With Manufacturer's Scan Tool

Signal From Clutch Pedal Switch, Checking

Special tools and equipment
- V.A.G 1551 scan tool or 1552 scan tool with cable VAG 1551/3
- Test box VAG 1598/31
- Hand multimeter VAG 1526 or multimeter VAG 1715
- Adapter set VAG 1594
- Wiring diagram

Check conditions






- All fuses must be OK.
- The battery voltage must be at least 11.5 V.
- All electrical consumers, e.g. lights and rear window heating must be switched off

Test sequence
- Connect the V.A.G 1551 scan tool ((VAG 1552). Then switch ignition on and select engine control module with the "Address word" 01. [1][2]Reading and Clearing Diagnostic Trouble Codes

Indicated on display:

Rapid data transfer HELP
select function XX

- Press keys 0 and 8 for the function "Read measuring value block" and confirm entry with Q key.

Indicated on display:

Read measuring 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:

Read measuring value block 66 ->
1 2 3 4

- Observe values displayed in display zone 2 (2nd digit from left).
Specification: x 0 x x

- Depress clutch pedal fully and observe values in display zone 2.
Specification: x 1 x x

- Press the -> key.
- Press keys 0 and 6 for the "End output" function and confirm input with the Q key.
- Switch off ignition.

If the specification is not obtained:

- Remove shelf on driver's side:
- Pull the connector off the clutch pedal switch.






- Connect multimeter to measure resistance between contacts 1 and 2.
Specification: approx. 0 Ohms

- Depress the clutch pedal.
Specification: Infinity Ohms (no continuity)

If the specification is not attained:
- Replace clutch pedal switch.

NOTE: Observe installation position of clutch pedal switch in bearing bracket upper assembly hole.

- Check DTC memory, if necessary, repair any faults and then erase DTC memory, checking and erasing DTC memory.
Reading Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes

If the specification is obtained:






- Connect multimeter using aux. cables from VAG 1594 to measure voltage between contact 1 and Ground. Then switch ignition on.
Specification: At least 11.5 V

If the specification is not attained:
- Check wiring between 2-pin connector contact 1 and fuse holder using wiring diagram.

If the specification is obtained:
- Remove wiper arms and cowl panel






- Connect test box VAG 1598/31 to control module wiring harness. The engine control module remains disconnected.






- Check wiring for open circuit between test box and 2-pin connector using wiring diagram.
Contact 2+socket 39
Wire resistance: Max. 1.5 Ohms

- Additionally check wires for short to one another.
- Additionally check the wiring for short to battery positive or Ground.

If no fault is detected in the pipes:
- Replace engine control module.