Camshaft Position (CMP) Sensor 2, Checking

NOTE:
- Camshaft Position (CMP) sensor -G40- is located on the front of the right cylinder head (bank 1).
- Camshaft Position (CMP) sensor 2 -G163- is located on the rear of the left cylinder head (Bank 2).
- Checking -G40-. [1][2][3]Camshaft Position (CMP) Sensor, Checking
- Component location. Locations


Required special tools and test equipment
- VAG 1598/22 test box
- Multimeter US1119 (Fluke 83 or equivalent)
- VW1594 connector test kit
- Wiring diagrams







Checking
- Disconnect 3-pin harness connector from Camshaft Position (CMP) sensor.
- Connect multimeter US1119 (Fluke 83 or equivalent) to measure voltage across CMP connector terminals 1 (B+) and 3 (Ground), using adapters from VW1594 connector test kit.
- Switch ignition on.
- Measure voltage between terminals 1 and 3.
- Specified value: 9 - 14.5 volts
- Switch ignition off.

If voltage is OK:
- Connect VAG 1598/22 test box to Motronic ECM harness connector.
- Check wiring for open circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
- Connector terminal 1 to ECM/test box socket 11
- Connector terminal 2 to ECM/test box socket 44
- Connector terminal 3 to ECM/test box socket 67
- Specified value: max. 1.5 ohms

- Check wiring for short circuit between ECM/test box and 3-pin harness connector, according to wiring diagram.
- Connector terminal 3 to ECM/test box socket 44
- Connector terminal 3 to ECM/test box socket 11
- Connector terminal 2 to ECM/test box socket 11
- Specified value: Infinity ohms

If wiring is OK (and voltage across terminals 1 and 3 is OK):
- Replace Camshaft Position (CMP) sensor.

If wiring is OK (but still no voltage across terminals 1 and 3:
- Replace Motronic ECM -J220- .
- Carry out adaptation of throttle valve control module to ECM.
- Check readiness code.
- If Diagnostic Trouble Code (DTC) memory has been erased, or ECM has been disconnected, generate new readiness code.