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→ Socket designations of test box V.A.G 1598/20 are identical with contact designations on control unit -J104 as well as those on wiring harness connector.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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‒ Connect test box V.A.G 1598/20 to multi-pin connector on wiring harness.
Contact assignment of control unit -J104
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Multi-pin connector on control unit -J104
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|
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Contact
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closed
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Contact
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1
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=>
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Voltage supply from terminal 15
TCS/ESP switch
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-
5
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2
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=>
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Voltage supply from terminal 15
Return pump relay -J105
Solenoid valve relay ABS -J106
Steering angle sender -G85; [control unit 8D0 907 389/A/D/E]
Steering angle sender -G85; [control unit 4B0 907 389]
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86
86
5
3
|
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3
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=>
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Hydraulic unit; actuation of outlet valve, front left -N102
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15
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4
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=>
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Hydraulic unit; actuation of outlet valve, rear right -N135
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12
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5
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=>
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Hydraulic unit; actuation of inlet valve, front left -N101
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8
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6
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=>
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Hydraulic unit; actuation of inlet valve, rear right -N133
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2
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7
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=>
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Return pump relay -J105 (earth)
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85
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8
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=>
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Front left speed sensor -G47
- Vehicles with 4WD
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-
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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Contact
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closed
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Contact
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9
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=>
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Front left speed sensor -G47
- Vehicles with FWD
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-
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10
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=>
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Front left speed sensor -G47 (earth)
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-
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11
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=>
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Rear right speed sensor -G44
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-
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12
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=>
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Rear right speed sensor -G44 (earth)
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-
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13
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=>
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Rear left speed sensor -G46
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|
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14
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=>
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Rear left speed sensor -G46 (earth)
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-
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15
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=>
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Front right speed sensor -G45
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-
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16
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=>
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Front right speed sensor -G45 (earth)
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-
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17
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=>
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Not used
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-
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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|
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Contact
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closed
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Contact
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18
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=>
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Lateral acceleration sender -G200; signal wire [control unit 4B0 907 389]
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2
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18
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=>
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Lateral acceleration sender -G200; signal wire (combined sender for yaw rate and lateral acceleration) [control unit 8D0 907 389/A/D/E]
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4
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19
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=>
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Lateral acceleration sender -G200; (earth) [control unit 4B0 907 389]
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1
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19
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=>
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Not used; [control unit 8D0 907 389/A/D/E]
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-
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20
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=>
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Return pump relay -J105
Hydraulic unit; monitoring connection for return pump -V39
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87
14
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21
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=>
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Not used
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-
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22
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=>
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ESP hydraulic pump -V156; voltage supply
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2
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23
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=>
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Not used
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-
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24
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=>
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ESP hydraulic pump -V156; (earth)
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1
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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|
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Contact
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closed
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Contact
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25
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=>
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Hydraulic unit; actuation of outlet valve, rear left -N136
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11
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26
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=>
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Hydraulic unit; actuation of inlet valve, front right-N99
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5
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27
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=>
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Not used
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-
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28
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=>
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Earth connection, terminal 31
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-
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29
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=>
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Earth connection, terminal 31
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-
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30
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=>
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Not used
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-
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31
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=>
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Dash panel insert; TCS/ESP-lamp -K86 [control unit 4B0 907 389]
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=> CFD
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31
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=>
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Wheel speed sensor output rear left; [control unit 8D0 907 389/A/D/E]
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-
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32
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=>
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Dash panel insert, ABS/EDL lamp -K47
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=> CFD
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33
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=>
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Not used
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-
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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|
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Contact
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closed
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Contact
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34
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=>
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Yaw rate sender -G202; voltage supply; [control unit 4B0 907 389]
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2
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34
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=>
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Yaw rate sender -G202; voltage supply (combined sender for yaw rate and lateral acceleration) [control unit 8D0 907 389/A/D/E]
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1
|
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35
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=>
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Not used
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-
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36
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=>
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Not used; [control unit 4B0 907 389]
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-
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36
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=>
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Solenoid valve relay -J106 (earth); [control unit 8D0 907 389/A/D/E]
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85
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37
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=>
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Solenoid valve relay -J106 (earth); [control unit 4B0 907 389]
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85
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37
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=>
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Not used; [control unit 8D0 907 389/A/D/E]
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-
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38
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=>
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Not used
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-
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39
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=>
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Not used
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-
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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|
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Contact
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closed
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Contact
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40
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=>
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Not used
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-
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41
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=>
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Not used
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-
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42
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=>
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Brake light switch -F; brake test switch
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4
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43
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=>
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Not used
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-
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44
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=>
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TCS/ESP switch
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6
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45
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=>
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Not used
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-
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46
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=>
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Diagnostic connector; K-wire
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7
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47
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=>
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Not used
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-
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48
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=>
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Brake light switch -F; brake light switch
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2
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49
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=>
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Hydraulic unit -N55; actuation of switch valve 1 for ESP -N225
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7
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50
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=>
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Hydraulic unit -N55; actuation of ESP -N226
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6
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51
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=>
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Voltage supply, terminal 30 for ESP hydraulic pump -V156;
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-
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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|
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Contact
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closed
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Contact
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52
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=>
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Hydraulic unit -N55; actuation of ESP high-pressure valve 2 -N228
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4
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53
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=>
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Hydraulic unit -N55; actuation of ABS inlet valve rear left -N134
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3
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54
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=>
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Hydraulic unit -N55; actuation of ESP high-pressure valve 1 -N227
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1
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55
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=>
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Hydraulic unit -N55; actuation of outlet valve front right -N100
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9
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56
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=>
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Not available
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-
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57
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=>
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Not available
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-
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58
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=>
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Not available
|
-
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59
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=>
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Not available
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-
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60
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=>
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Not available
|
-
|
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61
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=>
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Not used
|
-
|
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62
|
=>
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Not used
|
-
|
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63
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=>
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Not used
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-
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
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|
|
Contact
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closed
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Contact
|
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64
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=>
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CAN bus low; Engine control unit, Gearbox control unit,
Steering angle sender-G85
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=> CFD
2
|
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65
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=>
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Not used; [control unit 4B0 907 389]
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-
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65
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=>
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CAN bus screen; [control unit 8D0 907 389/A/D/E]
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-
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66
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=>
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CAN bus high (engine control unit, gearbox control unit,
Steering angle sender -G85)
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=> CFD
3
|
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67
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=>
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Brake pressure sender -G201; (earth) [control unit 4B0 907 389]
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1
|
|
67
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=>
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Brake pressure sender -G201; voltage supply [control unit 4B0 907 389/A/D/E]
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1
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68
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=>
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Brake pressure sender -G201; signal wire
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2
|
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69
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=>
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Brake pressure sender -G201; voltage supply [control unit 4B0 907 389]
|
3
|
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69
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=>
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Brake pressure sender -G201; (earth) [control unit 8D0 907 389/A/D/E]
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3
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
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Multi-pin connector on control unit -J104
|
|
|
Contact
|
closed
|
|
Contact
|
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70
|
=>
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Wheel speed sensor output rear left; [control unit 4B0 907 389]
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=> CFD
|
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70
|
=>
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Dash panel insert; TCS/ESP-lamp -K86; [control unit 8D0 907 389/A/D/E]
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=> CFD
|
|
71
|
=>
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Speed sensor output, rear right.
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=> CFD
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72
|
=>
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Not used; [control unit 4B0 907 389]
|
-
|
|
72
|
=>
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Wheel speed sensor output front left; [control unit 8D0 907 389/A/D/E]
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=> CFD
|
|
73
|
=>
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Not used; [control unit 4B0 907 389]
|
-
|
|
73
|
=>
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Wheel speed sensor output front right; [control unit 8D0 907 389/A/D/E]
|
=> CFD
|
|
74
|
=>
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Not used
|
-
|
|
75
|
=>
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Lateral acceleration sender -G200; voltage supply,
[control unit 4B0 907 389]
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3
|
|
75
|
=>
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Not used; [control unit 8D0 907 389/A/D/E]
|
-
|
|
76
|
=>
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Handbrake warning switch -F9
|
=> CFD
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=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
|
Multi-pin connector on control unit -J104
|
|
|
Contact
|
closed
|
|
Contact
|
|
77
|
=>
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Yaw rate sender -G202; test signal [control unit 4B0 907 389]
|
5
|
|
77
|
=>
|
Yaw rate sender -G202; test signal (combined sender for yaw rate and lateral acceleration) [control unit 8D0 907 389/A/D/E]
|
3
|
|
78
|
=>
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Yaw rate sender -G202; reference signal [control unit 4B0 907 389]
|
4
|
|
78
|
=>
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Yaw rate sender -G202; reference signal (combined sender for yaw rate and lateral acceleration) [control unit 8D0 907 389/A/D/E]
|
5
|
|
79
|
=>
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Yaw rate sender -G202; signal wire; [control unit 4B0 907 389]
|
3
|
|
79
|
=>
|
Yaw rate sender -G202; signal wire (combined sender for yaw rate and lateral acceleration) [control unit 8D0 907 389/A/D/E]
|
6
|
|
80
|
=>
|
Yaw rate sender -G202; (earth) [control unit 4B0 907 389]
|
1
|
|
80
|
=>
|
Yaw rate sender -G202; (earth) (combined sender for yaw rate and lateral acceleration) [control unit 8D0 907 389/A/D/E]
|
2
|
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
|
Multi-pin connector on control unit -J104
|
|
|
Contact
|
closed
|
|
Contact
|
|
81
|
=>
|
Not used
|
-
|
|
82
|
=>
|
Not used
|
-
|
|
83
|
=>
|
Not used
|
-
|
|
84
|
=>
|
Not used
|
-
|
|
85
|
=>
|
Not used
|
-
|
|
86
|
=>
|
Not used; [control unit 4B0 907 389]
|
-
|
|
86
|
=>
|
Dash panel insert, standing time signal; [control unit 8D0 907 389/A/D/E]
|
=> CFD
|
|
87
|
=>
|
Not used
|
-
|
|
88
|
=>
|
Not used
|
-
|
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
Notes on fault table
-
◆ The socket descriptions of test box V.A.G 1598 are identical to the contact descriptions of control unit -J104 in the current flow diagram. Incorrect test procedures can cause system damage. Do not make connections between any contacts other than those listed in the test table.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
-
◆ The specified values refer to the readings obtained on tester V.A.G 1526 and are not necessarily applicable to other test units.
-
◆ If the readings obtained do not match the specified values, carry out the fault remedy measures in the right-hand part of the table.
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
-
◆ If the specified values are achieved, also check wiring for loose contacts and short circuit to positive and earth. This applies especially to sporadic faults.
-
◆ Use test leads V.A.G 1594 for checking continuity (bridging leads).
-
◆ If the measured figures only differ slightly from the specified values, clean the sockets and plugs of the testers and test leads (with contact spray G 000 700 04) and repeat the check. Before replacing components, check wiring and connections again. This is particularly important if the specification calls for a resistance reading of less than 10 ω.
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