2002 ISUZU AXIOM Service Repair Manual

Page 649 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±30BRAKE 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
decele

Page 650 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±31
BRAKE CONTROL SYSTEM
Chart TA-1 ABS Works Frequently But Vehicle Does Not Decelerate (Use TECH 2)
StepActionYe sNo
11. Connect TECH 2.
2. Make sure of the output conditions of each sensor.
Is t

Page 651 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±32BRAKE CONTROL SYSTEM
Chart A-3, TA-3  The Wheels Are Locked
StepActionYe sNo
1Is ABS working?Go to Step 2Go to Step 4
2Is vehicle speed under 10 km/h (6mph)?Go to Step 3Normal.
3Is sensor output

Page 652 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±33
BRAKE CONTROL SYSTEM
Chart A-5, TA-5 Braking Sound (From EHCU) Is Heard While Not Braking
StepActionYe sNo
1Is this the first vehicle start after engine start?Normal.
(It is self
checking sound

Page 653 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±34BRAKE CONTROL SYSTEM
Diagnostic Trouble Codes
Choose and trace an appropriate flowchart by the
numbers listed below to find fault and repair.
Code
ChartFlash outSerial
CommunicationsDiagnosisIte

Page 654 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±35
BRAKE CONTROL SYSTEM
Code
Chart
No. Item Diagnosis
Flash outChart
No. Item Diagnosis
Serial
Communications
51C0225FL Open or shorted sensorB-17
52C0221FR Open or shorted sensorB-18
53C0235Rear

Page 655 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±36BRAKE CONTROL SYSTEM
Diagnosis By ªABSº Warning Light
Illumination Pattern
In the event that there is abnormality in the ªABSº warning
light illumination pattern while the key is in the ON p

Page 656 of 2100

ISUZU AXIOM 2002  Service Repair Manual 5A±37
BRAKE CONTROL SYSTEM
Diagnostic Trouble Codes (DTCs)
When the warning light in the meter remains ON, the
EHCU stores the fault identification and disables the
ABS.
How to display and erase DTCs