Clutch Vacuum Vent Valve Switch -F36-
Clutch Vacuum Vent Valve Switch -F36-, Checking
Special Tools and Equipment
- VAG1526A
- VAG1527B
- VAG1594A
- VAG1598/31
- VAS5051 with VAG5051/1
or
- VAG1551 with VAG1551/3B
NOTE: This signal helps prevent excessive RPM oscillations and tip-in shocks when clutch is disengaged and is required for the cruise control system.
Test sequence
- Connect VAS5O51 tester or VAG1551 scan tool and select the control module for engine electronics using "address word" 01. Refer to "Scan Tool Testing/Scan Tool Connecting And Initial Checks" Testing and Inspection
Ignition must remain switched on for this.
When indicated on display:
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -8- to select "Read Measuring Value Block" and press -Q- button to confirm input.
When indicated on display:
Read Measuring Value Block Q
Input display group number XXX
- Press buttons -0-1-6- and -6- to select "display group number 066" and press -Q- button to confirm input.
Indicated on display:
Read Measuring Value Block 66 ->
1 2 3 4
- Check Clutch Pedal Position (CPP) switch in display field 2.
If indications do not resemble description:
Check switch
- Remove driver-side storage compartment.
- Disconnect harness connector at Clutch Pedal Position (CPP) switch.
NOTE: Connector sockets are marked on the back side of the connector.
- Connect multimeter between terminal 1 and 2 for resistance measurement.
- Specification: approx. Infinity Ohms
- Depress clutch pedal.
- Specification: Infinity Ohms (no continuity)
If specified value is not obtained:
- Check adjustment of switch or
- Replace Clutch Pedal Position (CPP) switch.
If specified value is obtained:
Checking voltage supply
- Connect VAG1527B voltage tester as follows:
Harness connector Terminal Measure to
1 Chassis Ground (GND)
- Switch ignition on.
- LED must light up.
If LED does not light up:
- Check wire connection from terminal 1 of connector to fuse for open circuit and short circuit to Ground (GND).
If LED lights up:
Checking activation
- Connect VAG1598/31 test box at wiring harness to ECM, do not connect ECM. Refer to "Scan Tool Testing/Wire And Component Test Using VAG1598/31 Test Box", Testing and Inspection
- Check the following wire connection for open circuit and short circuit to Ground (GND) and B+:
Harness connector Terminal VAG1598/31 test box Socket
2 39
- Repair open circuit or short circuit if necessary.