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LOCATION:    15.3 Model 210 Electric Seat Adjustment (ESA)   >   23 Electrical Test Program - Test


Electrical Test Program - Test

Test scope Test connection Test condition Nominal value Possible cause/Remedy
1.0
Left or right front ESA control module (N32/1 or N32/2) with memory
Voltage supply


11 (1)
N32/1
N32/2


2
(1)
Disconnect connector (1) from N32/1 or N32/2. 11 - 14 V Wiring.
1.1   Left or right front ESA control module (N32/1 or N32/2) with memory
Voltage supply


11 (1)
N32/1
N32/2




3
(1)
see step 1.0 11 - 14 V Wiring.
2.0

Left or right front switch group (S91 or S92) with memory
Voltage supply


1
S91
S92


8
Disconnect connector from S91 or S92.
Parking lamps: ON
11 - 14 V Wiring,
20.0
3.0 Fore/aft switch
group (S91s1 or S92s1) with memory
Resistance



12

N32/1
N32/2




5
(1)
Disconnect connector (1) from N32/1 or N32/2.

S91s1 or S92s1:
Press forward

S91s1 or S92s2:
Press aft



>20 k

approx. 43

approx. 16
Wiring,
S91or S92
4.0 Left or right front ESA control module (N32/1 or N32/2) with memory
Seat fore/aft


1
(5)
N32/1
N32/2


2
(5)
Fore/aft switch (S91s1 or S92s1):
Press forward

S91s1 or S92s1:
Press aft

(for 1 - 2 sec.)
11 - 14 V


- 11 to - 14 V
3.0,
N32/1 or N32/2
5.0 Fore/aft motor (M27m1 or M28m1)


2
(1)


11 (1)
N32/1
N32/2


N32/1
N32/2




1
(5)


2
(5)
Ignition: OFF
CAUTION!
Disconnect connector (1 and 5) from N32/1 or N32/2.
Bridge sockets 1 and 2 with fused jumper wire
124 589 37 63 00
Motor runs. If nominal values attained,
5.1




Wiring,
M27m1 or M28m1
5.1   Fore/aft motor (M27m1 or M28m1)
Hall-sensor


5
(5)
N32/1
N32/2


6
(5)
Connector 5 and 1 connected. 7 - 12 V Wiring,
M27m1 or M28m1
6.0 Front raise/lower switch (S91s3)
Resistance


12 (1)
N32/1
N32/2


4
(1)
Disconnect connector (1) from N32/1 or N32/2.

S91s3 or S92s3:
Press raise

S91s3 or S92s3:
Press lower
>20 k




approx. 43


approx.16
Wiring,
S91 or S92
7.0 Left or right front ESA control module (N32/1 or N32/2) with memory
Front seat raise/lower


2
(6)
N32/1
N32/2




1
(6)
Front raise/lower switch (S91s3 or S92s3):
Press raise

S91s3 or S92s3:
Press lower


(for 1 - 2 sec.)
11 - 14 V


- 11 to - 14 V
6.0,
N32/1 or N32/2
8.0 Front raise/lower motor (M27m3 or M28m3)


2
(1)


11 (1)
N32/1
N32/2


N32/1
N32/2


1
(6)


2
(6)
Ignition: OFF
CAUTION!
Disconnect connector (1 and 6) from N32/1 or N32/2.
Bridge sockets 1 and 2 with fused jumper wire
124 589 37 63 00
Motor runs. If nominal values attained:
8.1




Wiring,
M27m3 or M28m3
8.1   Front raise/lower motor (M27m3 or M28m3)
Hall-sensor


5
(6)
N32/1
N32/2


6
(6)
Connector 1 and 6 connected.
7 - 12 V M27m3 or M28m3.
9.0 Rear raise/lower
switch (S91s2 or S92s2)
Resistance


12 (1)
N32/1
N32/2




5
(1)
Disconnect connector (1) from N32/1 or N32/2.
S91s2 or S92s2:
Press raise

S91s2 or S92s2:
Press lower
>20 k


approx. 169


approx. 75
Wiring,
Left or right front ESA switch group (S91 or S92).
10.0 Left or right front ESA control module (N32/1 or N32/2) with memory


2
(4)
N32/1
N32/2



1
(4)
Rear raise/lower switch (S91s2 or S92s2):
Press raise

S91s2 or S92s2:
Press lower


(for 1 - 2 sec.)
11 - 14 V


- 11 to - 14 V
9.0,
N32/1 or N32/2
11.0 Rear raise/lower
motor (M27m2 or M28m2)


2
(1)


11 (1)
N32/1
N32/2


N32/1
N32/2



1
(4)


2
(4)
Ignition: OFF
CAUTION!
Disconnect connector (1 and 4) from N32/1 or N32/2.
Bridge sockets 1 and 2 with fused jumper wire
124 589 37 63 00
Motor runs.
If nominal values are attained,
11.1




Wiring,
M27m2 or M28m2.
11.1   Rear raise/lower motor (M27m2 or M28m2)
Hall-sensor


5
(4)
N32/1
N32/2


6
(4)
Connector 1 and 4 connected. 7 - 12 V M27m2 or M28m2.
12.0 Backrest fore/aft
switch (S91s5 or S92s5)
Resistance


12
(1)
N32/1
N32/2




1
(1)
Disconnect connector (1) from N32/1 or N32/2.
S91s5 or S92s5:
Press raise

S91s5 or S92s5:
Press lower
>20 k


approx. 43


approx. 16
Wiring,
Left or right front ESA switch group (S91 or S92).
13.0 Left or right front ESA control module (N32/1 or N32/2) with memory
Backrest fore/aft


2
(7)
N32/1
N32/2




4
(7)
Backrest fore/aft
switch S91s5 or S92s5:
Press forward

S91s5 or S92s5:
Press aft

(for 1 - 2 sec.)
11 - 14 V


- 11 to - 14 V
Wiring,
12.0,
N32/1 or N32/2
14.0 Backrest raise/lower
motor (M27m5 or M28m5)


2
(1)


11 (1)
N32/1
N32/2


N32/1
N32/2



4
(7)


2
(7)
Ignition: OFF
CAUTION!
Disconnect connector (1 and 7) from N32/1 or N32/2 and connector (1) from M27m5 or M28m5.
Bridge sockets 1 and 2 with fused jumper wire
124 589 37 63 00
Motor runs.
If nominal values are attained,
14.1




Wiring,
M27m5 or M28m5
14.1   Backrest raise/lower
motor (M27m5 or M28m5)
Hall-sensor


5
(7)
N32/1
N32/2


4
(7)
Connectors 1 and 7 connected.
7 - 12 V
M27m5 or M28m5
15.0 Head restraint raise /lower switch (S91s4 or S92s4)
Resistance


12 (1)
N32/1
N32/2


4
(1)
Disconnect connector (1) from N32/1 or N32/2.
S91s4 or S92s4:
Press raise

S91s4 or S92s4:
Press lower
>20 k


approx. 169


approx. 75
Wiring,
S91 or S92
16.0 Left or right front ESA control module (N32/1 or N32/2) with memory
Head restraint raise/lower


4
(7)
N32/1
N32/2


1
(7)
Head restraint raise/lower switch (S91s4 or S92s4):
Press raise

S91s4 or S92s4
Press lower


- 11 to - 14 V


11 - 14 V

15.0,
N32/1 or N32/2
17.0 Head restraint raise/lower motor (M27m4 or M28m4)


2
(1)



11 (1)
N32/1
N32/2



N32/1
N32/2




4
(7)



1
(7)
Ignition: OFF
CAUTION!
Disconnect connector (1 and 7) from N32/1 or N32/2.
Bridge sockets 2 and 4 with fused jumper wire
124 589 37 63 00
Motor runs.
If nominal values are attained,
17.1





Wiring,
M27m4 or M28m4
17.1   Head restraint raise/lower motor (M27m4 or M28m4)
Hall-sensor


5
(7)
M27m4
M28m4


3
(7)
Connectors 1 and 7 connected. 7 - 12 V



Wiring,
M27m4 or M28m4
18.0   Left or right front switch group (S91 or S92) with memory
Store memory
Resistance


5
(1)






4
(1)



1
(1)



1
(1)
N32/1
N32/2






N32/1
N32/2



N32/1
N32/2



N32/1
N32/2


12
(1)






12
(1)



12
(1)



12
(1)
Disconnect connector (1) from N32/1 or N32/2.

Memory button 1:
Rest position
Button pressed


Memory button 2:
Rest position
Button pressed


Memory button 3:
Rest position
Button pressed


Memory store button
Rest position
Button pressed




>20 k
approx. 330



>20 k
approx. 330



>20 k
approx. 169



>20 k
approx. 330
Wiring,
S91 or S92
19.0 Left front power seat memory


43 (A)
N10-1



6
(A)
Ignition: OFF 11 - 14 V Wiring,
21.0, 22.0,
Combination control
module (N10-1).
20.0   Left or right front switch group (S91 or S92) with memory
Illumination


3
S91
S92



8
Disconnect connector from S91 or S92.
Parking lamps: ON
11 - 14 V Wiring,
S91 or S92
21.0   CAN H data line from left or right front ESA control module (N32/1 or N32/2) with memory to combination control module (N10-1)
-//-
N32/1
N32/2
7
(1)



N10-1

78
(A)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connector (1) from PSE (A37).
< 1 Wiring,
21.1
21.1   CAN H data line from left or right front ESA control module (N32/1 or N32/2) with memory to combination control module (N10-1)
-


N10-1




78
(A)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connector (1) from PSE (A37).
< 20 K Wiring,
21.2
21.2   CAN H data line from left or right front ESA control module (N32/1 or N32/2) with memory to combination control module (N10-1)
+


4
(A)
N10-1



78
(A)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connector (1) from PSE (A37).
< 1 V Wiring,
22.3
22.0   CAN L data line from left or right front ESA control module (N32/1 or N32/2) with memory to combination control module (N10-1)
-//-
N32/1
N32/2
6
(1)


N10-1

62
(A)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connectors (1 and 3) from PSE (A37).
< 1 Wiring,
22.1
22.1

CAN L data line from left or right front ESA control module (N32/1 or N32/2) with memory to combination control module (N10-1)
-



N10-1




62
(A)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connectors (1 and 3) from PSE (A37).
< 20 k Wiring,
22.2
22.2

CAN L data line from left or right front ESA control module (N32/1 or N32/2) with memory to combination control module (N10-1)
+


4
(A)
N10-1



62
(A)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connector (1 and 3) from PSE (A37).
< 1 V Wiring,
25.0
23.0

CAN H data line from right front ESA control module (N32/2) with memory to left front ESA control module (N32/1) with memory
-//-

N32/1
7
(1)




N32/2
7
(1)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connectors (1 and 3) from PSE (A37).
< 1 Wiring,
24.0
24.0

CAN L data line from right front ESA control module (N32/2) with memory to left front ESA control
module (N32/1)
-//-

N32/1
6
(1)



N32/2
6
(1)
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connectors (1 and 3) from PSE (A37).
< 1 Wiring,
25.0
25.0


CAN L /CAN H data lines
to each other


6
N32/1
N32/2


7
Ignition: OFF
CAUTION!
Disconnect connector 1 from N32/1 or N32/2, connector (A) from N10-1 and connectors (1 and 3) from PSE (A37).
>20 k Wiring,
D.M., Body and Accessories, Volume 1, 5.2, > 23 > 10.0