Chart B-16 Rear Dump Solenoid Coil Failure (Dtc 46 (Flash Out) / C0252, C0254 (Serial Communications)); Chart B-17 Fl Speed Sensor Open Or Shorted (Dtc 51 (Flash Out) / C0225 (Serial Communications)) - Isuzu 1999 RODEO Workshop Manual

BRAKE CONTROL SYSTEM
5A–46
Chart B-16 Rear Dump Solenoid Coil Failure (DTC 46 (Flash out) / C0252, C0254 (Serial
communications))
Step
1 Was the "EHCU Connector Pin–out Checks" performed?
2 1. Turn the key switch to off.
2. Disconnect the 2–way EHCU connector (C–5) from the
EHCU.
3. Inspect the connector for damage or corrosion.
Is the connector free from damage or corrosion?
3 1. Replace the Coil Integrated Module.
2. Reconnect all component, ensure all components are properly
mounted.
Was this step finished?
Chart B-17 FL Speed Sensor Open or Shorted (DTC 51 (Flash out) / C0225 (Serial
communications))
Step
1 1. Turn the key off.
2. Disconnect coil integrated module connector.
3. Measure the resistance between coil integrated module
connector (C-4) terminals 2 and 10.
Is the resistance between 2.0k and 2.8k ohms?
2 Measure the FL speed sensor resistance at the sensor connector.
Is the resistance between 2.0k and 2.8k ohms?
3 1. Reconnect all components, ensure all components are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?
Action
Action
Yes
Go to "EHCU
Connector
Go to Step 2 Pin–out Checks."
Repair the
connector.
Repeat the "Basic
Diagnostic Flow
Go to Step 3
Repeat the "Basic
diagnostic flow
chart" Go to Step 3
Yes
Check for faults
in harness
between speed
sensor and coil
integrated
module.
Fault found:
Repair, and
perform system
self-check.
No fault found:
Replace coil
integrated
module.
Go to Step 3
Go to Step 2
Repair harness
abnormality
between sensors
and coil
integrated
module. Replace sensor.
Go to Step 3 Go to Step 3
Repeat the "Basic
diagnostic flow
chart" Go to Step 3
No
Chart."
No