With Manufacturer's Scan Tool
Camshaft Position (CMP) Sensor -G40-, Checking
Special tools, test equipment and auxiliary items
- Test box VAG 1598/31
- Hand multimeter V.A.G 1526 or multimeter VAG 1715
- Adapter set V.A.G 1594
- Wiring diagram
Check conditions
- Camshaft Position (CMP) sensor attached tightly
- The battery voltage must be at least 11.5 V
Test sequence
- Pull 3-pin connector off Camshaft Position (CMP) sensor -G40- -arrow-.
- Connect multimeter to measure voltage with adapter cables from V.A.G 1594 to contacts 1 (positive) and 3 (Ground) on the Camshaft Position (CMP) sensor connector.
- Switch on ignition.
Specification: min. 4.5 V
- Switch off ignition.
If no voltage is present:
- Remove inner plenum chamber cover, left:
- Connect test box V.A.G 1598/31 to control module wiring harness. The engine control module is not connected by this action.
Check wiring for open circuit between test box and connector using wiring diagram.
- Contact 1 + socket 98
- Contact 2 + socket 86
- Contact 3 + socket 108
Wire resistance: Max. 1.5 Ohms
- Additionally check wires for short to one another.
Specification: Infinity Ohms
If no malfunctions in wiring are detected and voltage was present between contacts 1 + 3:
- Replace Camshaft Position (CMP) sensor (G40), item 7.
- Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory, checking and erasing DTC memory. Refer to "Displaying, Reading and Erasing Trouble Codes/With Manufacturers Scan Tool/DTC Memory, Checking And Erasing", Testing and Inspection
- Read-out the readiness code. If the DTC memory has been erased or the engine control module was disconnected from permanent positive, the readiness code must be generated again.
Refer to "Monitors Trips and/or Drive Cycle/Displaying Readiness Code", Testing and Inspection
Refer to "Monitors Trips and/or Drive Cycle/Generating Readiness Code", Testing and Inspection
If no malfunction in wiring is detected and no voltage was present between contacts 1 + 3:
- Replace engine control module.