Symptom Troubleshooting Index - Honda Accord 2008 Manual
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07/11/02 09:00:00 61TA0000_110_0013
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no
DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.
Symptom
Engine will not start
(MIL works OK, no DTCs set)
Engine will not start
(MIL comes on and stays on,
no DTCs set)
MIL comes on and stays on,
or never comes on at all, no
DTCs set
Engine will not start
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes)
Engine starts but stalls
immediately
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes)
Engine is hard to start
(MIL works OK, no DTCs set)
Cold fast idle too low
(MIL works OK, no DTCs set)
Cold fast idle too high
(MIL works OK, no DTCs set)
Idle speed fluctuates
(MIL works OK, no DTCs set)
ＴＡ０８ＡＥ４Ａ２０３００００００００ＨＢＡＴ０１
Diagnostic procedure
1.
Test the battery (see page 22-88).
2.
Test the starter (see page 4-10).
3.
Check the fuel pressure (see page 11-361).
4.
Troubleshoot the fuel pump circuit (see page 11-352).
Troubleshoot the DLC circuit (see page 11-208).
Troubleshoot the MIL circuit (see page 11-207).
Check the immobilizer system (see page 22-405).
Check the immobilizer system (see page 22-405).
1.
Test the battery (see page 22-88).
2.
Check the fuel pressure (see page 11-361).
3.
Clean the throttle body (see page 11-385).
1.
Do the ECM/PCM idle learn procedure (see page
11-343).
2.
Check the idle speed (see page 11-342).
3.
Clean the throttle body (see page 11-385).
1.
Do the ECM/PCM idle learn procedure (see page
11-343).
2.
Check the idle speed (see page 11-342).
3.
Do the throttle position learning check (see page
11-384).
1.
Do the ECM/PCM idle learn procedure (see page
11-343).
2.
Check the idle speed (see page 11-342).
3.
Do the carbon accumulation check (see page 11-384).
4.
Troubleshoot the A/C signal circuit (see page 11-336).
Also check for
•
Low compression
•
No ignition spark
•
Intake air leaks
•
Locked up engine
•
Broken cam chain
•
Fuel contamination
•
No power to ECM/
PCM
•
No ground to ECM/
PCM
•
Shorted reference
voltage
•
Low compression
•
Intake air leaks
•
Fuel contamination
•
Weak spark
Intake air leaks
Incorrect valve
timing or clearance
adjustment
(cont'd)
11-13
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