 |
 |
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
 
 |
ADS control module (N51)
Circuit 87 SA
Voltage supply |
35  |
N51
 |
 10 |
Ignition: ON |
11 - 14 V |
1.1,
Wiring,
W15
|
| 1.1 |
|
Voltge supply from:
Base module (N16/1)
|
W16/1
|
|
N51
10 |
Ignition: ON |
11 - 14 V |
Wiring,
Fuse (F3) on BM (N16/1),
|
| 2.0 |
|
Diagnosis output |
35 |
N51
|
25 |
Ignition: ON
|
10 - 14 V |
Wiring,
ASD control module (N51). |
| 3.0 |
 |
ADS MIL (A1e27) |
35 |
N51
|
8 |
Ignition: ON
Engine: at Idle
|
A1e27: ON
< 1 V
A1e27: OFF
11 - 14 V
|
Wiring,
3.1,
N51
Readout DTC memory
 12,
Wiring,
N51
|
| 3.1 |
|
ADS MIL (A1e27) |
35 |
N51
|
8 |
Ignition: OFF
Disconnect N51.
Ignition: ON |
11 - 14 V
|
Wiring,
A1e27
|
| 4.0 |
 |
Steering angle
sensor (N49)
Signal |
35 |
N51
 |
4 |
Ignition: ON |
> 3 V ~ |
Wiring,
4.1,
ADS control module (N51).
|
| 4.1 |
|
Steering angle sensor (N49)
|
35 |
N51
|
4 |
Ignition: OFF
Disconnect N51.
Ignition: ON
|
> 3 V ~ |
Wiring,
4.2,
4.3,
N49 |
| 4.2 |
|
Circuit 30
Voltage supply
|
2 |
N49x1
|
4 |
Ignition: OFF
Disconnect N49x1. |
11 - 14 V |
Wiring. |
| 4.3 |
|
Circuit 87
Voltage supply
|
2 |
N49x1
|
3 |
Ignition: ON |
11 - 14 V |
Wiring. |
| 5.0 |
 |
Steering angle
sensor (N49)
Initialization |
|
|
|
Engine: at Idle
Turn steering wheel from right to left stop.
|
A1e27 goes out.
|
3.0 |
| 6.0 |
|
Left front axle damper valve assembly (Y51)
Voltage supply |
35 |
N51
|
19 |
Ignition: ON |
11-14 V |
Wiring,
ADS control module (N51).
|
| 6.1 |
|
Front axle solenoid
valve 1 (Y51y1)
|
39 |
N51
 |
19 |
Ignition: OFF
Disconnect N51. |
10 - 16  |
Wiring,
Y51
|
| 6.2 |
|
Front axle solenoid
valve 2 (Y51y2)
|
40 |
N51
|
19 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y51
|
| 7.0 |
 |
Right front axle damper valve assembly (Y52)
Voltage supply |
35 |
N51
|
21 |
Ignition: ON |
11-14 V |
Wiring,
ADS control module (N51).
|
| 7.1 |
|
Front axle solenoid
valve 1 (Y52y1)
|
41 |
N51
|
21 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y52
|
| 7.2 |
|
Front axle solenoid
valve 2 (Y52y2)
|
22 |
N51
|
21 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y52
|
| 8.0 |
|
Left rear axle damper valve assembly (Y53)
Voltage supply |
35 |
N51
|
31 |
Ignition: ON |
11-14 V |
Wiring,
ADS control module (N51).
|
| 8.1 |
|
Rear axle solenoid
valve 1 (Y53y1)
|
24 |
N51
|
31 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y53
|
| 8.2 |
|
Rear axle solenoid
valve 2 (Y53y2)
|
3 |
N51
|
31 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y53
|
| 9.0 |
 |
Right rear axle damper valve assembly (Y54)
Voltage supply |
35 |
N51
|
2 |
Ignition: ON |
11-14 V |
Wiring,
ADS control module (N51).
|
| 9.1 |
|
Rear axle solenoid
valve 1 (Y54y1)
|
23 |
N51
|
2 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y54
|
| 9.2 |
|
Rear axle solenoid
valve 2 (Y54y2)
|
1 |
N51
|
2 |
Ignition: OFF
Disconnect N51. |
10 - 16 |
Wiring,
Y54
|
| 10.0 |
|
Circuit 61
Voltage supply |
35 |
N51
|
26 |
Ignition: ON
Engine: at Idle |
< 1 V
11-14 V
|
Wiring,
Generator (G2)
|
| 11.0 |
|
Right Front Wheel
VSS Signal |
35 |
N51
|
5 |
Lift front of vehicle.
Ignition: ON
Rotate right front wheel at approx. 1 revolution/second.
|
> 3 V ~ |
ETS or ASR or ESP, see DM, Chassis and Drivetrain,
Wiring,
ADS control module (N51). |
| 12.0 |
|
Stop lamp switch (S9/1)
(4-pole) |
35 |
N51
|
7 |
Ignition: ON
Do not apply service brake.
Apply service brake. |
< 1 V
11-14 V
|
Wiring,
S9/1
|
| 13.0 |
|
Left front body lateral acceleration sensor (B24/3)
Voltage supply |
13 |
N51
|
18 |
Ignition: ON |
4.75 - 5.25 V |
Wiring,
B24/3,
ADS control module (N51).
|
| 13.1 |
|
Static sensor signal (off)
|
13 |
N51
|
15 |
Ignition: ON |
2.35 - 2.65 V |
Wiring,
B24/3
|
| 13.2 |
|
Dynamic sensor signal (on)
|
13 |
N51
|
15 |
Ignition: ON
Vigorously move left front section of vehicle up and down by hand.
|
> 5 mV ~
Note:
Value changes with movement of vehicle. Value can only be attained
with digital multimeter set to mV ~.
|
B24/3
|
| 14.0 |
|
Right front body lateral acceleration sensor (B24/4)
Voltage supply |
33 |
N51
|
38 |
Ignition: ON |
4.75 - 5.25 V |
Wiring,
B24/4,
ADS control module (N51).
|
| 14.1 |
|
Static sensor signal (off) |
33 |
N51
|
34 |
Ignition: ON |
2.35 - 2.65 V |
Wiring,
B24/4
|
| 14.2 |
|
Dynamic sensor signal (on) |
33 |
N51
|
34 |
Ignition: ON
Vigorously move right front section of vehicle up and down by hand. |
> 5 mV ~
Note:
Value changes with movement of vehicle. Value can only be attained
with digital multimeter set to mV ~.
|
B24/4
|
| 15.0 |
|
Right rear body lateral acceleration sensor (B24/6)
Voltage supply |
30 |
N51
|
29 |
Ignition: ON |
4.75 - 5.25 V |
Wiring,
B24/6,
ADS control module (N51).
|
| 15.1 |
|
Static sensor signal (off) |
30 |
N51
|
9 |
Ignition: ON |
2.35 - 2.65 V |
Wiring,
B24/6
|
| 15.2 |
|
Dynamic sensor signal (on) |
30 |
N51
|
9 |
Ignition: ON
Vigorously move right rear section of vehicle up and down by hand.
|
> 5 mV ~
Note:
Value changes with movement of vehicle. Value can only be attained
with digital multimeter set to mV ~.
|
B24/6
|
| 16.0 |
|
Comfort/sport
switch (S45/1) |
35 |
N51
|
27 |
Ignition: ON
Hold switch S45/1 in:
Comfort setting
Release switch:
Sport setting |
< 1 V
Indicator lamp in S45/1: OFF
11-14 V
Indicator lamp in S45/1: OFF
4 - 6 V
Indicator lamp in S45/1: ON |
Wiring,
ADS control module (N51),
S45/1
Wiring,
ADS control module (N51).
Wiring,
ADS control module (N51),
S45/1,
16.1. control module (N51).
|
| 16.1 |
|
Indicator lamp in S45/1
|
35 |
N51
|
6 |
Release switch (S45/1)
|
11 - 14 V
Indicator lamp in S45/1: ON
|
Wiring,
N51
|
Printable version
