Suzuki XL7 2007 Service Manual page 383

Step
Compare the test results of the customer's vehicle to the
results of the same tests run, at the same engine RPM, on an
equally-equipped, same model year and type, KNOWN GOOD
vehicle. Refer to "Vehicle-to-Vehicle Diagnostic Comparison:
"Vehicle-to-Vehicle Diagnostic Comparison.
1. Install a scan tool into the known good vehicle.
2. Install the J 38792-A, if available, into the known good
vehicle; place the sensor in exactly the same location as it
was placed in the customer's vehicle.
3. Block the front wheels.
4. Apply BOTH the service brakes and the park brake.
5. Start the engine.
6. Place the transmission in NEUTRAL or PARK.
7. Slowly increase the engine RPM to the level at which the
disturbance was most noticeable in the customer's vehicle.
5
8. Record the engine RPM obtained on the scan tool and the
most dominant frequency reading if obtained on the J
38792-A, if available.
9. Place the transmission in DRIVE.
10. Slowly increase the engine RPM to the level at which the
disturbance was most noticeable in the customer's vehicle.
11. Record the engine RPM obtained on the scan tool and the
most dominant frequency reading if obtained on the J
38792-A, if available.
12. If no frequency data was obtained, or if the J 38792-A, is
not available, place the transmission into REVERSE, then
repeat steps 10 and 11. Reverse-loading of the powertrain
may increase or change the characteristics of the
vibration.
Did both of the vehicles exhibit the same characteristics?
Action
Engine Mechanical:
Yes
Go to "Vibration
Go to "Vibration
Analysis - Engine/
Diagnostic Aids: "
Accessory Isolation"
1D-43
No