Camshaft Adjustment Valve, Checking
Valve 1 For Camshaft Adjustment, Checking (Vehicles With Engine Code AWP, AWV, BKF, BNU)
Function
The camshaft adjustment is load- and RPM dependant. The electrical valve for camshaft adjustment switches oil pressure onto camshaft adjuster (mechanical adjustment mechanism), which adjusts the camshaft.
Recommended special tools and equipment
- V.A.G 1526 multimeter or V.A.G 1715 multimeter
- V.A.G 1594 connector test kit
- Wiring diagram
Test requirements
- The respective fuses of the Valve -1 - for camshaft adjustment -N205- must be OK.
- Fuel Pump (FP) Relay -J17- must be OK, check:
- Ground (GND) connections between engine and chassis must be OK.
- Ignition switched off.
Test sequence
- Disconnect 2-pin harness connector to Camshaft Adjustment Valve 1 -N205-.
Checking resistance
- Check resistance between terminals of valve 1 for camshaft adjustment.
Specified value: 10,0 to 18.0 Ohms
If specified value is not obtained:
- Replace Valve -1- for camshaft adjustment -N205-. item. 10.
- Erase DTC memory of Engine Control Module (ECM). [1][2]Reading and Clearing Diagnostic Trouble Codes
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
If specified value is obtained:
- Check wires to control module according to wiring diagram.
Check wires to control module
- Connect test box to control module wiring harness. connect test box for wiring test.
- Check wires between test box and 2-pin connector to Engine Control Module (ECM) for open circuit according to wiring diagram.
Terminal 2 + socket 115
Wire resistance: max. 1.5 Ohms
- Check the wire for short circuit to B+ and Ground (GND).
Specified value: Infinite Ohms
- Check wire between 2-pin connector terminal 1 and the Fuel Pump (FP) Relay -J17- for open circuit according to wiring diagram.
Wire resistance: max. 1.5 Ohms
- Erase DTC memory of Engine Control Module (ECM). [1][2]Reading and Clearing Diagnostic Trouble Codes
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes
If no malfunctions are found in wires:
- Replace Motronic Engine Control Module (ECM) -J220-.