Honda Accord 2008 Manual page 1520

07/11/02 09:35:42 61TA0000_190_0099
DTC 62-21: VSA Modulator-control Unit IG
High Voltage
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Turn the ignition switch to LOCK (0), then start the
engine.
4. Check for DTCs with the HDS.
Is DT C 62-21 indicated?
−
YES Go to step 5.
NO − Intermittent failure, the system is OK at this
time.
5. Check and note BATTERY voltage in the VSA DATA
LIST with the HDS.
6. Using a voltmeter, measure and note the voltage
between the battery terminals.
NOTE: If the voltage is beyond 15.1 V, troubleshoot
the alternator regulator circuit (see page 4-28)
7. Compare the voltage noted in step 5 to the voltage
in step 6.
Is the dif f erence between the two voltage
readings less than 3 V ?
YES − Intermittent failure, the system is OK at this
time. Check for loose terminals at the VSA
modulator-control unit 36P connector. Refer to
intermittent failures troubleshooting (see page
19-47). If the code resets after clearing, go to
step 8.
NO − Go to step 8.
8. Update the VSA modulator-control unit if it does
not have the latest software (see page 19-140). If
the unit already has the latest software, substitute a
known-good VSA modulator-control unit (see page
19-141).
9. Turn the ignition switch to LOCK (0), then start the
engine.
10. Check for DTCs with the HDS.
Is DT C 62-21 indicated?
YES − Check for loose terminals in the VSA
modulator-control unit 36P connector. If the VSA
modulator-control unit was updated, substitute a
known-good VSA modulator-control unit (see page
19-141), then retest. If the VSA modulator-control
unit was substituted, go to step 1.
−
NO If the VSA modulator-control unit was
updated, troubleshooting is complete. If the VSA
modulator-control unit was substituted, replace the
original VSA modulator-control unit (see page
19-141). If any other DTCs are indicated, go to the
indicated DTCs troubleshooting.
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19-99