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Volume 4

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LOCATION:    12.1 Electric Mirror, Steering Column Adjustment, Heated Mirrors (EMSC)   >   23 Electrical Test Program - Test


Electrical Test Program - Test

Test step
DTC
Scope of test
Test connection
Test condition
Nominal value
Possible cause/remedy
1.0 Electric mirror/steering column adjustment control module (N32/9)
Voltage supply

15 (2)
N32/9

16
(2)
Disconnect connector (2) from control module (N32/9) 11-14 V Wiring
2.0 Outside mirror control switch (S50)
Resistance
see Table I ( 23)
Disconnect connector (1) from control module (N32/9) see Table I Wiring
Outside mirror control switch (S50)
3.0 Electrically adjustable and heated driver's side outside rearview mirror (M21/1)
Voltage supply

2 (1)
M21/1

3
(1)
Disconnect connector (1) from control module (M21/1)
Mirror control switch (S50) in left position
Move switch (S50):
forward
back






11-14 V
-11 to -14 V
Wiring
Electric mirror/steering column adjustment control module (N32/9)
   
2 (1)
M21/1

5
(1)
Move switch (S50):
left
right

11-14 V
-11 to -14 V
 
4.0 Electrically adjustable and heatedpassenger side outside rearview mirror (M21/2)
Voltage supply

2 (1)
M21/2

3
(1)
Disconnect connector (1) from control module (M21/2)
Mirror control switch (S50) in right position
Move switch (S50):
forward
back






11-14 V
-11 to -14 V
Wiring
Electric mirror/steering column adjustment control module (N32/9)
   
2 (1)
M21/2

5
(1)
Move switch (S50):
right
left

11-14 V
-11 to -14 V
 
5.0 Electrically adjustable inside rearview mirror (M21/3)
Voltage supply

8
M21/3


7
Remove inside mirror (M21/3) and disconnect connector
Mirror control switch (S50) in center position
Move switch (S50):
right
left






11-14 V
-11 to -14 V
Wiring
Electric mirror/steering column adjustment control module (N32/9)
   
8
M21/3


6
Move switch (S50):
forward
back

11-14 V
-11 to -14 V

 
6.0 Adjustable steering column switch (S59)
Resistance

N32/9

17
(2)
Disconnect connector (2) from control module (N32/9)
Move mirror control switch (S59) forward



< 1
Wiring
Adjustable steering column
switch (S59)
   
N32/9

11
(2)
Move switch (S59) back < 1  
   
N32/9

4
(2)
Move switch (S59) left < 1  
   
N32/9


10
(2)
Move switch (S59) right < 1  
7.0 Adjustable stering column motor (M20)
Voltage supply

1
X54/7


2
Disconnect connector (X54/7)
Move steering column switch (S59):
right
left




11-14 V
-11 to -14 V
Wiring
Electric mirror/steering column adjustment control module (N32/9)
   
7
X54/7

8
Move switch (S50):
forward
back

11-14 V
-11 to -14 V

 
8.0 Adjustable stering column motor (M20)
Voltage supply

1
X54/7


2
Disconnect connector (X54/7)
0.1-15 Wiring
Adjustable stering column
motor (M20)
   
7
X54/7


8
  0.1-15
 
9.0 Serial Data Exchange 1) from Left front power seat control module (N32/1) to Electric mirror/steering column adjustment control module (N32/9)

N32/9


12
(2)
Disconnect connector (2) from control module (N32/9)

Press one of the memory position buttons on left front power seat switch group (S91)
0-1 V





4-7 V
Wiring
Left front power seat control
module (N32/1)
10.0 Electrically adjustable and heated driver's side outside rearview mirror (M21/1)
Potentiometer resistance

21 (1)
N32/9

4
(1)
Disconnect connector (1) from control module (N32/9) approx. 1000 Wiring
Electrically adjustable and heated driver's side outside rearview
mirror (M21/1)
   
1 (1)
N32/9


8
(1)
Manually move mirror glass in all directions value changes from
300-1200

 
11.0 Electrically adjustable and heated passenger side outside rearview mirror (M21/2)
Potentiometer resistance

14 (1)
N32/9

19
(1)
Disconnect connector (1) from control module (N32/9) approx. 1000 Wiring
Electrically adjustable and heatedpassenger side outside rearview mirror (M21/2)
   
9 (1)
N32/9


16
(1)
Manually move mirror glass in all directions value changes from
300-1200

 
12.0 Electrically adjustable inside rearview mirror (M21/3)
Potentiometer resistance

6 (2)
N32/9


7
(2)
Disconnect connector (2) from control module (N32/9)
approx. 1200 Wiring
Electrically adjustable inside rearview mirror (M21/3)
   
18 (2)
N32/9


19
(2)
Manually move mirror glass in all directions value changes from
300-1200

 
13.0 Adjustable steering column motor (M20)
Potentiometer resistance

6 (2)
N32/9

12
(2)
Disconnect connector (2) from control module (N32/9)
1100±220 Wiring
Adjustable steering column
motor (M20)
13.1
13.1 Potentiometer resistance  
Connect connector (2) to control module (N32/9)
Adjust steering column through complete range: up/back/down/forward
  Wiring
Adjustable steering column
motor (M20)
13.2
   
6 (2)
N32/9


5
(2)
Disconnect connector (2) from control module (N32/9)
record value  
     
Connect connector (2) to control module (N32/9)
Adjust steering column to full rear stop
 
 
   
6 (2)
N32/9

5
(2)
Disconnect connector (2) from control module (N32/9)
600±300
difference from recorded value
 
13.2 Potentiometer resistance
6 (2)
N32/9

20
(2)
Disconnect connector (2) from control module (N32/9) record value Wiring
Adjustable steering column
motor (M20)

     
Connect connector (2) to control module (N32/9)
Adjust steering column to full up stop
   
   
6 (2)
N32/9

20
(2)
Disconnect connector (2) from control module (N32/9) 600±300
difference from recorded value

 
14.0 Automatic dimming inside rearview mirror (H7)
Voltage supply

2
H7


5
Disconnect connector from mirror (H7)
Ignition: ON
11-14 V Wiring
14.1
14.1 Function  
Ignition: ON
Cover forward light sensor (daylight)
mirror reflection adjusts Automatic dimming inside rearview mirror (H7)
     
Shine a flashlight onto rear sensor (headlamp)
mirror reflection adjusts  
     
Cover forward light sensor (daylight) and turn on dome lamp or engage transmission range "R"
mirror reflection adjusts to normal position
 
15.0 Backup lamp switch (S16/2)
Voltage supply

2
H7


1
Disconnect connector from mirror (H7)
Ignition: ON

Transmission range "R" engaged


0-1 V


11-14 V
Wiring
Backup lamp switch (S16/2)
Exterior lamp failure monitoring module (N7)
16.0 Dome lamp (E15)
Voltage supply

3
H7


5
Disconnect connector from mirror (H7)
Ignition: ON

Dome lamp: ON


0-5 V

11-14 V
Wiring
Dome lamp (E15)
17.0 Electrically adjustable and heated driver's side outside rearview mirror (M21/1)
Voltage supply (heating)

1 (1)
M21/1

4
(1)
Disconnect connector (1) from mirror (M21/1)
Ignition: ON
11-14 V Wiring
18.0 Electrically adjustable and heated passenger side outside rearview mirror (M21/2)
Voltage supply (heating)

1 (1)
M21/2


4
(1)
Disconnect connector (1) from mirror (M21/2)
Ignition: ON
11-14 V Wiring

Switch (S50) setting Move switch 2) 10 11 17 18
Center
(inside mirror)
to the: left
right
forward
back
< 1
< 1
< 1
< 1
< 1
< 1
> 20 k
> 20 k
< 1
< 1
< 1
< 1
> 20 k
< 1
> 20 k
< 1
Left
(Driver side mirror)
to the: left
right
forward
back
< 1
< 1
< 1
< 1
< 1
< 1
> 20 k
> 20 k
> 20 k
> 20 k
> 20 k
> 20 k
> 20 k
< 1
> 20 k
< 1
Right
(Passenger side)
to the: left
right
forward
back
> 20 k
> 20 k
> 20 k
> 20 k
< 1
< 1
> 20 k
> 20 k
< 1
< 1
< 1
< 1
> 20 k
< 1
> 20 k
< 1

1) Serial Data Exchange=data cable over which digital data is transmitted in sequence.
2) Disconnect connector (1) from control module (N32/9)