Opel Frontera UBS. Manual - part 2030

 

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Opel Frontera UBS. Manual - part 2030

 

 

4D2–43

TRANSFER CASE (TOD)

Special Tools

ILLUSTRATION

TOOL NO.

TOOL NAME

5–8840–0133–0

(J–8614–11)

Flange Holder

5–8840–2412–0

(J–42804)

Rear Oil Seal Installer

5–8840–2293–0

(J–39209)

Punch

5–8840–2409–0

(J–42805)

Bearing Remover

5–8840–0084–0

(J–2619–01)

Slide Hammer

5–8840–0015–0

(J–22912–01)

Bearing Remover

ILLUSTRATION

TOOL NO.

TOOL NAME

5–8840–2413–0

(J–42806)

Ring Gear Replacer

5–8840–2410–0

(J–42807)

Front Out Oil Seal

Installer

5–8840–2411–0

(J–42808)

Input Shaft Oil Seal

Installer

5–8840–2416–0

(J–42809)

Ring Gear Installer

5A–1

BRAKE CONTROL SYSTEM

BRAKES

CONTENTS

Brake Control System

5A

. . . . . . . . . . . . . . . . . . . . 

Anti–lock Brake System

5B

. . . . . . . . . . . . . . . . . . 

Power–Assisted Brake System

5C

. . . . . . . . . . . . 

Parking Brakes

5D

. . . . . . . . . . . . . . . . . . . . . . . . . 

BRAKE CONTROL SYSTEM

CONTENTS

Service Precaution

5A–2

. . . . . . . . . . . . . . . . . . . . . . 

General Description

5A–3

. . . . . . . . . . . . . . . . . . . . . 

System Components

5A–3

. . . . . . . . . . . . . . . . . . . 

Electronic Hydraulic Control Unit (EHCU)

5A–3

ABS Warning Light

5A–4

. . . . . . . . . . . . . . . . . . . . 

Wheel Speed Sensor

5A–4

. . . . . . . . . . . . . . . . . . 

G-Sensor

5A–4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Normal and Anti-lock Braking

5A–4

. . . . . . . . . . . 

Brake Pedal Travel

5A–4

. . . . . . . . . . . . . . . . . . . . 

Acronyms and Abbreviations

5A–4

. . . . . . . . . . . . 

General Diagnosis

5A–5

. . . . . . . . . . . . . . . . . . . . . . . 

General Information

5A–5

. . . . . . . . . . . . . . . . . . . . 

ABS Service Precautions

5A–5

. . . . . . . . . . . . . . . 

Computer System Service Precautions

5A–5

. . . 

General Service Precautions

5A–5

. . . . . . . . . . . . 

Note on Intermittents

5A–5

. . . . . . . . . . . . . . . . . . . 

Test Driving ABS Complaint Vehicles

5A–6

. . . . . 

“ABS” Warning Light

5A–6

. . . . . . . . . . . . . . . . . . . 

Normal Operation

5A–6

. . . . . . . . . . . . . . . . . . . . . 

Basic Diagnostic Flow Chart

5A–6

. . . . . . . . . . . . 

Basic Inspection Procedure

5A–7

. . . . . . . . . . . . . 

Tech 2 Scan Tool

5A–8

. . . . . . . . . . . . . . . . . . . . . . 

Getting Started

5A–9

. . . . . . . . . . . . . . . . . . . . . . . . 

Operating Procedure

5A–10

. . . . . . . . . . . . . . . . . . . 

Data List

5A–11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

EHCU Connector Pin-out Checks

5A–12

. . . . . . . . 

Circuit Diagram (LHD model / 6VD1 and
 4JG2)

5A–13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Circuit Diagram (LHD model / 4JG2)

5A–14

. . . . . 

Circuit Diagram (LHD model / 4JG2)

5A–15

. . . . . 

Circuit Diagram (LHD model / 6VD1)

5A–16

. . . . . 

Circuit Diagram (LHD model / 6VD1)

5A–17

. . . . . 

Connector List (LHD model)

5A–18

. . . . . . . . . . . . 

Part Location (LHD model)

5A–20

. . . . . . . . . . . . . . 

Circuit Diagram (RHD model / 6VD1 and
 4JG2)

5A–21

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Circuit Diagram (RHD model / 4JG2)

5A–22

. . . . . 

Circuit Diagram (RHD model / 4JG2)

5A–23

. . . . . 

Circuit Diagram (RHD model / 6VD1)

5A–24

. . . . . 

Circuit Diagram (RHD model / 6VD1)

5A–25

. . . . . 

Circuit Diagram (RHD model / 6VE1 and
 4JX1)

5A–26

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Circuit Diagram (RHD model / 4JX1)

5A–27

. . . . . 

Circuit Diagram (RHD model / 4JX1)

5A–28

. . . . . 

Circuit Diagram (RHD model / 6VE1)

5A–29

. . . . . 

Circuit Diagram (RHD model / 6VE1)

5A–30

. . . . . 

Connector List (RHD model)

5A–31

. . . . . . . . . . . . 

Part Location (RHD model)

5A–34

. . . . . . . . . . . . . 

Symptom Diagnosis

5A–35

. . . . . . . . . . . . . . . . . . . . . 

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

5A–35

. . . . . . . . . . . 

Chart TA-1 ABS Works Frequently But
 Vehicle Does Not Decelerate (Use
 TECH 2)

5A–36

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart A-2 Uneven Braking Occurs While
 ABS Works

5A–36

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart A-3, TA-3 The Wheels Are Locked

5A–36

Chart A-4 Brake Pedal Feed Is Abnormal

5A–37

Chart A-5, TA-5 Braking Sound (From
 EHCU) Is Heard While Not Braking

5A–38

. . . . . . 

Diagnostic Trouble Codes

5A–39

. . . . . . . . . . . . . . . . 

Diagnosis By “ABS” Warning Light
 Illumination Pattern

5A–40

. . . . . . . . . . . . . . . . . . . . . 

Diagnostic Trouble Codes (DTCs)

5A–40

. . . . . . . 

Chart B-1 With the key in the ON position
 (Before starting the engine).  Warning light
 (W/L) is not activated.

5A–43

. . . . . . . . . . . . . . . . . 

Chart B-2 EHCU Abnormality (DTC 14)

5A–43

. . . 

Chart B-3 Power Voltage Drop (DTC 15)

5A–44

. . 

Chart B-4 CLASS-2 Communication Line
 Abnormality (DTC 16)

5A–44

. . . . . . . . . . . . . . . . . 

Chart B-5 G-Sensor Circuit (DTC 21)

5A–45

. . . . . 

Chart B-6 Abnormal Transmission Input
 (DTC 23)

5A–46

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-7 Transfer Monitor (DTC 24)

5A–47

. . . . . 

Chart B-8 EHCU Pump Motor And Motor
 Relay Circuit (DTC 32)

5A–47

. . . . . . . . . . . . . . . . . 

Chart B-9 EHCU Pump Valve And Valve
 Relay Circuit (DTC 35)

5A–47

. . . . . . . . . . . . . . . . . 

Chart B-10 FL Isolation Solenoid Valve
 Abnormality (DTC 41)

5A–48

. . . . . . . . . . . . . . . . . 

Chart B-11 FL Dump Solenoid Valve
 Abnormality (DTC 42)

5A–48

. . . . . . . . . . . . . . . . . 

Chart B-12 FR Isolation Solenoid Valve
 Abnormality (DTC 43)

5A–48

. . . . . . . . . . . . . . . . . 

Chart B-13 FR Dump Solenoid Valve
 Abnormality (DTC 44)

5A–49

. . . . . . . . . . . . . . . . . 

Chart B-14 Rear Isolation Solenoid Valve
 Abnormality (DTC 45)

5A–49

. . . . . . . . . . . . . . . . . 

Chart B-15 Rear Dump Solenoid Valve
 Abnormality (DTC 46)

5A–49

. . . . . . . . . . . . . . . . . 

SECTION

5A–2

BRAKE CONTROL SYSTEM

Chart B-16 FL Speed Sensor Disconnection
 (DTC 51)

5A–50

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-17 FR Speed Sensor Disconnection
 (DTC 52)

5A–50

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-18 RL Speed Sensor Disconnection
 (DTC 53)

5A–51

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-19 RR Speed Sensor Disconnection
 (DTC 54)

5A–51

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-20 FL Speed Sensor Short Circuit
 (DTC 61)

5A–52

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-21 FR Speed Sensor Short Circuit
 (DTC 62)

5A–53

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-22 RL Speed Sensor Short Circuit
 (DTC 63)

5A–54

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-23 RR Speed Sensor Short Circuit
 (DTC 64)

5A–55

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart B-24 Sensor Signal Input Abnormality
 (DTC 65)

5A–56

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Sensor Signal Abnormality Criteria using
 TECH 2

5A–56

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Unit Inspection Procedure

5A–57

. . . . . . . . . . . . . . . . 

Chart C-1-1 FL Sensor Output Inspection
 Procedure

5A–57

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart C-1-2 FR Sensor Output Inspection
 Procedure

5A–58

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart C-1-3 RL Sensor Output Inspection
 Procedure

5A–58

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart C-1-4 RR Sensor Output Inspection
 Procedure

5A–59

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart TC-1 Sensor Output Inspection
 Procedure (Use TECH 2)

5A–59

. . . . . . . . . . . . . . 

Chart C-2 Transmission Input Inspection
 Procedure

5A–60

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Chart TC-2 Transmission Input Inspection
 Procedure (Use TECH 2)

5A–61

. . . . . . . . . . . . . . 

Special Tools

5A–62

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Service Precaution

WARNING: IF SO EQUIPPED WITH A
SUPPLEMENTAL RESTRAINT SYSTEM (SRS),
REFER TO THE SRS COMPONENT AND WIRING
LOCATION VIEW IN ORDER TO DETERMINE
WHETHER YOU ARE PERFORMING SERVICE ON OR
NEAR THE SRS COMPONENTS OR THE SRS
WIRING. WHEN YOU ARE PERFORMING SERVICE
ON OR NEAR THE SRS COMPONENTS OR THE SRS
WIRING, REFER TO THE SRS SERVICE
INFORMATION. FAILURE TO FOLLOW WARNINGS
COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

5A–3

BRAKE CONTROL SYSTEM

General Description

The Anti-lock Brake System (ABS) works on all four
wheels. A combination of wheel speed sensor and
Electronic Hydraulic Control Unit (EHCU) can determine
when a wheel is about to stop turning and adjust brake
pressure to maintain best braking.

This system helps the driver maintain greater control of
the vehicle under heavy braking conditions.

C05RW027

Legend

(1) With P&B Valve Model
(2) With LSPV Model
(3) Electronic Hydraulic Control Unit (EHCU)
(4) Front Wheel Speed Sensor
(5) Rear Wheel Speed Sensor

(6) G-Sensor
(7) Proportioning and Bypass (P&B) Valve
(8) Load Sensing Proportioning Valve (LSPV)
(9) Electronic Line

(10) Hydraulic Line

System Components

Electronic Hydraulic Control Unit (EHCU), four Wheel
Speed Sensors, Warning Light, and G-sensor.

Electronic Hydraulic Control Unit (EHCU)

The EHCU consists of ABS control circuits, fault detector,
and a fail-safe.  It drives the hydraulic unit according to the
signal from each sensor, cancelling ABS to return to

 

 

 

 

 

 

 

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