Checking cruise control system - petrol engines with electronic throttle — AUDI

🧭 Before you start

Fits: Audi A4 B5 (8D)

• Special tools named: V.A.G 1598/31

📋 Procedure

1. From list (1) select vehicle system "“01 - Engine electronics”".
2. Wait until next display appears.
3. Touch → key.
4. From list (1), select function "“08 - Reading measured value block”".
5. On the keypad (2), touch keys 66 for "“Display group 066”" and confirm the entry by touching the Q key.

6. Check display in zone (2).
7. Check display in zone (4).
8. Terminate function "“08 - Reading measured value block”" by touching ← key.
9. Unplug the connector at the cruise control system switch 94.
10. Connect the 121-pin adapter cableV.A.G 1598/31 (test box) to the unplugged multi-pin connectors of the engine control unit 24. [Note: Use is always to be made for connecting measuring instruments (e.g. voltage testerV.A.G 1527B, portable multimeterV.A.G 1526C) of the adapter setV.A.G 1594C.The contact numbers of the multi-pin connectors coincide with the socket numbers of the adapter cable V.A.G 1598/31 (test box).]
11. ⚠ To avoid damaging electronic components, select the appropriate measuring range before connecting the test leads and heed the test conditions. — Check for open circuit and short to earth or positive in the wiring .
12. Repair wiring if necessary.

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Dismantling and assembling triple roller joint AAR 3700i + AAR 4100i for drive shaft
• Removing and installing alternator, 2.5 l TDI engine without air conditioning system
• Removing and installing fuel shut-off valve control unit J366
• Renewing seal on left of gearbox
• Renewing seal on right of gearbox, front-wheel drive vehicles