Repair Procedure 1 - Combination Meter Computer

Replace Combination Meter Computer.

1. Verify that the Parts Department has received the NEW combination meter computer with the vehicle's correct mileage.

2. Verify that the vehicle is on a level surface.

3. Remove the Combination Meter per "overhaul" instructions in the Technical Information System (TIS), 2004 model year Prius Repair Manual, Vehicle Interior - Meter/Gauge/Display - "Combination Meter Assy: Overhaul".

CAUTION:

^ Before performing each step of the disassembly/reassembly procedure below, eliminate static electricity by touching the vehicle body to prevent the components from being damaged.





^ Upon removing the combination meter computer from the static free packaging, be sure to hold it by the edges as shown in the illustration.





4. Remove the combination meter cover RH.

Remove the screw, and then remove the combination meter cover RH.





5. Remove the combination meter cover No. 3.

A. Remove the 4 screws.

B. Widen the 2 claws along the outside to disengage them.

C. Raise the cover from the bottom and remove the combination meter reflector No. 1.





6. Remove meter circuit plate No. 3. Pull the connector locks in the direction indicated by the arrows in the illustration, and remove the meter circuit plate No. 3.





7. Remove meter circuit plate No.4. Pull the connector locks in the direction indicated by the arrows in the illustration, and remove the meter circuit plate No. 4.





8. Remove the Combination Meter Computer.

Disconnect the connector and remove the Combination Meter Computer.

HINT:

There is NO locking mechanism on this connector.





9. Install the Combination Meter Computer.

A. Install the NEW Combination Meter Computer.

B. Connect the connector.

10. Install meter circuit plate No. 4.





A. Pull the connector locks in the direction indicated by the arrows in the illustration, and install the meter circuit plate No. 4.

B. Lock the connector lock.





11. Install meter circuit plate No.3.

A. Pull the connector locks in the direction indicated by the arrows in the illustration, and install the meter circuit plate No. 3.

B. Lock the connector locks.





12. Install combination meter cover No. 3.

Install the combination meter reflector No. 1 with the 4 screws.





13. Install combination meter cover RH with the screw.

14. Install combination meter in reverse of disassembly.

15. Reset the inclination sensor.

HINT:

After replacement of the Combination Meter Computer, reset the standard horizontal angle of the inclination sensor.





A. Keep the vehicle stationary in both longitudinally and laterally horizontal position (within +/- 0.3°).

HINT:
Place the vehicle on a level surface such as an alignment rack, if available.

B. Switch to the "Trip A" mode of the odometer display.

C. Turn the power switch OFF.

D. Make sure your foot is OFF of the brake pedal.

E. Push in and hold the "ODO/TRIP" button.

F. Turn the power switch ON (push the "POWER" button twice).

G. Turn the "ODO/TRIP" button OFF, and then ON 3 times within 5 seconds.

H. Continue to hold the "ODO/TRIP" button until the "ODO" indicator in the display turns OFF and a 6-digit code (######) is displayed.

I. Release the "ODO/TRIP" button.





J. Push and hold the "ODO/TRIP" button for 5 seconds or more again.

The 6-digit code (######) will then change to a 5-digit code (#####).

K. After "1" is displayed at the 3rd digit of the 5-digit code, release the ODO/TRIP" button.

Approximately 5 seconds after "1" is displayed at the 3rd digit, the "TRIP A" indicators are displayed, and the odometer returns to the normal operation.





NOTE:

^ The "TRIP A" mileage will revert to 0.0 miles in this procedure.

^ Do NOT drive the vehicle before the reset procedure has been completed.

HINT:

If a write error occurs, start the procedure again from the beginning.