Isuzu Rodeo UE. Service manual - part 101

5A–27

BRAKE CONTROL SYSTEM

D08RX109

5A–28

BRAKE CONTROL SYSTEM

Connector List

No.

Connector face

No.

Connector face

B-19

H-13
H-14

C-4

H-26

C-5

I-1

C-13
C-33

I-18

C-16
C-36
E-28
E-30

C-34

F-4

H-5

H-12
H-15
H-25

5A–29

BRAKE CONTROL SYSTEM

Part Location

D08RX107

Legend

(1) Battery
(2) Fuse & Relay Box
(3) C–36
(4) C–5
(5) C–4
(6) H–12, 13, 14
(7) I–18
(8) Starter Switch
(9) I–1

(10) C–34

(11) F–4

(12) H–26
(13) H–25
(14) H–15
(15) C–16
(16) C–13
(17) H–5
(18) B–19
(19) E–30 (6VD1)
(20) E–28 (X22SE)
(21) 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 de-
tected by EHCU self-diagnosis.  Use the customer com-
plaint and a test to determine which symptom is present.
Then follow the appropriate flow chart listed below.

No

Symptom

Diagnostic Flow Charts

No.

Sym tom

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

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

Step

Action

Yes

No

1

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

Go to Step 2

Repair brake

parts.

Go to Step 8

2

Are axle parts installed normally?

Go to Step 3

Repair axle parts.

Go to Step 8

3

Is there play in each or any wheel speed sensor?

Repair wheel

speed sensor.

Go to Step 8

Go to Step 4

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

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

6

Is the input of 4WD controller normal?

Go to Step 7

Replace

controller or

repair harness.

Go to Step 7

7

Reconnect all components, ensure all components are properly
mounted.

Was this step finished?

Repeat the “Basic

diagnostic flow

chart”

Go to Step 7