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Diagnostic Manual, Chassis and Drivetrain,
Volume 3

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LOCATION:    11.1 BAS   >   23 Electrical Test Program - Test


Electrical Test Program - Test

Test scope
Test connection
Test condition Nominal value Possible cause/Remedy
1.0
BAS control module (N48)
Circuit 87
Voltage supply


1
(1.1)
N48



3 (1.3)
Ignition: ON 11 - 14 V 1.1,
1.2
1.1   Voltage supply from:
Models 129, 140
Base module (N16/1)
Models 202, 208, 210
Driver-side fuse and relay module box (K40/2)




N48
3 (1.3)
Ignition: ON 11 - 14 V Wiring,
Model 129, 140:
Fuse (F3) on N16/1,
N16/1,
DM, Chassis & Drivetrain, Vol. 1, sections 1.1, 23
1.2   Ground wire

Model 140
Model 170
Model 129
Models 202, 208
Model 210


W15
W35
W27
W29/2
W16/3


N48

1
(1.1)
Ignition: OFF
Disconnect BAS control module (N48).
< 1 Wiring,
Model 140: Ground (electronics ground output-right
footwell) (W15).
Model 129: Ground (control module box/module box) (W27).
Model 170: Ground (left front spring tower) (W35).
Models 202, 208: Ground (right A-pillar) (W29/2).
Model 210: Ground (output ground - left wheel housing ground) (W16/3).
2.0

BAS control module (N48)
Circuit 30
Voltage supply


1
(1.1)
N48



4
(1.4)
Ignition: OFF 11 - 14 V Wiring.
3.0   Diagnosis output


1
(1.1)
N48



6
(1.6)


Ignition: ON


1 - 2 V

Wiring,
BAS control module (N48).
4.0 Solenoid valve
(BAS) (A7/7y1)
Voltage supply


1
(1.1)
N48



12
(2.6)
Ignition: ON 4.0 - 5.5 V 4.1,
Wiring,
BAS control module (N48).
4.1   Resistance


9
(2.3)
N48



12
(2.6)
Ignition: OFF
Disconnect BAS control module (N48).
1 - 2
Wiring,
Brake booster (BAS) (A7/7).
5.0


Membrane travel sensor (BAS) (A7/7b1)
Voltage supply


1
(1.1)
N48



13
(3.1)
Ignition: ON





4.75 - 5.25 V
Wiring,
BAS control module (N48).
5.1  

Ground


14
(3.2)
N48




4
(1.4)


Ignition: ON


11 - 14 V