2004 ISUZU TF SERIES Workshop Manual

Page 353 of 4264

ISUZU TF SERIES 2004  Workshop Manual BRAKE CONTROL SYSTEM   5A-37
 
Basic Inspection Procedure 
1. Basic Inspection of Service Brake 
Step Action 
Value(s) Yes  No 
1  Is the fluid level normal? 
-  Go to Step 2 Replenish with 
fluid 
Go

Page 354 of 4264

ISUZU TF SERIES 2004  Workshop Manual 5A-38   BRAKE CONTROL SYSTEM
 
Wheel Speed Sensor Inspection Procedure 
Procedure 
 1.Ignition "OFF". 
  2.Disconnect the each wheel speed sensors. 
  3.Check the voltage at sensor harness connector.

Page 355 of 4264

ISUZU TF SERIES 2004  Workshop Manual BRAKE CONTROL SYSTEM   5A-39
 
Symptom Diagnosis 
The symptoms that cannot be indicated by warning 
lamp can be divided in the following five categories: 
  1. ABS works frequently but vehicle does no

Page 356 of 4264

ISUZU TF SERIES 2004  Workshop Manual 5A-40   BRAKE CONTROL SYSTEM
 
Uneven Braking Occurs While ABS Works 
 
Step Action 
Value(s) Yes No 
1  Is there play in each or any sensor? 
- Repair. 
Go to Step 5 Go to Step 2 
2  Damage or powder

Page 357 of 4264

ISUZU TF SERIES 2004  Workshop Manual BRAKE CONTROL SYSTEM   5A-41
 
Brake Pedal Feed Is Abnormal 
 
Step Action 
Value(s) Yes  No 
1  Is the stop light actuated when the brake pedal is 
depressed? 
-  Go to Step 2  Go to Step 3 
2    1.

Page 358 of 4264

ISUZU TF SERIES 2004  Workshop Manual 5A-42   BRAKE CONTROL SYSTEM
 
Braking Sound (From EHCU) Is Heard While Not Braking 
 
Step Action  Value(s) Yes No 
1  Is this the first vehicle start after engine start? 
- It is self 
checking 
sou

Page 359 of 4264

ISUZU TF SERIES 2004  Workshop Manual BRAKE CONTROL SYSTEM   5A-43
 
No ABS Warning Lamp 
 
Step Action 
Value(s) Yes  No 
1  Check the meter fuse for the instrument cluster 
ignition feed circuit. 
Is the fuse OK?  -  Go to Step 3  Go to

Page 360 of 4264

ISUZU TF SERIES 2004  Workshop Manual 5A-44   BRAKE CONTROL SYSTEM
 
DTC C0221 (Flash Code 21) Front Right Wheel Speed Sensor Short Circuit or 
Circuit Open 
 
 LTW35AMF000101 
 
Step Action 
Value(s) Yes  No 
1 Was the “Basic Diagnosti