Opel Frontera UE. Manual - part 724

 

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Opel Frontera UE. Manual - part 724

 

 

BRAKE CONTROL SYSTEM

5A–27

Connector List

No.

Connector face

No.

Connector face

B-19

F-4

B-23

H-5

C-4

H-15
H-25

C-5

H-14

C-6

H-19

C-13
C-33

H-26

C-16
C-36

E-28
E-30

I-1

C-34

I-2

5A–28

BRAKE CONTROL SYSTEM

I-18

No.

Connector face

No.

Connector face

BRAKE CONTROL SYSTEM

5A–29

Part Location

D08RX217

Legend

EndOFCallout

(1) C–36
(2) C–5
(3) C–4
(4) H–14, H–19
(5) Relay & Fuse Box
(6) I–1
(7) I–2
(8) B–23
(9) B–19

(10) F–4
(11) H–26
(12) H–15

(13) H–25
(14) C–16
(15) C–13
(16) H–5
(17) E–30 (6VD1)
(18) E–28 (X22SE)
(19) I–18
(20) C–34
(21) C–6
(22) C–33

5A–30

BRAKE CONTROL SYSTEM

Symptom Diagnosis

The symptoms that cannot be indicated by warning light 
can be divided in the following five categories:

1. ABS works frequently but vehicle does not 

decelerate.

2. Uneven braking occurs while ABS works.

3. The wheels lock during braking.

4. Brake pedal feel is abnormal.

5. Braking sound (from EHCU) is heard while not 

braking.

These are all attributable to problems which cannot be 
detected by EHCU self-diagnosis.   Use the customer 
complaint and a test to determine which symptom is 
present.   Then follow the appropriate flow chart listed 
below.

Chart A-1 ABS Works Frequently But Vehicle Does Not Decelerate

No.

Symptom

Diagnostic Flow Charts

Without TECH 2

With TECH 2

1

ABS works frequently but vehicle does not decelerate.

Chart A-1

Chart TA-1

2

Uneven braking occurs while ABS works.

Chart A-2

Chart TA-2

3

The wheels are locked.

Chart A-3

Chart TA-3

4

Brake pedal feel is abnormal.

Chart A-4

5

Braking sound (from EHCU) is heard while not braking. 

Chart A-5

Chart TA-5

Step

Action

Yes

No

Is braking force distribution normal between front and rear of 
vehicle?

Go to Step 2

Repair brake 

parts.

Go to Step 8

Are axle parts installed normally?

Go to Step 3

Repair axle 

parts.

Go to Step 8

Is there play in each or any wheel speed sensor?

Repair wheel 

speed sensor.

Go to Step 8

Go to Step 4

Is there damage, or powered iron sticking to each or any wheel 
speed sensor/sensor ring?

Replace sensor 

or sensor ring.

Go to Step 8

Go to Step 5

Is the output of each wheel speed sensor normal? (Refer to chart 
C-1 or TC-1)

Go to Step 6

Replace wheel 

speed sensor or 

repair harness.

Go to Step 7

Is the input of 4WD controller normal?

Go to Step 7

Replace 

controller or 

repair harness.

Go to Step 7

Reconnect all components, ensure all components are properly 
mounted.
Was this step finished?

Repeat the “Basic  

diagnostic flow 

chart"

Go to Step 7

 

 

 

 

 

 

 

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