Chart B-12 Fr Isolation Solenoid Valve Abnormality (Dtc 43); Chart B-13 Fr Dump Solenoid Valve Abnormality (Dtc 44); Chart B-14 Rear Isolation Solenoid Valve Abnormality (Dtc 45) - Isuzu Trooper 1999 Workshop Manual

5A–32
BRAKE CONTROL SYSTEM

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

Step
1 Was the "EHCU Connector Pin–out Checks" perfomed?
2 Is the EHCU connector free from damage or corrosion?
3 1. Replace the EHCU.
2. Reconnect all component, ensure all component are properly
mounted.
Was this step finished?

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

Step
1 Was the "EHCU Connector Pin–out Checks" perfomed?
2 Is the EHCU connector free from damage or corrosion?
3 1. Replace the EHCU.
2. Reconnect all component, ensure all component are properly
mounted.
Was this step finished?

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

Step
1 Was the "EHCU Connector Pin–out Checks" perfomed?
2 Is the EHCU connector free from damage or corrosion?
3 1. Replace the EHCU.
2. Reconnect all component, ensure all component are properly
mounted.
Was this step finished?
Action
Action
Action
Yes
Go to "EHCU
Connector
Pin-out Checks".
Go to Step 2
Repair the
connector.
Repeat the "Basic
Diagnostic Flow
Go to Step 3
Repeat the "Basic
Diagnostic Flow
Chart". Go to Step 3
Yes
Go to "EHCU
Connector
Pin-out Checks".
Go to Step 2
Repair the
connector.
Repeat the "Basic
Diagnostic Flow
Go to Step 3
Repeat the "Basic
Diagnostic Flow
Chart". Go to Step 3
Yes
Go to "EHCU
Connector
Pin-out Checks".
Go to Step 2
Repair the
connector.
Repeat the "Basic
Diagnostic Flow
Go to Step 3
Repeat the "Basic
Diagnostic Flow
Chart". Go to Step 3
No
Chart".
No
Chart".
No
Chart".