Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Driving Test
- DRIVING TEST 1
- Scroll the map screen to display the area to make correction. Press "ENTER" and select "CURRENT LOCATION CORRECTION".
- Correct direction of the vehicle mark.
- Perform the distance correction of the Confirmation/Adjustment Mode mode.NOTE: Normally, adjustment is not necessary because this system has automatic distance correction function. However, when a tire chain is fitted, adjustment in accordance with the tire diameter ratio must be made.
- Are symptoms applicable to the "EXAMPLE OF SYMPTOMS JUDGED NO MALFUNCTION " present after driving the vehicle?
YES or NO
YES >> Limit of the location detection capacity of the navigation system
NO >> GO TO 2.
- DRIVING TEST 2
- Did any malfunction occur when the proper test in the following test patterns is performed?
- Test pattern
Driving test finds the difference between the symptoms monitored with and without each sensor.
- Test pattern 1: Test method with no GPS location correction
Disconnect the GPS antenna connector (GT5) connected to the AV and NAVI control unit. Accurately adjust the current position and the direction, then drive the vehicle.
- Test pattern 2: Test method with no map-matching Accurately adjust the current position and the direction. Eject the map DVD-ROM from the AV and NAVI control unit with the ignition switch turned to OFF, then drive the vehicle. After driving, insert the map DVD-ROM back in the unit, display the track of the vehicle on the map screen and compare it with the actual road configuration.
- Test pattern 1: Test method with no GPS location correction
- Sample tests
- < To determine if the current-location mark skips at the same position, if so, whether it is caused by map-matching or by GPS >
Perform test pattern 1.
- < To determine if the pattern of streets displayed is correct or not >
Perform test pattern 1&2.
Compare the track of the vehicle on the map screen and the actual road configuration. For fairly accurate tracking, plotting shall be made every several hundred meters.
- < When the distance is adjusted accurately >
Perform test pattern 1&2.
Drive on a road of which distance is accurately known (by utilizing distance posts on a highway). Calculate the rate of change (increased/decreased) of the distance by comparing with the actual distance.
Correction = A/B
A: Distance shown on the screen
B: Actual distance
YES or NO
YES >>
- If adjustment is insufficient, perform adjustment again.
- If any error is found in the map, please let us know.
- Replace AV and NAVI control unit.
NO >> Limit of the location detection capacity of the navigation system
- < To determine if the current-location mark skips at the same position, if so, whether it is caused by map-matching or by GPS >
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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