Checking Cruise Control System (CCS)

Special tools and equipment
- VAG1551 Scan Tool (ST) or VAG1552 mobile scan tool with VAG1551/3 adapter cable
- VAG1598/22 test box
- Multimeter (Fluke 83 or equivalent)
- VW1594 adapter set
- Wiring diagram

Test requirements







- Fuses 5, 10 and 29 OK
- Battery (B+) voltage at least 11.5 V

Test sequence
- Connect VAG1551 (VAG1552) Scan Tool (ST).
- Switch ignition on and press buttons -0- and -1- to insert "Engine Electronics" address word 01.

Indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.

Indicated on display


Read Measuring Value Block
Input display group number XXX


- Press buttons -0-, -6- and -6- to input display group number 66 (066) and press -Q- button to confirm input.

Indicated on display: (1-4 = display fields)


Read Measuring Value Block ->
1 2 3 4


Vehicle with automatic transmission only:
- Perform road test and exceed speed of 25 km/h (approx. 16 mph) once.
Then switch engine off and leave selector level in position 2, 3 or D.
Observe the safety measures during a road test.

NOTE: On vehicles with an automatic transmission, the CCS switch will not be supplied with voltage until the vehicle speed exceeds 25 km/h (approx. 16 mph) and the selector lever is in position 2, 3 or D. Once the switch has been supplied with voltage it will also remain live at idle speed provided a driving range (except 1 or R) is selected.







- Check specified value for switch position from CCS operating switch in display field 4.







If the specified values are not obtained:
- Press -> button.
- Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
- Switch ignition off.
- Remove wiper arms and plenum chamber cover.







- Connect VAG1598/31 test box to Engine Control Module (ECM) wiring harness. Engine Control Module (ECM) is not connected by this action.
- Check wiring from Engine Control Module (ECM) to CCS operating switch for open or short circuits:
- Check DTC memory. If necessary, repair any malfunctions and erase DTC memory.
- Display readiness code.

If DTC memory has been erased or the Engine Control Module (ECM) was disconnected from permanent battery (B+) voltage, the readiness code must be generated again.