The time now is 02:24 PM.

Copyright 2014 AudiWorld.com Audi Enthusiast Community