Chart B-2 Cpu Error (Dtc 14 (Flash Out) / C0271, C0272, C0273, C0284 (Serial Communications)); Chart B-3 Low Or High Ignition Voltage (Dtc 15 (Flash Out) / C0277, 0278 (Serial Communications)); Chart B-4 Excessive Dump Time (Dtc 17 (Flash Out) / C0269 (Serial Communications)) - Isuzu 1999 RODEO Workshop Manual

Chart B-2 CPU Error (DTC 14 (Flash out) / C0271, C0272, C0273, C0284 (Serial
communications))
Step
1 1. Turn the key off.
2. Disconnected coil integrated module connector.
3. Inspect coil integrated module ground.
Is the check resistance between the coil integrated module
connector terminals, 2 (C-5) and 7 (C-4) and body ground?
2 1. Turn the key off, connect the coil integrated module connector.
2. Erase the trouble code.
3. Turn Ignition off, then on, to perform system self-check.
4. If warning light remains on, display trouble codes once again.
Is the check trouble code 14 (Flash out) / C0271, C0272, C0273,
C0284 (Serial communications)?
3 1. Reconnect all components, ensure all components are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?
Chart B-3 Low or High Ignition Voltage (DTC 15 (Flash out) / C0277, 0278 (Serial
communications))
Step
1 Is the check battery voltage normal? (Battery capacity check)
2 1. Turn the key off.
2. Disconnect coil integrated module connector.
3. Turn the key on.
Is the check voltage between coil integrated module connector
(C-4) terminals 1 and 7, higher than 10V?
3 1. Reconnect all components, ensure all components are
properly mounted.
2. Clear diagnostic trouble code.
Was this step finished?

Chart B-4 Excessive Dump Time (DTC 17 (Flash out) / C0269 (Serial communications))

Step
1 Check for anything causing extended ABS activation, such as
locked brakes or an erratic speed sensor signal.
Was a problem found?
2 1. The key turned off.
2. Replace EHCU.
3. Reconnect all components, ensure all components are
properly mounted.
Was this step finished?
Action
Action
Action
BRAKE CONTROL SYSTEM
Yes
Go to Step 2
Replace EHCU.
Go to Step 3
Repeat the "Basic
diagnostic flow
chart"
Yes
Go to Step 2
Check harness
connector for
suspected
disconnection
Fault found:
Repair, and
perform system
self-check
No fault found: Repair harness or
replace EHCU.
Go to Step 3
Repeat the "Basic
diagnostic flow
chart"
Yes
Repair or
Replace
Repeat the "Basic
diagnostic flow
chart"
5A–41
No
Repair the body
ground harness.
Go to Step 3
Inspect in
accordance with
the DTC
displayed.
Go to Step 3
No
Charge or
replace battery.
Go to Step 2
connector.
Go to Step 3
Go to Step 3
No
Go to Step 2
Go to Step 2