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Volume 2.1

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LOCATION:    5.5 Convenience Feature (CF)   >   23 Electrical Test Program - Test (Power Windows)


Electrical Test Program - Test (Power Windows)

Preparation for Test:
1. See 21
2. CAUTION! See 22/1
3. Fuses OK.
4. Battery voltage 11 - 14 V
5. Convenience Feature functional.

Test scope Test connection Test condition Nominal value Possible cause/Remedy1)
1.0   Left front power window
One-touch Opening
HHT-activation
 



 
Ignition: ON
Activation of LF power
window relay (F1k18) via
HHT.

Press on HHT:

Press on HHT:



 




Relay closes.

Relay opens.

If values not OK:
Wiring,
Check function of convenience
relay (F1k14),
LF power window relay (F1k18),
23a 7.0,
Left front power window
switch (S21s1),
23a 4.0,
23a 6.0,
All Activity Module (N10).

If values OK:
Wiring,
Left front power window
switch (S21s1).
2.0   Right front power window
One-touch Opening
HHT-activation
 



 
Ignition: ON
Activation of RF power
window relay (F1k16) via
HHT.

Press on HHT:

Press on HHT:


 





Relay closes.

Relay opens.

If values not OK:
Wiring,
RF power window relay (F1k16),
23a 12.0,
Right front power window
switch (S21s2),
23a 9.0,
23a 11.0,
All Activity Module (N10).

If values OK:
Wiring,
Right front power window
switch (S21s2).
3.0   HHT Serial Interface
Connection between N10 and
data link connector (X11/4)
for diagnostics.
X11/4
12



N10
A3
(4)
Ignition: OFF
Remove N10 and
disconnect connector 4
(24-pole).

5
Wiring.
4.0   Left front power window
switch (S21s1)
Voltage supply

B
(1)
S21


C
(2)
Do not disconnect
connectors 1 and 2
11 - 14 V
Wiring.
5.0   Left front power window
switch (S21s1)
Function

B
(2)
S21


A
(2)
Do not disconnect
connector 2
Press switch to first detent
(manual open)


Pull switch UP
(close window)



11 - 14 V
(as long switch
is pressed)



- 11 to - 14 V

S21s1
6.0   Left front power window
switch (S21s1)
One-touch Opening
Function

B
(2)
S21


A
(2)
Do not disconnect
connector 2
Press switch to second detent.
(one-touch opening)



11 - 14 V
(approx. 4 sec.)
Wiring,
LF power window relay (F1k18),
S21s1,
All Activity Module (N10).
7.0   LF power window relay
(F1k18)
Function
 
Swap LF power window
relay (F1k18) with relay of
same type, i.e.: F1k16

Press left front power
window switch (S21s1) to
second detent:







Window opens
completely.
If values are OK:
LF power window relay (F1k18),

If values are not OK:
Wiring,
Left front power window switch
(S21s1)
23a 4.0,
23a 6.0,
N10
8.0   Left front power window
motor (M10/3)
Activation

X35/1
A8
A7





+

Ignition: OFF
Disconnect X35/1

CAUTION!
See notes on 22/1

For battery connection,
use safety cable
124 589 37 63 00
Window motor
runs.
Wiring,
M10/3
9.0   Right front power window
switch (S21s2)
Voltage supply

B
(1)
S21


E
(1)
Do not disconnect connector 1 11 - 14 V Wiring.
10.0   Right front power window
switch (S21s2)
Function

G
(1)
S21


F
(1)
Do not disconnect
connector 1
Press switch to first detent
(manual open)



Pull switch UP
(close window)


11 - 14 V
(as long as
switch is
pressed)



- 11 to - 14 V
S21s2
11.0   Right front power window
switch (S21s2)
One-touch Opening
Function

G
(1)
S21


F
(1)
Do not disconnect
connector 1
Press switch to second
detent.
(one-touch opening)



11 - 14 V
(approx. 4 sec.)
Wiring,
RF power window relay (F1k16),
S21s2,
All Activity Module (N10).
12.0   RF power window relay
(F1k16)
Function
 
Swap RF power window
relay (F1k16) with relay of
same type, i.e.: F1k18

Press right front power
window switch (S21s2) to
second detent:






Window opens
completely.
If values are OK:
RF power window relay (F1k16),

If values are not OK:
Wiring,
Right front power window
switch (S21s2),
23a 9.0,
23a 11.0,
N10
13.0   Right front power window
motor (M10/4)
Activation

X35/2
A8
A7






+
Ignition: OFF
Disconnect X35/2

CAUTION!
See notes on 22/1

For battery connection,
use safety cable
124 589 37 63 00
Window motor runs. Wiring,
M10/4
14.0   Left rear power window
switch (S21s3)
Voltage supply

B
(1)
S21


E
(1)
Do not disconnect
connector 1
11 - 14 V Wiring,
S21s3
15.0   Left rear power window
switch (S21s3)
Function

E
(2)
S21


D
(2)
Do not disconnect
connector 2
Press switch:
(manual open)



Pull switch UP
(close window)


11 - 14 V
(as long as
switch is
pressed)


- 11 to - 14 V
S21s3
16.0   Left rear power window
switch (S21/15s1)
(rear center console)
Voltage supply


S21/15


G
(2)
Do not disconnect
connector 2
11 - 14 V Wiring,
S21s3,
1.1
16.1   Left rear power window
switch (S21/15s1)
(rear center console)
Function

A
(2)
S21/15


B
(2)
Do not disconnect
connector 2,
Rear power window safety
switch (S21s5) not
pressed.
Press S21/15s1:
(manual open)



Pull switch UP:
(close window)

11 - 14 V




11 - 14 V
(as long as
switch is
pressed)




- 11 to - 14 V

Wiring,
S21s5,
S21/15s1
17.0   Left rear power window
motor (M10/5)
Activation

X35/3
A8
A7






+
Ignition: OFF
Disconnect X35/3

CAUTION!
See notes on 22/1

For battery connection,
use safety cable
124 589 37 63 00
Window motor
runs.
Wiring,
M10/5
18.0   Right rear power window
switch (S21s4)
Voltage supply

B
(1)
S21


C
(2)
Do not disconnect
connectors 1 and 2
11 - 14 V Wiring,
S21s4
19.0   Right rear power window
switch (S21s4)
Function

D
(1)
S21


C
(2)
Do not disconnect
connector 1
Press switch:
(manual open)



Pull switch UP
(close window)


11 - 14 V
(as long as
switch is
pressed)


- 11 to - 14 V
Wiring,
S21s4
20.0   Right rear power window
switch (S21/15s2)
(rear center console)
Voltage supply


S21/15


F
(2)
Do not disconnect
connector 2
11 - 14 V Wiring,
S21s4,
1.1
20.1   Right rear power window
switch (S21/15s2)
(rear center console)
Function

C
(2)
S21/15


D
(2)
Do not disconnect
connector 2,
Rear power window safety
switch (s21s5) not
pressed.
Press S21/15s2:
(manual open)



Pull switch UP:
(close window)

11 - 14 V




11 - 14 V
(as long as
switch is
pressed)




- 11 to - 14 V

Wiring,
S21s5,
S21/15
21.0   Right rear power window
motor (M10/6)
Activation

X35/4
A8
A7






+
Ignition: OFF
Disconnect X35/4

CAUTION!
See notes on 22/1

For battery connection,
use safety cable
124 589 37 63 00
Window motor runs. Wiring,
M10/6
22.0   Rear power window safety
switch (S21s5)
Function




S21/15
A
(1)
Do not disconnect
connector 1 at power
window combination switch
(S21/15) (rear center
console).
Position rear power
window safety switch to
right (safety switch OFF).

Position rear power
window safety switch to
left (safety switch ON).







<1



>20 k
Wiring,
S21s5,
S21/15








1.1
22.1   Rear power window safety
switch (S21s5)
Resistance

B
(1)
S21/15


A
(1)
Disconnect connector 1. <1
Wiring,
S21s5,
S21/15
1) Observe Preparation for Test, see 22.