Condition for fault identification

Test condition:

The fault is recognized when the actual angle assumes the specified angle too slowly while the engine is running.

Potential problem source(s):

• Contaminated oil passage at VANOS solenoid valve
• Oil pressure too low
• Defective wires or plug terminals on VANOS solenoid valve
• VANOS solenoid valve seized
• VANOS solenoid valve defective

Terminal condition: none

Voltage condition:

• Onboard electrical system voltage between 9 V and 16 V

Temperature condition:

• Engine warmed to normal temp, above 80 °C

Time condition:

• None

Other conditions:

• Engine on
• Specified/actual angle difference exceeds 15° crankshaft