When servicing Active Handling™ vehicles, test drives
will be necessary to allow all tests to be run, and all system functions to
be enabled and exercised. A test drive may also be required to duplicate specific
DTCs covered in this section. The ABS diagnostic system check (including test
drive) should be run when vehicle repairs are complete, to verify the fix.
The diagnostic test drive will vary for ABS/TCS or Active Handling™
problems.
| • | The following is a suggested Active Handling™ diagnostic
test drive. |
| 1. | Read the diagnostic aids, and the Condition For Setting The DTC. |
| 2. | Reconnect all previously disconnected components. |
| 3. | Turn the Ignition switch OFF, then START the engine. |
| 4. | Carefully drive vehicle in a straight line, above 24 km/h
(15 mph), for one minute while monitoring the Steering Wheel Centered
information on the scan tool. When the steering angle has been centered the
scan tool will display Yes. |
| • | Drive the vehicle under the following conditions for at least
10 minutes and at no times should any unlawful or unsafe maneuvers
be performed: |
| 3. | Perform turning maneuvers (curved freeway entrance ramp, parking
lot maneuvers) and high steering angles and yaw rates at low speeds. |
| 4. | If drivers comments include any specific driving conditions, then
they should be duplicated if at all possible. |
| 5. | With the engine still running use the scan tool and read DTCs. |
| 6. | If any DTCs are set refer to the appropriate DTC table. |
