relay AUDI A4 1999 B5 / 1.G Brakes Basic Setting 04 Workshop Manual

01-274
Test table: display group 6 Read measuring value
block 6
Indicated on display
0 volts to 18
volts
on
or
off
on
or
off 0 ...
131071


Workshop code:

The workshop code indicates the last workshop that executed the "Login Procedure" (function
11) under address word 03, "Brake electronics" page 01
-237
.
If no code is displayed, the "Login Procedure" under address word 03 "Brake Electronics" has
not been carried out yet.

Voltage at motor for ABS return flow pump:

off specified value, there is no voltage at the motor for the ABS return flow pump. on not permitted during "Read measuring value block", there is voltage at the motor for the ABS
return flow pump.
- Carry out "Electrical test", steps 12, 23 and 24.

ABS solenoid valve relay:

on specified value, relay was activated by ABS control module -J104- during ignition on. off not permitted during "Read measuring value block", the relay was not activated during "ignition on".
- Carry out "Electrical test", steps 11 and 22.
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01-278

Output Diagnostic Test Mode (DTM)
(function 03)

Output Diagnostic Test Mode (DTM) is used to
check the function of actuators. Actuators are
also called actors. These are components that
the control module activates when it reacts to the
signals sent by sensors, e.g. solenoid valves,
relays and pump motors.

Note:

Output Diagnostic Test Mode (DTM) only
functions on vehicles containing control
modules with no. 8D0 407 389 A/D/E.
For control modules with no. 4B0 907 389,
output Diagnostic Test Mode (DTM) is not
possible.

Output Diagnostic Test Mode (DTM) can and
must only be selected once after the ignition
is switched on.
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01-279
"Function of actuators" includes all functions and
properties of an actuator under operating
conditions. This means, for example:

An electrically operated hydraulic valves that
opens and closes when activated by the control
module.

The relay of an electrical motor when activated
by the control module. The motor switches on
and carry outs the task.
Before initiating the output Diagnostic Test Mode
(DTM), make sure there are no electrical
malfunctions in the system you wish to test. This
will enable you to recognize any mechanical
problems. Perform a guided troubleshooting
before starting output Diagnostic Test Mode
(DTM) page 01
-19
.
Pa
ge 43 of 64 Basic settin
g (scan tool function 04
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11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.15