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Po341

(2000 Volkswagen Jetta)
in New Durham, NH on March 05, 2010
ihave changed cam sensor but still have code
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Popular Answer
on March 06, 2010
Camshaft Position Sensor, Checking
NoteUse only gold-plated terminals when servicing terminals in harness connector of Camshaft Position (CMP) Sensor -G40-.
Special tools and workshop equipment required
t Multimeter.
t Wiring diagram.
Test requirements
l The Motronic Engine Control Module (ECM) - J220- fuses OK.
l All electrical consumers such as, lights and rear window defroster, switched off.
l Vehicles with automatic transmission, shift selector lever into position “P” or “N”.
l A/C switched off.
l Ground (GND) connections between engine/transmission/chassis OK.
l Ignition switched off.
Test procedure
– Perform a preliminary check to verify the customers complaint. Refer to → Chapter.
Start diagnosis
– Remove the engine cover with air filter.

– Disconnect the Camshaft Position (CMP) Sensor -G40- electrical harness connector -arrow-.
– Switch the ignition on.

– Using a Multimeter, Check the Camshaft Position (CMP) Sensor -G40- electrical harness connector terminals 1 to 3 for voltage.
Specified value: about 5.0 V
– Switch the ignition off.
If the specification was not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
– Install the Adapter Cable (121-pin) -VAG1598/31-

→ Engine Mechanical, Fuel Injection and Ignition; Rep. Gr.24; Removal and Installation.
If the manufacturers test box is not being used. Perform the following step.
– Remove the Motronic Engine Control Module (ECM) -J220-. Refer to → Chapter.

– Using a Multimeter, Check the Camshaft Position (CMP) Sensor -G40- electrical harness connector to the Motronic Engine Control Module (ECM) -J220- electrical harness connector T121 for resistance.

Camshaft Position (CMP) Sensor -G40- electrical harness connector terminals Motronic Engine Control Module (ECM) -J220- electrical harness connector T121 terminals or test box sockets
1 98
2 86
3 108

Specified value: 1.5 Ω Max.
If the specified value was not obtained:
– Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
– Check the wiring connection for damage, corrosion, loose or broken terminals.
– If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and voltage supply was OK:
– Replace the Camshaft Position (CMP) Sensor -G40-.
– Erase the DTC memory. Refer to → Chapter.
– Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. Refer to → Chapter.
– End of diagnosis.
If the DTC does return and no malfunction is detected in the wiring and the voltage supply was not OK:
– Replace the Motronic Engine Control Module (ECM) -J220-. Refer to → Chapter.
– Assembly is performed in the reverse of the removal.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1 - Check the DTC memory → Chapter.
2 - If necessary, erase the DTC memory → Chapter.
3 - If the DTC memory was erased, generate readiness code → Chapter.

on January 09, 2012
i have changed cam sensor & code still there
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