◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
◆ Adapter set V.A.G 1594
◆ Current flow diagram
Test sequence
‒ →
Separate brown 3 pin connector to knock sensor 1 (G61) -1-.
‒ Additionally check, wires for short to one another between the contacts 1 + 2, 1 + 3 and 2 + 3 at connection to knock sensor.
Specification:∞ω
‒ →
Connect test box V.A.G 1598/18 to control unit wiring loom.
‒ →
Check wiring between test box and 3 pin connector to open circuit according to current flow diagram.
Contact 1 + socket 39
Contact 2 + socket 19
Contact 3 + socket 45
Wire resistance: 1.5 ω
‒ Additionally check wires for short to one another.
Contact 3 + socket 19
Contact 3 + socket 39
Contact 2 + socket 39
Specification:∞ω
If no wiring fault is detected:
‒ Loosen knock sensor and tighten again to 20 Nm.
If the fault is still present (Fault again in fault memory)