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Volume 3

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LOCATION:    9.3 Traction Systems (ABS, ASR, ETS) and SPS   >   23 Electrical Test Program - Preparation for Test


Electrical Test Program - Preparation for Test

Test scope
Test connection
Test condition Nominal value Possible cause/Remedy
1.0
Traction Systems Control module (N47)
Circuit 87
Voltage supply


57
(2.23)

81
(2.47)
N47





10
(1.10)

10
(1.10)
Ignition: ON 11 - 14 V 1.1,
1.2

1.1   Voltage supply from:
Model 202 without control module box
Overvoltage protection relay module (K1)
Model 170, 210
Relay module (K40, K40/4)
Model 202, 208 with control module box
Passenger-side fuse and relay module box (K40/4)
Models 129, 140
Base module (N16/1)





N47

10
(1.10)
Ignition: ON 11 - 14 V Fuse on K1, (model 202 without control module box),
Fuse (F1) on K40 (170, 210),
Fuse (F1) on K40/4 (model 202 with control module box),
Fuse (F3) on N16/1 (models 129, 140),
Wiring,
K1 (model 202 without control module box),
K40, K40/4 (model 170, 210),
K40/4 (model 202, 208 with control module box),
N16/1 (models 129, 140)
1.2   Ground wire
Model 202 without control
module box
Model 202, 208 with control
module box
Model 140, 210
Model 129
Model 170

Model 202 without control
module box
Model 202, 208 with control
module box
Model 140, 210
Model 129
Model 170


W16/4

W29/2
W15/1
W27
W16




W16/4

W29/2
W15/1
W27
W16












N47

57
(2.23)








81
(2.47)
Ignition: OFF
Disconnect Traction control module (N47).
< 1 Wiring,
Model 202 without control module box
Ground, (right components compartment [W16/4]),
Model 202, 208: with control module box, Ground, (right "A" pillar) (W29/2),
Model 140, 210: Ground, (right footwell) (W15/1),
Model 129: Ground (control module box/control module) (W27),
Model 170: Ground, (component compartment) (W16).
2.0

Traction systems control
module (N47)
Circuit 30
Voltage supply


57
(2.23)
N47



82
(2.48)
Ignition: OFF 11 - 14 V Wiring,
Model 210 only:
Fuse (F1) on K40
Model 170.447 only:
Crash separation relay
module (K56).
3.0   Data bus instrument cluster (vehicles without CAN connection to instrument cluster only)

57
(2.23)
N47



7
(1.7)
Ignition: ON


3 - 4 V
A1e6/7/17/21/22/22/35/36: ON
Wiring,
(N47)
4.0   Diagnostic output


57
(2.23)
N47



9
(1.9)
Ignition: ON



10 - 14 V


Wiring,
(N47),
K40/4 (model 202, 208 with control module box)
5.0
ASR/ETS/ESP hydraulic unit (A7/3)
Voltage supply for solenoid valves



Bosch

57
(2.23)

Teves

57
(2.23)


57
(2.23)
N47












80
(2.46)


55
(2.21)


71
(2.37)
Ignition: On


Bosch

Teves



11 - 14 V

5 - 10 V
(voltage pulsed) or
11 - 14 V
Wiring,
Traction control module (N47)
6.0 High pressure/return pump relay (K20/1)
Voltage supply
Model 129,140, 202
(Bosch ABS, ETS, ASR; Teves ABS): (K20/1 or K40/2k4)
Model 210: (N65/k4 or K40/2k4)
Model 170, 202, 208 (Teves ETS, ASR): (A7/3n1)


57
(2.23)






57
(2.23)
N47









61
(2.27)






82
(2.48)
Ignition: ON
Bosch ABS, ETS ASR
Teves ABS

Teves ETS




Teves ASR


11 - 14 V


5 - 10 V
(voltage pulsed) or
11 - 14 V

5 - 10 V
(voltage pulsed) or
11 - 14 V
Wiring.
6.1
6.1   Bosch: ABS, ETS, ASR
Teves: ABS
Coil resistance


60
(2.26)
N47





61
(2.27)
Ignition: OFF
Disconnect traction control module (N47).

40 - 80 Wiring,
Models 129, 140, 202 (ABS): K20/1,
Models 170: N65k4,
Model 210: N65k4 or K40/2k4
7.0


Model 140, 210 with SPS:
SPS P-valve (Y10)
Coil resistance


35
(2.1)
N47







36
(2.2)
Ignition: OFF
Disconnect traction control module (N47).
3 - 8 Wiring,
SPS P-valve (Y10).
8.0
Models 129.076,
140.04/05/07
ABS lateral acceleration sensor (B24/2)
Voltage supply


57
(2.23)
N47



22
(1.22)
Ignition: ON
4.75 - 5.25 V N47
9.0 Models 129.076, 140.04/05/07
Master brake cylinder switchover valve (Y61)
Internal resistance


44
(2.10)
N47



43
(2.9)
Ignition: OFF
Disconnect traction control module (N47).
7 - 8 Wiring,
Y61
10.0   ETS and cruise control only, vehicles without CAN connection to instrument cluster
ETS signal


57
(2.23)
N47-2



26
(1.26)
Ignition: ON


Engine: at idle
< 1V ETS MIL (A1e35) ON


11 - 14 V
A1e35: OFF
Wiring,
N47-2
11.0

Left front axle VSS sensor (L6/1)
Internal resistance


77
(2.43)
N47



78
(2.44)
Ignition: OFF
Disconnect Traction control module (N47).


0.8 - 2.3 k
Wiring,
L6/1
11.1  

Insulation resistance


57
(2.23)
N47



77
(2.43)
Ignition: OFF
Disconnect control module (N47).


>20 k

Wiring,
L6/1
12.0   Left front axle VSS
sensor (L6/1)
Output


57
(2.23)
N47



1
(1.1)
Raise front of vehicle
Ignition: ON
Rotate left front tire by
hand (> 1 rev./sec.).



>3 V~
Wiring,
12.1,
N47
12.1   Load with control modules connected


57
(2.23)
N47



1
(1.1)
Ignition: OFF
Disconnect control module (N47).


> 5 k
Wiring,
Connected control modules,
11.0
13.0

Right front axle VSS
sensor (L6/2)
Internal resistance


52
(2.18)
N47



51
(2.17)
Ignition: OFF
Disconnect control module (N47).


0.8 - 2.3 k
Wiring,
L6/2
13.1  

Insulation resistance


57
(2.23)
N47



52
(2.18)
Ignition: OFF
Disconnect control module (N47).


> 20 k
Wiring,
L6/2
14.0   Right front axle VSS
sensor (L6/2)
Output


57
(2.23)
N47



2
(1.2)
Raise front of vehicle
Ignition: ON
Rotate right front tire by hand (> 1 rev./sec.).



> 3 V ~
Wiring,
14.1,
N47
14.1   Load with control modules connected


57
(2.23)
N47



2
(1.2)
Ignition: OFF
Disconnect control module (N47).


> 5 k
Wiring,
Connected control modules,
13.0
15.0

ABS:
VSS sensor (L6)
Internal resistance


13
(1.13)
N47



12
(1.12)
Ignition: OFF
Disconnect control module (N47).

0.6 - 1.8 k
Wiring,
L6/3,
15.1
15.1  

Insulation resistance


57
(2.23)
N47



13
(1.13)


Ignition: OFF
Disconnect control module (N47).


> 20 k
Wiring.
16.0

ASR or ETS:
Left rear axle
sensor (L6/3)
Internal resistance


13
(1.13)
N47



12
(1.12)
Ignition: OFF
Disconnect control module (N47).


0.6 - 1.8 k
Wiring,
L6/3,
16.1

16.1  

Insulation resistance


57
(2.23)
N47



3
(1.3)
Ignition: OFF
Disconnect control module (N47).


> 20 k
Wiring.
17.0   Left rear axle VSS
sensor (L6/3)


57
(2.23)
N47



3
(1.3)
Raise rear of vehicle.
Ignition: ON
Rotate left rear tire by hand (> 1 rev./sec.).


> 3 V ~
Wiring,
17.1
N47
17.1   Load with control modules connected


57
(2.23)
N47



3
(1.3)
Ignition: OFF
Disconnect control module (N47).


> 5 k
Wiring,
Connected control modules,
15.0
16.0
18.0   Left rear axle VSS
sensor (L6/3), ASR or ETS


57
(2.23)
N47



3
(1.3)
Raise rear of vehicle.
Ignition: ON
Rotate left rear tire by hand (> 1 rev./sec.).


> 3 V ~
Wiring,
18.1
N47
18.1   Load with control modules connected


57
(2.23)
N47



3
(1.3)
Ignition: OFF
Disconnect control module (N47).


> 5 k
Wiring,
Connected control modules,
15.0
16.0
19.0

ASR or ETS:
Right rear axle VSS
sensor L6/4,
Internal resistance


15
(1.15)
N47



14
(1.14)
Ignition: OFF
Disconnect control module (N47).

0.6 - 1.8 k
Wiring,
L6/4,
19.1
19.1  

Insulation resistance


57
(2.23)
N47



15
(1.15)


Ignition: OFF
Disconnect control module (N47).


> 20 k
Wiring.
20.0   VSS sensor status
Signal: Vehicle is stationary


57
(2.23)
N47




5
(1.5)


Engine: at idle


> 3 V ~
Wiring,
N47
21.0 Left front axle solenoid valve (release) (A7/3y6)
Internal resistance

Bosch
73
(2.39)

Teves

70
(2.36)
N47






80
(2.46)


55
(2.21)
Ignition: OFF
Disconnect control module (N47).


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

Bosch
72
(2.38)

Teves

80
(2.46)
N47






80
(2.46)


55
(2.21)
Ignition: OFF
Disconnect control module (N47).


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

Bosch
74
(2.40)


Teves

69
(2.35)
N47






80
(2.46)



55
(2.21)
Ignition: OFF
Disconnect control module (N47).


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

Bosch
71
(2.37)


Teves

74
(2.40)
N47






80
(2.46)



55
(2.21)
Ignition: OFF
Disconnect control module (N47).


2.8 - 6.6
Wiring,
A7/3
25.0 ABS: Rear axle solenoid valve (hold) (A7/3y20)
Internal resistance


Bosch
69
(2.35)


Teves

72
(2.38)
N47






80
(2.46)



55
(2.21)
Ignition: OFF
Disconnect control module (N47).


5.4 - 12.6
Wiring,
A7/3
26.0 ASR or ETS:
Left rear axle solenoid valve (hold) (A7/3y10)
Internal resistance

Bosch
69
(2.35)


Teves

72
(2.38)
N47






80
(2.46)



55
(2.21)
Ignition: OFF
Disconnect control module (N47).


5.4 - 12.6
Wiring,
A7/3
27.0 ABS: Rear axle solenoid valve (release) (A7/3y20)
Internal resistance

Bosch
70
(2.36)


Teves

73
(2.39)
N47






80
(2.46)



71
(2.21)
Ignition: OFF
Disconnect control module (N47).


2.8 - 6.6
Wiring,
A7/3
28.0 ASR or ETS:
Left rear axle solenoid valve (release) (A7/3y11)
ASR or ETS
Internal resistance

Bosch
70
(2.36)


Teves

73
(2.39)
N47





80
(2.46)



55
(2.21)

Ignition: OFF
Disconnect control module (N47).


2.8 - 6.6
Wiring,
A7/3
29.0 ASR or ETS:
Right rear axle solenoid
valve (hold) (A7/3y12)
ASR or ETS
Internal resistance

Bosch
64
(2.30)


Teves

62
(2.28)
N47






80
(2.46)



71
(2.37)
Ignition: OFF
Disconnect control module (N47).


5.4 - 12.6
Wiring,
A7/3
30.0 ASR or ETS:
Right rear axle solenoid
valve (release) (A7/3y13)
Internal resistance

Bosch
65
(2.31)


Teves

64
(2.30)
N47






80
(2.46)



71
(2.37)
Ignition: OFF
Disconnect control module (N47).


2.8 - 6.6
Wiring,
A7/3
31.0 ASR or ETS:
Switchover/solenoid
valve (A7/3y5)
Internal resistance

Bosch 62
(2.28)


Teves

65
(2.31)
N47






80
(2.46)



71
(2.37)
Ignition: OFF
Disconnect control module (N47).


5.4 - 12.6
Wiring,
A7/3
32.0 ASR or ETS:
Inlet solenoid
valve (A7/3y15)
ASR or ETS
Internal resistance

Bosch
63
(2.29)
N47





80
(2.46)
Ignition: OFF
Disconnect control module (N47).


2.8 - 6.6
Wiring,
A7/3