Test table (test steps 1 - 16)

WARNING: This page is about a different variant/trim than selected.

Test steps 17 - 23. Refer to Test table (test steps 17 - 23)

Note on test table

The socket designations of adapter V.A.G 1598/33 are identical to the ABS control module (w/EDL) -J104- contact designations in wiring diagram.

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder

If the readings obtained deviate from the specifications, carry out repair measure in the right-hand part of the table.

Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder

Continuity checks with adapter set V.A.G 1594 A (bridging).
If the measured figures only deviate slightly from the specifications, clean sockets and plugs of the testers and adapter cables (with contact spray G 000 700 04 ) and repeat check. Before replacing components, check wiring and connections and also, particularly for specifications of less than 10 Ω , repeat resistance check on the component.

Switch to measuring range: Voltage measurement (20 V =)
Test step	V.A.G 1598 sockets	Item tested	Test conditions Additional operations	Specification	Measures for deviations from specification
1	1 + 47	Voltage supply for ABS hydraulic pump -V64- to ABS Control Module (w/EDL) -J104-	Ignition switched off	10.0 - 14.5 V	Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
2	32 + 16	Voltage supply for the valves in ABS hydraulic unit -N55- to ABS Control Module (w/EDL) -J104-	Ignition switched off	10.0 - 14.5 V	Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder

Switch to measuring range: Voltage measurement (20 V =)
Test step	V.A.G 1598 sockets	Item tested	Test conditions Additional operations	Specification	Measures for deviations from specification
3	4 + 47	Voltage supply (ignition/starter switch) to ABS Control Module (w/EDL) -J104-	Ignition switched on	10.0 - 14.5 V	Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
4	47 + 41	Function of brake light switch -F-	Ignition switched off Brake pedal not depressed	0.0 - 0.5 V	Check brake light switch -F- and read measured value block. Refer to Measured value block, reading , Display group number 003
			Depress brake pedal	Approx. battery voltage	Adjusting brake light switch. Refer to 46 BRAKES - MECHANICAL COMPONENTS ; Brake pedal - Assembly overview; Adjusting brake light switch Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder

Switch to measuring range:
Resistance measurement (2 k Ω )

Test step

V.A.G 1598 sockets

Item tested

Test conditions

Additional operations

Specification

Measures for deviations from specification

33 + 34

Resistance of right front ABS wheel speed sensor -G45-

Ignition switched off

1.0 - 1.3 k Ω

Check wiring using wiring diagram
Wiggle wiring during test. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
If no malfunction can be located in the wiring:
- Replace right front ABS wheel speed sensor -G45-. Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ABS system on front and rear axles

Switch to measuring range:
Resistance measurement (2 k Ω )

Test step

V.A.G 1598 sockets

Item tested

Test conditions

Additional operations

Specification

Measures for deviations from specification

45 + 46

Resistance of left front ABS wheel speed sensor -G47-

Ignition switched off

1.0 - 1.3 k Ω

Check wiring using wiring diagram
Wiggle wiring during test. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
If no malfunction can be located in the wiring:
- Replace left front ABS wheel speed sensor -G47-. Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ABS system on front and rear axles

Switch to measuring range:
Resistance measurement (2 k Ω )

Test step

V.A.G 1598 sockets

Item tested

Test conditions

Additional operations

Specification

Measures for deviations from specification

42 + 43

Resistance of right rear ABS wheel speed sensor -G44-

Ignition switched off

1.0 - 1.3 k Ω

Check wiring using wiring diagram
Wiggle wiring during test. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
If no malfunction can be located in the wiring:
- Replace right rear ABS wheel speed sensor -G44-. Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ABS system on front and rear axles

Switch to measuring range:
Resistance measurement (2 k Ω )

Test step

V.A.G 1598 sockets

Item tested

Test conditions

Additional operations

Specification

Measures for deviations from specification

37 + 36

Resistance of left rear ABS wheel speed sensor -G46-

Ignition switched off

1.0 - 1.3 k Ω

Check wiring using wiring diagram
Wiggle wiring during test. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
If no malfunction can be located in the wiring:
- Replace left rear ABS wheel speed sensor -G46-. Refer to 45 ANTI-LOCK BRAKE SYSTEM ; Removing and installing parts of ABS system on front and rear axles

Switch to measuring range: Voltage measurement (2 V ≈ )
Test step	V.A.G 1598 sockets	Item tested	Test conditions Additional operations	Specification	Measures for deviations from specification
9	33 + 34	Right front ABS wheel speed sensor -G45- voltage signal	Vehicle raised		Check installation of right front ABS wheel speed sensor -G45- and rotor.
			Ignition switched off
			Rotate front right wheel at approx. 1 rev./sec.	Min. 65 mV alternating voltage	Check whether right front ABS wheel speed sensor -G45- has been interchanged and read measured value block. Refer to Measured value block, reading , Display group number 001
10	45 + 46	Left front ABS wheel speed sensor -G47- voltage signal	Vehicle raised		Check installation of left front ABS wheel speed sensor -G47- and rotor.
			Ignition switched off
			Rotate front left wheel at approx. 1 rev./sec.	Min. 65 mV alternating voltage	Check whether left front ABS wheel speed sensor -G47- has been interchanged and read measured value block. Refer to Measured value block, reading , display group number 001

Switch to measuring range: Voltage measurement (2 V ≈ )
Test step	V.A.G 1598 sockets	Item tested	Test conditions Additional operations	Specification	Measures for deviations from specification
11	42 + 43	Right rear ABS wheel speed sensor -G44- voltage signal	Vehicle raised		Check installation of right rear ABS wheel speed sensor -G44- and rotor.
			Ignition switched off
			Rotate rear right wheel at approx. 1 rev./sec.	Min. 190 mV alternating voltage	Check whether right rear ABS wheel speed sensor -G44- has been interchanged and read measured value block. Refer to Measured value block, reading , Display group number 001
12	37 + 36	Left rear ABS wheel speed sensor -G46- voltage signal	Vehicle raised		Check installation of left rear ABS wheel speed sensor -G46- and rotor.
			Ignition switched off
			Rotate rear left wheel at approx. 1 rev./sec.	Min. 190 mV alternating voltage	Check whether left rear ABS wheel speed sensor -G46- has been interchanged and read measured value block. Refer to Measured value block, reading , Display group number 001

Functional check: ABS warning light -K47-

Test step

V.A.G 1598 sockets

Item tested

Test conditions

Additional operations

Specification

Measures for deviations from specification

Function of ABS warning light -K47-

Ignition switched on

Switch on ignition

The ABS warning light -K47- lights up for approx. 2 seconds and goes out again

Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
- Malfunction in instrument cluster. Refer to 70 - INTERIOR TRIM ; instrument panel

Functional check: Warning light for brake system -K118-
Test step	V.A.G 1598 sockets	Item tested	Test conditions Additional operations	Specification	Measures for deviations from specification
14	-	Function of warning light for brake system -K118-	Parking brake not applied Brake fluid level OK Ignition switched on	Warning light for brake system -K118- does not light up
			Apply parking brake	Warning light for brake system -K118- lights up	Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder Malfunction in instrument cluster. Refer to 70 - INTERIOR TRIM ; instrument panel

Functional check: ESP Control Lamp -K155-

Test step

V.A.G 1598 sockets

Item tested

Test conditions

Additional operations

Specification

Measures for deviations from specification

Function of ESP control lamp -K155-

Ignition switched on

Switch ignition on

ESP control lamp -K155- lights up for 2 seconds and goes out again

Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
- Malfunction in instrument cluster. Refer to 70 - INTERIOR TRIM ; instrument panel

Functional check: warning lamp for ASR/ESP button -E256-
Test step	V.A.G 1598 sockets	Item tested	Test conditions Additional operations	Specification	Measures for deviations from specification
16	-	Function of ASR/ESP button -E256-	Ignition switched on The function of the ESP Control Lamp -K155- was checked in test step 15.	ESP control lamp -K155- lights up for 2 seconds and goes out again
			Operate ASR/ESP button -E256-	ESP control lamp -K155- lights up
			Operate ASR/ESP button -E256- again	ESP control lamp -K155- goes out
					Check wiring using wiring diagram. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations binder
			ASR/ESP button -E256- faulty		Replace ASR/ESP button -E256-. Refer to 70 - INTERIOR TRIM ; instrument panel