 |
 |
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 |
|
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 |
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