Fuel Economy Meter

Present fuel economy meter is MAX level when the vehicle speed is more than 0 mph (0 Km/h)

1. Check that navigation unit connector D (5P) is connected to the navigation unit.
2. Start the vehicle and push "OK" on the disclaimer screen.
3. Do the Start-up procedure in the Picture Diagnosis Test, then select Trip Diag.

Is the FUP Count 5-6 at cold idle and 2-3 at warm idle?

YES - Replace the navigation unit.

NO - Go to step 4.

4. Turn the ignition switch OFF.
5. Disconnect PCM connector A (32P) and navigation unit connector D (5P).
6. Turn the ignition switch ON (II).




7. Measure the voltage between navigation unit connector D (5P) terminal No.1 and body ground.

Is there voltage?

YES - Repair short to power in the wire between the navigation unit and the PCM.

NO - Go to step 8.

8. Turn the ignition switch OFF.




9. Check for continuity between navigation unit connector D (5P) terminal No.1 and body ground.

Is there continuity?

YES - Repair short to body ground in the wire between the navigation unit and PCM.

NO - Go to step 10.




10. Check for continuity between navigation unit connector D (5P) terminal No.1 and PCM connector A (32P) terminal No.11.

Is there continuity?

YES - Go to step 11.

NO - Repair open in the wire between the navigation unit and the PCM.

11. Substitute a known-good navigation unit and recheck.

Is the system OK?

YES - Replace the navigation unit.

NO - Replace the PCM.