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12.2 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 rearview mirror control switch (S50/2) Resistance	see Table I ( 23)			Disconnect connector (1) from control module (N32/9)	see Table I	Wiring Outside rearview mirror control switch (S50/2)
3.0	Adjustable steering column switch (S59) Resistance	15 (2)	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)
		15 (2)	N32/9	11 (2)	Move switch (S59) back	< 1
		15 (2)	N32/9	4 (2)	Move switch (S59) up	< 1
		15 (2)	N32/9	10 (2)	Move switch (S59) down	< 1
4.0	Electrically adjustable and heated passenger side outside rearview mirror (M21/2) Voltage supply	2 (1)	M21/2	3 (1)	Disconnect connector (1) from control module (M21/1) Mirror control switch (S50/2) in left position Move switch (S50/2): 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 (S50/2): left right	11-14 V -11 to -14 V
5.0	Electrically adjustable and heated driver's 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 (S50/2) in right position Move switch (S50/2): 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 (S50/2): right left	11-14 V -11 to -14 V
6.0	Electrically adjustable inside rearview mirror (M21/3) Voltage supply	5	M21/3	6	Remove inside mirror (M21/3) and disconnect connector Mirror control switch (S50/2) in center position Move switch (S50/2): forward back	11-14 V -11 to -14 V	Wiring Electric mirror/steering column adjustment control module (N32/9)
		7	M21/3	5	Move switch (S50/2): left right	11-14 V -11 to -14 V
7.0	Electrically adjustable outside rearview mirrors (M21/1, M21/2), retraction feature Voltage supply	7	M21/1, M21/2	6	Disconnect connector (X54/7) Move switch (S50/2): forward back	11-14 V -11 to -14 V	Wiring Electric mirror/steering column adjustment control module (N32/9)
8.0	Adjustable stering column motor (M20) Voltage supply	2	X54/7	1	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
9.0	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
10.0	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	2 (1)	Disconnect connector (1) 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)
11.0	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
12.0	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
13.0	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 400-1300
14.0	Adjustable steering column motor (M20) Potentiometer resistance	6 (2)	N32/9	13 (2)	Disconnect connector (2) from control module (N32/9)	1100±220	Wiring Adjustable steering column motor (M20) 14.1
14.1	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) 14.2
		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
		5 (2)	N32/9	20 (2)	Disconnect connector (2) from control module (N32/9)	600±300 difference from recorded value
14.2	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
15.0	Outside rearview mirror switch (S50/2) Voltage supply	3	S50/2	2	Disconnect connector from switch (S50/2) Parking lamps ON	11-14 V	Wiring Outside rearview mirror switch (S50/2)
16.0	Adjustable steering column switch (S59) Voltage supply	7	S59	5	Disconnect switch (S59) Parking lamps ON	11-14 V	Voltage supply, circuit 58d Adjustable steering column switch (S59)
17.0	Automatic dimming inside rearview mirror (H7) Voltage supply	2	H7	5	Disconnect connector from mirror (H7) Ignition: ON	11-14 V	Wiring
18.0	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)
19.0	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)

1) Serial Data Exchange=data cable over which digital data is transmitted in sequence.

Switch (S50/2) setting Move switch
1) 10

11

17

18

Center
(inside mirror) to the: left
right
forward
back
< 1
< 1
< 1
< 1

> 20 k
> 20 k
> 20 k
> 20 k

> 20 k
< 1
< 1
> 20 k

> 20 k
> 20 k
< 1
< 1

Left
(Driver side mirror) to the: left
right
forward
back
< 1
< 1
< 1
< 1

< 1
< 1
< 1
< 1

> 20 k
< 1
< 1
> 20 k

> 20 k
> 20 k
< 1
< 1

Right
(Passenger side) to the: left
right
forward
back
> 20 k
> 20 k
> 20 k
> 20 k

< 1
< 1
< 1
< 1

> 20 k
< 1
< 1
> 20 k

> 20 k
> 20 k
< 1
< 1

Retract
(mirrors fold-in) to the: forward
back
> 20 k
> 20 k

< 20 k
< 20 k

< 1
> 20 k

< 1
< 1

1) Disconnect connector (1) from Control module (N32/9)