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Component Tests and General Diagnostics








METER: METER / GAUGE SYSTEM: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. CHECK SPEEDOMETER
(a) Check the operation.
(1) Using a speedometer tester, inspect the speedometer for indication error and check the operation of the odometer.

Reference (km/h)





Reference (mph)





NOTE: Tire wear and over or under tire pressure will affect indication error.
(2) Check the deflection width of the speedometer indicator.
Reference:
Below 0.5 km/h (0.3 mph)
2. CHECK OUTPUT SIGNAL OF VEHICLE SPEED





(a) Check the output signal waveform.
(1) Remove the combination meter.
(2) Connect an oscilloscope to terminals C10-13 and the body ground.
(3) Start the engine.




(4) Check the signal waveform according to the condition(s) in the table below.






OK:
As shown in the illustration
HINT: As vehicle speed increases, the cycle of the signal waveform narrows.





3. CHECK FUEL RECEIVER GAUGE
HINT: Before disconnecting the connector, check the number of segments of the fuel indicator on the meter.

(a) Disconnect the F14 sender gauge connector.
(b) Turn the power switch ON (IG), then check the position of the receiver gauge segment.
OK:






(c) Connect terminals 5 and 6 on the wire harness side connector of the fuel sender gauge.
(d) Turn the power switch to the ON (IG), then check the position of the receiver gauge segment.
OK:






4. CHECK FUEL LEVEL WARNING
(a) Disconnect the connector from the sender gauge.
(b) Turn the power switch ON (IG), check that the fuel level needle indicates EMPTY and fuel level warning light comes on.
OK:
Fuel level warning light comes on.
5. CHECK LOW OIL PRESSURE WARNING LIGHT
(a) Disconnect the connector from the low oil pressure switch.
(b) Turn the power switch ON (IG).
(c) Ground the terminal of the wire harness side connector, then check the low oil pressure warning light.
OK:
Low oil pressure warning light comes on.
6. CHECK BRAKE WARNING LIGHT
(a) Inspect the parking brake warning light.
(1) Disconnect the connector from the parking brake switch.
(2) Turn the power switch ON (IG).
(3) Ground the terminal of the wire harness side connector, then check the parking brake warning light.
OK:
Brake warning light comes on.
(b) Inspect the brake fluid level warning light.
(1) Disconnect the connector from the brake fluid level warning switch.
(2) Turn the power switch ON (IG).
(3) Connect a terminal to the other terminal of the wire harness side connector, then check the brake fluid level warning switch.
OK:
Brake warning light comes on.
7. CHECK BRAKE FLUID LEVEL WARNING SWITCH
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the connector.
(c) Measure the resistance between the terminals.
Standard resistance:
Float up (switch off): 10 kOhms or higher
(d) Use a syphon, etc. to take fluid out of the reservoir tank.
(e) Measure the resistance between the terminals.
Standard resistance:
Float up (switch off): 10 kOhms or higher
(f) Pour the fluid back in the reservoir tank.
(g) Reconnect the connector.
8. MAINTENANCE LIQUID RESETTING PROCEDURE (U. S. A. models)

Indicator condition





(a) Press the ODO / TRIP switch until odometer displays "ODO".
(b) Turn the power switch OFF.
(c) Press and hold the reset switch, and turn the power switch ON (IG).
(d) After turning the power switch ON (IG), keep holding the reset switch for at least 5 seconds. The reset procedure is completed.
HINT:
- If the power switch is turned OFF during reset procedure, reset mode is canceled.
- If the reset switch is turned off during the reset procedure, reset mode is canceled and the display shows the condition prior to the reset procedure.

9. CENTERED VALUE SETTING (INCLINATION SENSOR)
Perform the following procedures to correct inclination of the meter and inclination sensors when installing / removing / replacing the meter or after replacing the inclination sensors or main base.
(a) Setting procedure
(1) Connect the connector and install the meter securely in the position shown in the illustration so that it is inclined at a 20 degree angle to the vehicle's vertical line A.




(2) Park the vehicle on a level surface.
(3) Turn the power switch ON (IG).
(4) Set the odometer display into the "TRIP A" mode.
(5) Turn the power switch OFF.
(6) Press and hold the ODO/TRIP switch while pressing the power switch twice ON (IG). (Do not put your foot on the brake.)
(7) Press the ODO/TRIP button (switch) 3 times within 5 seconds and hold it at least 5 seconds until the Inclination Sensor Information is displayed on the odometer.
(8) Release the ODO/TRIP switch.
(9) Press and hold the ODO/TRIP switch for at least 5 seconds to update the centered value. The third digit will indicate the status. The value of "1" indicates a successful reset.
HINT:
- If "0", "2", or "3" is displayed, perform the procedure "Turn the power switch ON (IG)" again.
- Once the reset is complete, the odometer will returns to normal.

(10) Release the ODO/TRIP button. (Once the reset is complete, the odometer will returns to normal.)
(11) Turn the power switch OFF.




- *2: ODO/TRIP display (Normal mode)
- *3: Inclination sensor information display (Setting mode)
- *4: Current result display

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