With Manufacturer's Scan Tool
Cruise Control System (CCS), Checking
Special tools and equipment 1
- V.A.G1551 scan tool or V.A.G1552 mobile scan tool with V.A.G1551/3B cable
- V.A.G1598/31 test box
- V.A.G1526 or Fluke 83 multimeter
- V.A.G1594 adapter set
- Wiring diagram
Check conditions
- All fuses must be OK.
- Battery voltage must be at least 11.5 V.
Test sequence
- Connect V.A.G1551 scan tool (V.A.G1552). Switch ignition on and select engine control module with "Address word" 01. (Connecting scan tool and selecting engine control module. [1][2][3]Connecting VAG 1551 Scan Tool)
Indicated on display
Rapid data transfer HELP
Select function XX
- Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.
Indicated on display
Read measured value block
Input display group number XXX
- Press keys 0, 6 and 6 for "display group 66" and confirm with Q key.
Indicated on display: (1 to 4 = Display zones)
Read measured value block 66
1 2 3 4
- Check in display zone 2 if CCS is activated:
Specification: x x x x 1 x x x
If the specification is not obtained:
- Press -> key.
- Press keys 0 and 6 for "End output" function and confirm input with Q key.
- Activate Cruise Control System.
If the specification is obtained:
- Check specification for switch position from CCS operating switch in display zone 4 (last 4 digits).
Check prerequisites Display zone 4
Switch B in detent at "OFF" 0001
Switch B not in detent at "OFF" 0000
Switch B at "ON" 0011
Switch B at "RES" 1011
Switch A pressed 0111
(Switch B at "ON")
If the specifications are not obtained:
- Press -> key.
- Press keys 0 and 6 for "End output" function and confirm input with Q key.
- Switch ignition off.
- Connect V.A.G1598/31 test box to control module wiring harness. Engine control module remains disconnected.
- Check wiring from engine control module to CCS operating switch for open/short circuits.
- Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory. DTC Memory, Checking and Erasing (Functions 02 and 05)
- Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must be generated again.
Monitors, Trips, Drive Cycles and Readiness Codes
Monitors, Trips, Drive Cycles and Readiness Codes