Isuzu Rodeo UE. Service manual - part 108

5A–55

BRAKE CONTROL SYSTEM

Chart C-1-2 FR Sensor Output Inspection Procedure

Step

Action

Yes

No

1

1. Turn the key off.
2. Disconnect coil integrated module connector.
3. Jack up the vehicle with all four wheels off the ground.

Measure the AC voltage between coil integrated module
connector terminals while turning FR wheel at a speed of 1
RPS:

Is the check between coil integrated module connector (C-4)
terminals 3 and 11 than under 200 mV?

Go to Step 2

OK.

Go to Step 3

2

1. Disconnect the wheel speed sensor.
2. Measure resistance between the wheel speed sensor

connector terminals 1 and 2.

Is the check between connector (C-33) terminals 1 and 2 within
2.0k - 2.8k ohms?

Connector is

faulty, or open or

short circuit of

harness between

wheel speed

sensor connector

and coil

integrated

module.

Inspect and

correct the

connector or

harness.

Go to Step 3

Wheel speed

sensor is faulty.

Replace the

wheel speed

sensor.

Go to Step 3

3

Reconnect all components, ensure all components are properly
mounted.

Was this step finished?

Repeat the “Basic

diagnostic flow

chart”

Go to Step 3

Chart C-1-3 Rear Sensor Output Inspection Procedure

Step

Action

Yes

No

1

1. Turn the key off.
2. Disconnect coil integrated module connector.
3. Jack up the vehicle with all four wheels off the ground measure

the AC voltage between coil integrated module connector
terminals while turning Rear wheel at a speed of 1 RPS:

Is the check between coil integrated module connector (C-4)
terminals 4 and 12 than under 200 mV?

Go to Step 2

OK.

Go to Step 3

2

1. Disconnect the wheel speed sensor.
2. Measure resistance between the wheel speed sensor

connector terminals 1 and 2.

Is the check between connector (F-4) terminals 1 and 2 within
1.2k - 2.0k ohms?

Connector is

faulty, or open or

short circuit of

harness between

wheel speed

sensor connector

and coil

integrated

module.

Inspect and

correct the

connector or

harness.

Go to Step 3

Wheel speed

sensor is faulty.

Replace the

wheel speed

sensor.

Go to Step 3

3

Reconnect all components, ensure all components are properly
mounted.

Was this step finished?

Repeat the “Basic

diagnostic flow

chart”

Go to Step 3

5A–56

BRAKE CONTROL SYSTEM

Chart TC-1 Sensor Output Inspection Procedure

Step

Action

Yes

No

1

1. Connect TECH 2.
2. Check the wheel speed of each sensor by Data List.

Is the vehicle speed normal?

Go to Step 6

Go to Step 2

2

Check the sensor harness for suspected disconnection (check
while shaking harness/connector).

Is the sensor harness connection normal?

Replace speed

sensor.

Go to Step 4

Repair.

Go to Step 3

3

Check the wheel speed of each sensor by Data List.

Is the vehicle speed normal?

Go to Step 6

Go to Step 4

4

Check the sensor rotor.

Is the sensor rotor normal?

Replace speed

sensor.

Go to Step 5

Replace sensor

rotor.

Go to Step 5

5

Check the harness between coil integrated module and speed
sensor.

Is the harness connection normal?

Go to Step 6

Repair harness or

connector

between coil

integrated

module and

speed sensor.

Go to Step 6

6

Reconnect all components, ensure all components are properly
mounted.

Was this step finished?

Repeat the “Basic

diagnostic flow

chart”

Go to Step 6

5A–57

BRAKE CONTROL SYSTEM

Special Tools

ILLUSTRATION

TOOL NO.

TOOL NAME

J–35616

Connector test adapter

kit

J–39200

High impedance

multimeter

7000086–ISU

Tech 2 Set

(1) PCMCIA Card

(2) SAE 16/19 Adapter

(3) DLC Cable

(4) Tech 2

5B–1

ANTI–LOCK BRAKE SYSTEM

RODEO

BRAKES

ANTI-LOCK BRAKE SYSTEM

CONTENTS

Service Precaution

5B–1

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

Electronic Hydraulic Control Unit

5B–2

. . . . . . . . . . 

Electronic Hydraulic Control Unit and
 Associated Parts

5B–2

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

Removal

5B–2

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

Disassembled View

5B–3

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

Disassembly

5B–3

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

Reassembly

5B–3

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

Installation

5B–3

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

Front Wheel Speed Sensor

5B–4

. . . . . . . . . . . . . . . 

Front Wheel Speed Sensor and Associated
 Parts

5B–4

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

Removal

5B–4

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

Inspection and Repair

5B–4

. . . . . . . . . . . . . . . . . . 

Installation

5B–4

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

Rear Wheel Speed Sensor

5B–5

. . . . . . . . . . . . . . . 

Removal

5B–5

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

Inspection and Repair

5B–5

. . . . . . . . . . . . . . . . . . 

Installation

5B–5

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

Service Precaution

WARNING: THIS VEHICLE HAS 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.