Checking Hall sender G163: Audi TT Mk1 1.8 (ARY, AUM, AUQ, BVP, …)

🧭 Before you start

Fits: Audi TT Mk1 (8N)

• Special tools named: V.A.G 1598/31
• Renewed: hall sender

Don't miss

• The connector contacts are numbered accordingly on the back of the connector.
• Voltage testers with a low current draw do not go out completely between activation signals from engine control unit, but continue to glow slightly and become distinctly brighter on activation.
• Connect adapter cable, 121-pin V.A.G 1598/31 (test box) to wiring harness for engine control unit, but do not connect the engine control unit itself .
• Unbolt Hall sender, then check to ensure that the rotor ring is correctly aligned on the camshaft. If incorrectly installed, the catch will be pressed flat when the securing screw is tightened.

🔧 Engine codes this applies to

📐 38 workshop diagrams for ARY

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. If fitted, push back rubber grommet at connector for Hall sender, but leave connector plugged in.
2. Connect voltage testerV.A.G 1527 B between contact (2) (Hall sender signal) and contact (1) (positive). [Note: The connector contacts are numbered accordingly on the back of the connector.]
3. Operate starter for a few seconds. [Note: Voltage testers with a low current draw do not go out completely between activation signals from engine control unit, but continue to glow slightly and become distinctly brighter on activation.]
4. Check power supply, signal wire and earth wire as described in the following.
5. Unplug electrical connector at Hall sender.

6. Connect multimeter (voltage measuring range) between contact (1) of connector and earth.
7. Switch on ignition.
8. Connect multimeter (voltage measuring range) between contact (2) of connector and earth.
9. Switch on ignition.
10. Check for open circuit and short to positive in wiring between contact (3) of connector and earth.
11. Repair wiring connection if necessary.
12. Renew Hall sender.
13. Check wiring between Hall sender and engine control unit.
14. Connect adapter cable, 121-pin V.A.G 1598/31 (test box) to wiring harness for engine control unit, but do not connect the engine control unit itself .
15. Check for open circuit and short to positive or earth in the following wiring:
16. Repair wiring connection if necessary.
17. Unbolt Hall sender, then check to ensure that the rotor ring is correctly aligned on the camshaft. If incorrectly installed, the catch will be pressed flat when the securing screw is tightened.
18. If the rotor ring is correctly aligned, check the position of the camshaft in relation to the crankshaft 15.

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