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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
25
GROUP OF #5 AND #6 CYLINDERS
26
GROUP OF #1, #3 AND #5 CYLINDERS.
27
GROUP OF #2, #4 AND #6 CYLINDERS.
28
CYLINDER AT RANDOM
Check
Are there any faults in #5 and
#6 cylinders?
Are there any fault in #1, #3
and #5 cylinders?
Are there any fault in #2, #4
and #6 cylinders?
Is the engine idle rough?
EN(H6DO)(diag)-185
ENGINE (DIAGNOSTICS)
Yes
Repair or replace
Inspect DTC
faulty parts.
P0171, P0172,
P0174 or P0175
NOTE:
using "List of Diag-
• Check the fol-
nostic Trouble
lowing items.
Code (DTC)".
• Spark plug
<Ref. to
• Fuel injector
EN(H6DO)(diag)-
• Ignition coil
66, List of Diag-
• Compres-
nostic Trouble
sion ratio
Code (DTC).>
• If no abnormal is
found, check for
"IGNITION CON-
TROL SYSTEM"
of #5 and #6 cylin-
ders side. <Ref. to
EN(H6DO)(diag)-
60, IGNITION
CONTROL SYS-
TEM, Diagnostics
for Engine Start-
ing Failure.>
Repair or replace
Inspect DTC
faulty parts.
P0171, P0172,
P0174 or P0175
NOTE:
using "List of Diag-
Check the follow-
nostic Trouble
ing items.
Code (DTC)".
• Spark plug
<Ref. to
• Fuel injector
EN(H6DO)(diag)-
• Skipping timing
66, List of Diag-
chain teeth
nostic Trouble
Code (DTC).>
Repair or replace
Inspect DTC
faulty parts.
P0171, P0172,
P0174 or P0175
NOTE:
using "List of Diag-
Check the follow-
nostic Trouble
ing items.
Code (DTC)".
• Spark plug
<Ref. to
• Fuel injector
EN(H6DO)(diag)-
• Compression
66, List of Diag-
ratio
nostic Trouble
• Skipping timing
Code (DTC).>
chain teeth
Inspect DTC
Repair or replace
P0171, P0172,
faulty parts.
P0174 or P0175
NOTE:
using "List of Diag-
Check the follow-
nostic Trouble
ing items.
Code (DTC)".
• Spark plug
<Ref. to
• Fuel injector
EN(H6DO)(diag)-
• Compression
66, List of Diag-
ratio
nostic Trouble
Code (DTC).>
No
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