Checking cruise control system (CCS): VW Golf IV / Bora (AGP, AGR, AHF, ALH, …)

🧭 Before you start

Fits: VW Golf IV / Bora (1J)

🔧 Engine codes this applies to

📐 34 workshop diagrams for AGP

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

📋 Procedure

1. Connect fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 and select engine electronics control unit with "“address word 01”". Engine must be idling. (Connecting fault reader and selecting engine electronics control unit .)
2. Press buttonss 0 and 8 for function "“Read measured value block”" and confirm entry with Q button.
3. Press buttons 0, 0 and 6 for "“Display group number 6”" and confirm entry with Q button.
4. Observe display in display zone 4.
5. Activate cruise control system

6. Perform a road test and exceed a speed of 30 km/h (approx. 19 mph) once. Then switch off engine and leave selector lever in position 2, 3 or D.
7. Pull on handbrake.
8. Press → button.
9. Press buttons 0 and 6 for function "“End output”" and confirm entry with Q button.
10. Switch off ignition.
11. Connect adapter cable, 121-pin V.A.G 1598/31 to control unit wiring harness.
12. Switch on ignition.
13. Connect multimeter to measure voltage between the following sockets of adapter cable, 121-pin V.A.G 1598/31 and measure voltage at the specified switch positions.
14. Socket 4/5 + 45 switch B to "“ON”" = 0 V switch B to "“RES”" = battery voltage
15. Socket 4/5 + 44 switch A not pressed = 0 V switch A pressed = battery voltage
16. Socket 4/5 + 14 switch B to "“OFF”" = 0 V switch B to "“ON”" = battery voltage
17. Socket 4/5 + 46 switch B to "“OFF”" = 0 V switch B to "“ON”" = battery voltage
18. Measure voltage on operating switch directly.

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