Clutch Pedal Switch Signal, Checking

Signal From Clutch Pedal Position Switch, Checking

Special tools and equipment
- Scan tool VAG 1551 or vehicle system tester V.A.G 1552 with cable VAG 1551/3B
- Test box V.A.G 1598/31
- Hand multi meter V.A.G 1526 or multimeter VAG 1715
- Adapter set V.A.G 1594
- Wiring diagram

Test 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 scan tool VAG 1551 (V.A.G 1552). Switch ignition on and select engine control module with "Address word" 01.
Connecting scan tool and selecting Engine Control Module (ECM). Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/VAG1551 Scan Tool" Testing and Inspection

Indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons 0 and 8 for function "Read Measuring Value Block" and confirm entry with Q button.

Indicated on display


Read Measuring Value Block
Input display group number XXX


- Press buttons 0, 6 and 6 for "display group 66" and confirm with Q button.

Indicated on display (1-4 = Display zones)


Read Measuring Value Block 66 ->
1 2 3 4


- Observe display in display zone 2 (2nd digit from left).
Specification: x 0 x x
- Depress clutch pedal fully and observe display in display zone 2.
Specification: x 1 x x
- Press -> button.
- Press buttons 0 and 6 for "End output" function and confirm input with Q button.
- Switch ignition off.

If the display does not change:
- Remove driver's storage compartment:
- Disconnect 2-pin connector off clutch pedal position switch.







- Measure resistance between switch terminals 1 and 2. Specification:
- Clutch not depressed: max. 1.5 Ohms
- Clutch depressed: Infinity Ohms (no continuity)

If the specifications are not obtained:
- Replace clutch pedal position switch (F36).


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


- Check DTC memory, if necessary, repair any malfunctions and then erase DTC memory. Refer to "Displaying and Reading Trouble Codes/With Manufacturers Scan Tool/DTC Memory Checking and Erasing" Testing and Inspection
- Read readiness code. If DTC memory has been erased or engine control module was disconnected from permanent positive, readiness code must be generated again.
Refer to "Monitors, Trips and/or Drive Cycle/Readiness Code, Displaying" Testing and Inspection
Refer to "Monitors, Trips and/or Drive Cycle/Readiness Code, Generating" Testing and Inspection


If the specifications are obtained:







- Connect multimeter using auxiliary cables from V.A.G 1594 to measure voltage between terminal 1 and Ground.
- Switch ignition on.
Specification: min. 11.5 V

If the specification is not attained:
- Check wiring for open circuit between 2-pin connector terminal 1 and central electrics using wiring diagram.

If the specification is obtained:
- Remove inner plenum chamber cover, left:







- Connect test box V.A.G 1598/31 to control module wiring harness. Engine control module is not connected by this action.







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

If the specification is obtained:
- Check wires for short to one another.
- Additionally check wiring for short to battery positive or Ground.

If no wiring problem is detected:
- Replace Engine Control Module (ECM).