Honda Accord 2008 Manual page 1510

07/11/02 09:35:40 61TA0000_190_0089
DTC 41-21: Right-front Wheel Lock
DTC 42-21: Left-front Wheel Lock
DTC 43-21: Right-rear Wheel Lock
DTC 44-21: Left-rear Wheel Lock
The DTCs may be indicated under these conditions:
• The vehicle goes into a spin.
• The ABS or VSA continues to operate for a long time.
• Snow, dirt, or debris build-up on the wheel speed
sensor or magnetic encoder.
• Misadjusted brake switch.
• Contaminated brake fluid.
1. Raise the vehicle, and support it with safety stands
in the proper locations (see page 1-9).
2. Turn the appropriate wheel by hand.
DTC
41-21
42-21
43-21
44-21
Is there brake drag?
YES − Repair the brake drag.
−
NO Go to step 3.
3. Check that the appropriate wheel speed sensor is
properly mounted (see page 19-144).
Is the wheel speed sensor installation OK ?
−
YES Go to step 4.
NO − Reinstall the wheel speed sensor, and check
the mounting position (see page 19-144).
4. Turn the ignition switch to ON (II).
5. Clear the DTC with the HDS.
6. Test-drive the vehicle. Drive the vehicle at 7 mph
(10 km/h) for 20 seconds or more.
NOTE: Drive the vehicle on a straight section of
road, not on a lift.
Appropriate Wheel
Right-front
Left-front
Right-rear
Left-rear
7. Check for DTCs with the HDS.
Is DT C 41-21, 42-21, 43-21, and/ or 44-21
indicated?
YES − Go to step 8.
NO − If any other DTCs are indicated, go to the
indicated DTCs troubleshooting. If DTCs are not
indicated, intermittent failure, the system is OK at
this time.
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. Test-drive the vehicle. Drive the vehicle at 7 mph
(10 km/h) for 20 seconds or more.
NOTE: Drive the vehicle on a straight section of
road, not on a lift.
10. Check for DTCs with the HDS.
Is DT C 41-21, 42-21, 43-21, and/ or 44-21
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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19-89