General Troubleshooting Information - Honda Accord 2008 Manual

07/11/02 08:45:49 61TA0000_140_0006
Automatic Transmission

General Troubleshooting Information

How to Check for DTCs with the Honda
Diagnostic System (HDS)
When the powertrain control module (PCM) senses an
abnormality in the input or output system, the D
indicator (A) in the gauge control module (B) will
usually blink.
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When the Honda Diagnostic System (HDS) is connected
to the data link connector (DLC) (A) located under the
driver's side of the dashboard, it will indicate the
diagnostic trouble code (DTC) when the ignition switch
is turned to ON (II) and the appropriate menu is selected.
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14-4
B
A
A
If the D indicator or malfunction indicator lamp (MIL)
has been reported on, or if a driveability problem is
suspected, follow this procedure:
1. Connect the HDS to the DLC. (See the HDS user's
manual for specific instructions.)
2. Turn the ignition switch to ON (II). Make sure the
HDS communicates with the PCM. If it does not, go
to the DLC circuit troubleshooting (see page
11-208).
3. Select A/T system, and observe the DTC in the
DTCs MENU on the HDS screen.
4. Record the freeze data and the on-board snapshots
for all fuel and emissions DTCs and A/T DTCs.
5. If there is a fuel and emissions DTC, first check the
fuel and emissions system as indicated by the DTC.
6. Clear the DTC and the data.
7. Drive the vehicle for several minutes under the
same conditions as those indicated by the freeze
data, and then recheck for a DTC. If the A/T DTC
returns, go to the indicated DTC's troubleshooting.
If the DTC does not return, there was an
intermittent problem within the circuit. Make sure
all pins and terminals in the circuit are tight.
Symptom Troubleshooting Versus DTC
Troubleshooting
Some symptoms will not trigger DTCs or cause the D
indicator to blink. If the MIL was reported ON or the D
indicator has been blinking, check for DTCs. If the
vehicle has an abnormal symptom, and there are no
DTCs stored, do the symptom troubleshooting. Check
the list of probable cause(s) for the symptom, in the
sequence listed, until you find the problem.
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