Control Unit/Simulation - Front Wheels - BMW 745i Repair Instructions

06 ABS
BMW '7' series cars
ABS control unit No.
Control l unit/simulJ a tion . front wheels
0265 100002
U (Voltage) betw. leads 1 and 10
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Valve
Pressure buildup:
left ·drop:
retention:
right ·drop:
retention:
front left
<
0.1
4.5 ... 5.7
1.9 ... 2.3
<
0.1
-
-
<
0.1
-
-
.front right
<
0.1
- -
<
0.1
-
<
0.1
- -
4.5 ... 5.7
1.9 ... 2.3
rear left
<
0.1
-
-
<
0.1
- -
<
0.1
- -
<
0.1
-
<
0.1
-
-
Test 1. Connections needed: T·plug at A BS harness and ABS control unit
sequence: 2. Switch on ignition; note voltage between leads 1 and 10
>
10.8 V
rear right
<
0.1 A
-
-
<
0.1 A
- -
<
0.1 A
- -
<
0.1 A
-
-
<
0.1 A
-
-
3. ABS telltale lamp goes out and pressure build·up values appear (app. 4 s)
4. Next, press the
~
key; values appear for pressure drop and retention at front left .
5. Next, press the
IBl
key; values appear for pressure drop and retention at front right
6. Compare with nominal values
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If nominal values are not reached: chec' k battery, test steps 02/04/05 hydro·aggregate, detective ASS control unit
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Further information on workshop manual microfiche, Group 34, job Nos. 34 52 510 , 34 51 520
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