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Test readings, electronic control module connections, Anti-theft alarm with VSS

Test readings, electronic control module connections, Anti-theft alarm with VSS

Pin

Component/Function

In/Out

Test conditions

Between

Test reading

Function/Fault diag.

1

Antenna,

Remote control unit, transmitter

IN

Not measurable with conventional instruments





29/106

2

LED

OUT

Activate with ISAT scan tool

Select "LED".

"OFF"

"ON"





2-13

2-13





<0.5 V

2 V

27/94

3

Tailgate switch

IN

Tailgate closed Tailgate open

3-13

3-13

Batt+

0 V

18/120

4

Door switches

IN

Door closed (switch open)

Door open (switch closed)

4-13

4-13

Batt+

0 V

18/98

5

Not used











6

Central locking system, unlocking

IN

Disarm the alarm using remote control, front doors

- normal position

- unlock position

Multimeter with min/max facility required. If min selected 0 V obtained. A conventional voltmeter drops from about 7 V to about 1.5-3 V.

6-13





7 V

0 V for 0.75 sec

32/98

7

Glass breakage sensor, input

IN

- normal position

- tap/scrape with bunch of keys

7-13

0 V

2-4 V

19/110

8

Not used











9

Immobilizing input

OUT

Ignition "ON"

Ignition "OFF",

Ignition "OFF", key removed

9-13

+B voltage +B voltage 0 V

26/150

10

+15

IN

Ignition "ON"

10-13

Batt+

22/146

11

Horn

OUT

Activate using ISAT scan tool Select "HORN" "OFF" "ON"

11-13 11-13

Batt+ 0 V

23/118

12

Direction indicators

OUT

Activate with ISAT scan tool

Select "FLASHERS"

"OFF"

"ON"

12-13 12-13

0 V Batt+

24/114

13

Power ground

IN



13-Batt-

<0.1 V

15/--

14

Antenna ground

IN

Ignition "OFF"

14-13

<5 Ohm

29/106

15

Glass breakage sensor Cabriolet only

IN

Top down

15-13





16

Switch, hood

IN

Hood open Hood closed

16-13

0 V Batt+

18/102

17

Central locking system, locking

IN

Arm the alarm using remote control

- normal position

- lock position

Multimeter with min/max facility required. If min selected 0 V obtained. A conventional voltmeter drops from about 7 V to about 1.5-3 V.

17-13



Batt+

0 V for 0.75 sec

31/98

18

Pictogram switch

IN

Door open (switch closed) Door closed (switch open)

18-13

0 V

Batt+

--/128

19

Diagnostics, comm. line

IN/OUT

ISAT scan tool connected ISAT scan tool not connected

19-13

Batt+

0 V

39/158

20

Not used











21

+15 (4-cyl) +30 (6-cyl)

IN

Ignition "ON" (+15)

- ISAT scan tool connected

- ISAT scan tool not connected

21-13



11 V

4 V

22/150

22

+30 supply direction indicators

IN



Batt+ -22

<0.5 V

15/154

23

Unlocking tailgate using remote control

IN

Activate with ISAT scan tool

Select "TAILGATE"

"ON"

"OFF"

or remote control





23-13





Batt+

0 V

33/124

24

Direction indicators

OUT

Activate with ISAT scan tool

Select "FLASHERS"

"OFF"

"ON"





24-13 24-13





0 V

Batt+

24/114

25

+30 supply control module

IN



Batt+ -25

<0.5 V

15/84