Mercedes-Benz Forum banner

21 - 22 of 22 Posts

·
Registered
Joined
·
2 Posts
Yes, there are two crankshaft position (CKP) sensors.

The one at the back of the block (behind the oil filter) is the one used by the ignition system. It has a coaxial cable that runs the whole length of the engine wiring trough and then goes to the EZL module on the fender ahead of the strut tower. This sensor has a coaxial plug at the EZL module, kind of like a big RCA connector.

If this CKP sensor fails the engine will not start or run. If the engine is already running and the sensor dies the engine will quit.

The other CKP sensor is referred to as the TDC sensor because that is the only info it provides. It bolts to the timing cover and is exclusively for diagnostic purposes. Its wiring runs straight to the round X11 connector near the EZL module.

IIRC the wiring for the TDC sensor ends in an oblong or kidney-shaped 2-terminal plug that slides into a recess in the underside of X11.
Yes, there are two crankshaft position (CKP) sensors.

The one at the back of the block (behind the oil filter) is the one used by the ignition system. It has a coaxial cable that runs the whole length of the engine wiring trough and then goes to the EZL module on the fender ahead of the strut tower. This sensor has a coaxial plug at the EZL module, kind of like a big RCA connector.

If this CKP sensor fails the engine will not start or run. If the engine is already running and the sensor dies the engine will quit.

The other CKP sensor is referred to as the TDC sensor because that is the only info it provides. It bolts to the timing cover and is exclusively for diagnostic purposes. Its wiring runs straight to the round X11 connector near the EZL module.

IIRC the wiring for the TDC sensor ends in an oblong or kidney-shaped 2-terminal plug that slides into a recess in the underside of X11.
thks from lkhnsf june 27 2020 check tomorrow sunday
 
21 - 22 of 22 Posts
Top