2004 ISUZU TF SERIES Workshop Manual

check transmission fluid diagram fuel fill door release change wheel torque rims

Page 345 of 4264

ISUZU TF SERIES 2004 Workshop Manual BRAKE CONTROL SYSTEM 5A-29

Dump Valve Test
Purpose: The purpose of this test is to detect brake
pipe and valve line harness wire for wrong connections
and valve trouble.
This test will help you

Page 346 of 4264

ISUZU TF SERIES 2004 Workshop Manual 5A-30 BRAKE CONTROL SYSTEM

Diagnostic Trouble Codes
Choose and trace an appropriate flowchart by the
numbers listed below to find fault and repair.
Note:
DTC cannot be erased when the DTC is

5A-30 BRAKE CONTROL SYSTEM

Diagnostic Trouble Codes
Choose and trace an appropriate flowchart by the
numbers listed below to find fault and repair.
Note:
DTC cannot be erased when the DTC is a present.

Warning Lamp System Control Main Items
DTC
(Flash
Code) Description
ABS Brake
(EBD)ABS EBD
-
(12) Normal Condition

-
C0221
(21) Front Right Wheel Speed Sensor Short
Circuit or Circuit Open
*A
Sensor or Wiring
C0222
(22) Front Right Wheel Speed Sensor
Incorrect Signal *B
A
Sensor or install condition
C0223
(23) Front Right Wheel Speed Sensor Signal
- Tooth Chipping
*A
Sensor Rotor or install
condition
C0225
(25) Front Left Wheel Speed Sensor Short
Circuit or Circuit Open
*A
Sensor or Wiring
C0226
(26) Front Left Wheel Speed Sensor
Incorrect Signal *B
*A
Sensor or install condition
C0227
(27) Front Left Wheel Speed Sensor Signal -
Tooth Chipping
*A
Sensor Rotor or install
condition
C0231
(31) Rear Right Wheel Speed Sensor Short
Circuit or Circuit Open
*A
Sensor or Wiring
C0232
(32) Rear Right Wheel Speed Sensor
Incorrect Signal *B
*A
Sensor or install condition
C0233
(33) Rear Right Wheel Speed Sensor Signal
- Tooth Chipping
*A
Sensor Rotor or install
condition
C0235
(35) Rear Left Wheel Speed Sensor Short
Circuit or Circuit Open
*A
Sensor or Wiring
C0236
(36) Rear Left Wheel Speed Sensor
Incorrect Signal *B
*A
Sensor or install condition
C0237
(37) Rear Left Wheel Speed Sensor Signal -
Tooth Chipping
*A
Sensor Rotor or install
condition
C0238
(38) Tire Diameter Error

Vehicle , Sensor or Tire
C0241
(41) Front Right Isolation Solenoid Circuit
Open or Shorted to Ground

Solenoid (EHCU)
C0242
(42) Front Right Dump Solenoid Circuit
Open or Shorted to Ground

Solenoid (EHCU)
C0243
(43) Front Right Isolation Solenoid Circuit
Shorted to Battery

Solenoid (EHCU)
C0244
(44) Front Right Dump Solenoid Circuit
Shorted to Battery

Solenoid (EHCU)
C0245
(45) Front Left Isolation Solenoid Open Or
Shorted to Ground

Solenoid (EHCU)
C0246
(46) Front Left Dump Solenoid Circuit Open
Or Shorted to Ground

Solenoid (EHCU)
C0247
(47) Front Left Isolation Solenoid Circuit
Shorted to Battery

Solenoid (EHCU)

Page 347 of 4264

ISUZU TF SERIES 2004 Workshop Manual BRAKE CONTROL SYSTEM 5A-31

Warning Lamp System Control Main Items DTC
(Flash
Code) Description
ABS Brake
(EBD)ABS EBD
C0248
(48) Front Left Dump Solenoid Circuit
Shorted to Battery

Page 348 of 4264

ISUZU TF SERIES 2004 Workshop Manual 5A-32 BRAKE CONTROL SYSTEM

Diagnosis By “ABS” Warning Lamp
Illumination Pattern
In the event that there is abnormality in the “ABS”
warning Lamp illumination pattern while the key is

Page 349 of 4264

ISUZU TF SERIES 2004 Workshop Manual BRAKE CONTROL SYSTEM 5A-33

How to display and erase DTCs:
Note:
DTCs can be displayed also by TECH 2 use
“Diagnostic Trouble Codes“ mode.
1. How to start DTC display:
Confirm that

Page 350 of 4264

ISUZU TF SERIES 2004 Workshop Manual 5A-34 BRAKE CONTROL SYSTEM

4. Notes
If the following should occur during Diagnostic
Trouble Code (DTC) display, the display will be
discontinued. After initial check, the status that
is u

Page 351 of 4264

ISUZU TF SERIES 2004 Workshop Manual BRAKE CONTROL SYSTEM 5A-35

Basic Diagnostic Flow Chart

RTW45AMF000101

Step Action Value(s) Yes No
1 1. Ignition “ON,”engine “OFF.”
2. Observe the ABS warning lamp.
Note: If

Page 352 of 4264

ISUZU TF SERIES 2004 Workshop Manual 5A-36 BRAKE CONTROL SYSTEM

Step Action Value(s) Yes No
4 1. Check the EHCU circuit for an open, short to
ground, or short to voltage. Also, check the EHCU
ignition feed circuit for an open

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