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Volume 3

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LOCATION:    9.5 Traction Systems (ETS)(4MATIC)   >   23 Electrical Test Program - Test


Electrical Test Program - Test

Test scope Test connection Test condition Nominal value Possible cause/Remedy
1.0
ETS/SPS Control module (N47-2)
Circuit 15
Voltage supply


57 (2.23)

81 (2.47)
N47-2




14
(1.14)

14
(1.14)
Ignition: ON 11 - 14 V 1.1,
1.2

1.1   Voltage supply from:
Fuse and relay box (F1)





N47-2

14
(1.14)
Ignition: ON 11 - 14 V Fuse (f22) in F1,
Wiring.
1.2   Ground wire

W9



W9






N47-2

57
(2.23)


81
(2.47)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).
< 1 Wiring,
Ground (left headlamp unit), (W9).
2.0 ETS/SPS control
module (N47-2)
Circuit 30
Voltage supply


57
(2.23)

57 (2.23)
N47-2






58
(2.48)

82
(2.48)
Ignition: OFF 11 - 14 V Fuse (f27) in F1,
Wiring.
3.0 CAN data bus

34 (3.L)


N47-2



33
(3.H)



Ignition: ON


55 - 65
Wiring,
End resistors in ME-SFI and RCL control modules, see DM, Engines and Body and Accessories.
4.0   Diagnostic output

57 (2.23)
N47



13
(1.13)
Ignition: ON



10 - 14 V


Wiring,
N47-2
5.0
High pressure/return pump relay (F1k25)
Voltage supply


57 (2.23)
N47-2



46
(2.12)


Ignition: On


11 - 14 V
Wiring,
5.1
5.1
 
Coil resistance

47 (2.13)
N47-2



46
(2.12)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


40 - 80
Wiring,
High pressure/return pump
relay (F1k25).
6.0
Left front axle VSS sensor (L6/1)
Internal resistance


77 (2.43)
N47-2



78
(2.44)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


0.8 - 2.3 k
6.1
Wiring,
L6/1
6.1  

Insulation resistance


57
(2.23)
N47-2



77
(2.43)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


>20 k

Wiring,
L6/1
7.0
Right front axle VSS
sensor (L6/2)
Internal resistance


52 (2.18)
N47-2



51
(2.17)
Ignition: OFF
Disconnect ETS/SPS module (N47-2).


0.8 - 2.3 k
7.1,
Wiring,
L6/2
7.1  

Insulation resistance


57 (2.23)
N47-2



52
(2.18)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


> 20 k
Wiring,
L6/2
8.0
Left rear axle
sensor (L6/3)
Internal resistance


26 (1.26)
N47



25
(1.25)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


0.6 - 1.8 k
8.1
Wiring,
L6/3
8.1  

Insulation resistance


57
(2.23)
N47-2



26
(1.26)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


> 20 k
Wiring,
L6/3
9.0
Right rear axle VSS
sensor (L6/4)
Internal resistance


28 (1.28)
N47-2



27
(1.27)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).

0.6 - 1.8 k
9.1
Wiring,
L6/4
9.1  

Insulation resistance


57 (2.23)
N47-2



28
(1.28)


Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


> 20 k
Wiring,
L6/4
10.0 ASR/ETS/ESP Hydraulic
unit (A7/3)
Solenoid valves
Voltage supply


57 (2.23)
N47-2



80
(2.46)
Ignition: ON
11 - 14 V Wiring,
N47-2
11.0 Left front axle solenoid valve (hold) (A7/3y6)
Internal resistance


73 (2.39)
N47-2




80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
12.0 Left front axle solenoid valve (release) (A7/3y7)
Internal resistance


72 (2.38)
N47-2




80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


2.8 - 6.6
Wiring,
A7/3
13.0 Right front axle solenoid valve (hold) (A7/3y8)
Internal resistance


74 (2.40)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
14.0 Right front axle solenoid valve (release) (A7/3y9)
Internal resistance


71 (2.37)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


2.8 - 6.6
Wiring,
A7/3
15.0 Left rear axle solenoid valve (hold) (A7/3y10)
Internal resistance


69 (2.35)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
16.0 Left rear axle solenoid valve (release) (A7/3y11)
Internal resistance


70 (2.36)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


2.8 - 6.6
Wiring,
A7/3
17.0 Right rear axle solenoid
valve (hold) (A7/3y12)
Internal resistance


64
(2.30)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
18.0 Right rear axle solenoid
valve (release) (A7/3y13)
Internal resistance


65 (2.31)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


2.8 - 6.6
Wiring,
A7/3
19.0 Pressure circuit 1 switchover solenoid
valve (A7/3y24)
Internal resistance


60 (2.26)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
20.0 Pressure circuit 2 switchover solenoid
valve (A7/3y25)
Internal resistance


62 (2.28)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
21.0 Pressure circuit 1 vacuum solenoid valve (A7/3y26)
Internal resistance


61 (2.27)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3
22.0 Pressure circuit 2 vacuum solenoid valve (A7/3y27)
Internal resistance


63 (2.29)
N47-2



80
(2.46)
Ignition: OFF
Disconnect ETS/SPS control module (N47-2).


5.4 - 12.6
Wiring,
A7/3