Downshift Speed Test

To carry out this test, proceed as follows:

• Shift into a lower gear than the gear used when carrying out the Slow Acceleration Test.
• Drive at the engine rpm where the symptom occurs.
• The symptom is engine speed related if duplicated while carrying out this test. This eliminates the tires, wheels, brakes and the suspension components as sources.
• If necessary, repeat this test using other gears and NEUTRAL to verify the results.
• If the source of the symptom has been identified as a result of this test, proceed to the appropriate information for further diagnosis and repair. If the source has not been identified, continue with the road test.