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Test readings, control moduleconnections

Test readings, control module connections


Scope



Test readings and instructions for measuring signals and signal levels on the ABS control module are given in the following pages.

Points to remember:


• Readings must be taken with a BOB (Break-Out Box) connected between the control module and the control module's connector.

• Some voltage levels must be regarded as guiding values. Use your common sense when judging whether a reading is correct or not.

• If any test reading is incorrect, use the wiring diagram to trace the leads, connectors or components which you consider ought to be checked more thoroughly.

• Page references in the table refer to the page on which the description of operation of the signal concerned will be found, and also to the fault diagnosis schedule containing a complete description of the diagnostic procedure to be followed.


> = Greater than; < = Less than; » = Approximately equal to; ∼ = Alternating current

Pin

Colour

Component/Function

in/Out

Test condition

Test reading

Across X- Y

Function Page

Fault diagnosis Page

1

GY/GN

ABS lamp

Out





1-3



,

2



Not used













3



Not used













4

GN

Wheel sensors FL Signal input

In

Rotate wheel 1 rev/sec.

>100mV∼

4-5





5

GN

Wheel sensor FL Reference ground

In

Rotate wheel 1 rev/sec.

>100mV∼

5-4





6

BN/RD

Wheel sensor RR Signal input

In

Rotate wheel 1 rev/sec.

>100mV∼

6-18





7

GN/BN

Wheel speed FR

Out

Rotate wheel

0/10 V

7-B-





8



Not used













9

BU/WH

Wheel sensor RL Reference ground

In

Rotate wheel 1 rev/sec.

>100mV∼

9-10





10

BU/WH

Wheel sensor RL Signal input

In

Rotate wheel 1 rev/sec.

>100mV∼

10-9





11

WH/BK

Data link connector

In Out

Ignition on, ISAT ST connected

10 V

11-B-





12



Not used













13



Not used













14



Not used













15



Not used













16



Not used













17

BK/GN

Wheel speed FL

Out

Rotate wheel

0/10 V

17-B-





18

BN/RD

Wheel sensor RR Reference ground

In

Rotate wheel 1 rev/sec.

>100mV∼

18-6





19

YE/BN

Wheel speed RR

Out

Rotate wheel

0/10 V

19-B-





20

GN/RD

Wheel sensor FR Signal input

In

Rotate wheel 1 rev/sec.

>100mV∼

20-21





21

GN/RD

Wheel sensor FR Reference ground

In

Rotate wheel 1 rev/sec.

>100mV∼

21-20





22

OG/WH

Wheel speed RL

Out

Rotate wheel

0/10 V

22-B-





23

WT

Brake light switch

In

Brake activated

Batt+

23-B-





24



Not used













25



Not used