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Diagnostic Aids
When the air mixes into the fuel system, the fuel
pressure (common rail pressure) may read incorrect
value. If air bleed resolves the fault, the possible cause
is the air mixing mixed into fuel system.
Step
Perform the "On-Board Diagnostic (OBD)
System Check".
1
Was the OBD System Check performed?
Review the DTC.
1.
Using Tech 2, check and store the DTC.
2.
Clear the DTC.
2
3.
Bleed the air from the fuel system.
4.
Perform test run and review the DTC.
Is DTC118 detected?
1.
The flow damper may have been
working. Leave the vehicle inactive
overnight.
3
2.
Perform test run and review the DTC.
Is DTC118 detected?
Inspect the fuel system according to the
following procedures.
1.
Check the fuel filter for excessive
contamination and choke.
2.
Check high- and low-pressure pipes for
4
collapse, choke, and loose connection.
3.
Check the feed pipe in the fuel tank for
foreign materials.
Is the fuel system sound?
Repair or replace the faulty portion(s).
5
Is the action complete?
Check injectors.
1.
Install Tech 2.
2.
Starter switch "ON", and display the
engine data.
6
3.
Start
the
"Cylinder (1-4) Compensation" display for
individual cylinders.
Is there cylinder(s) whose calibrated quantity
is larger or less than other cylinders?
Replace the faulty injector(s).
7
Is the action complete?
Action
engine
and
observe
Test Description
3. When the flow damper has been working, it will be
returned to the ordinary condition only after left inactive
overnight.
Value(s)
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—
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the
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Engine Control System 1A-179
Yes
Go to Step 2
and go to Step 2
Go to Step 3
Diagnostic Aids
Go to Step 4
Go to Step 6
Go to Step 18
Go to Step 7
Go to Step 18
No
Refer to OBD
System Check
Refer to
Refer to Test
Description
Go to Step 5
—
Go to Step 8
—
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