Component Tests and General Diagnostics
ON-VEHICLE INSPECTION1. INSPECT SPEEDOMETER
a. Check the operation.
1. Using a speedometer tester, inspect the speedometer for acceptable indication error and check the operation of the odometer.
NOTE: Do not use worn, underinflated or overinflated tires, as the speedometer reading will be inaccurate.
2. Check the deflection width of the speed meter indicator.
Reference: Below 0.5 km/h (0.3 mph)
If the result is not as specified, the speedometer may have a malfunction.
2. INSPECT OUTPUT SIGNAL OF VEHICLE SPEED SENSOR
a. Check the output signal waveform.
1. Remove the combination meter, but do not disconnect the connector.
2. Connect an oscilloscope to terminal C11-21 and body ground.
3. Start the engine.
4. Check the signal waveform according to the condition(s) in the table.
OK: As shown in the illustration.
HINT: As the vehicle speed increases, the cycle of the signal waveform narrows.
3. INSPECT TACHOMETER
a. Check operation.
1. Connect the tune-up test tachometer, and start the engine.
NOTE:
- Reversing the connection of the tachometer will damage the transistors and the insides of the diodes.
- When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.
2. Compare the result of the test with the standard indication.
4. INSPECT FUEL RECEIVER GAUGE
a. Disconnect the connector from the sender gauge.
b. Turn the ignition switch ON, then check the position of the receiver gauge needle.
OK: Needle position is on EMPTY.
c. Connect terminals 2 and 3 on the wire harness side connector of the fuel sender gauge.
d. Turn the ignition switch ON, then check the position of the receiver gauge needle.
OK: Needle position is on FULL.
5. INSPECT FUEL LEVEL WARNING
a. Disconnect the connector from the sender gauge.
b. Turn the ignition switch ON, check that the fuel level needle indicates EMPTY and fuel level warning light comes on.
OK: Fuel level warning light comes on.
6. INSPECT WATER TEMPERATURE RECEIVER GAUGE
a. Disconnect the connector from the water temperature receiver gauge.
b. Turn the ignition switch ON, and then check the water temperature receiver gauge warning light.
OK: COLD indicator light comes on.
c. Ground terminal 2 on the wire harness side, then check the water temperature receiver gauge warning light.
OK: HOT indicator light comes on / blinks.
7. INSPECT LOW OIL PRESSURE WARNING LIGHT
a. Disconnect the connector from the low oil pressure switch.
b. Turn the ignition switch ON.
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.
8. INSPECT PARKING BRAKE WARNING LIGHT
a. Inspect the parking brake warning light.
1. Disconnect the connector from the parking brake warning switch.
2. Turn the ignition switch ON.
3. Ground the terminal of the wire harness side connector, and then check that the parking brake warning light illuminates.
OK: Parking brake warning light illuminates.
b. Inspect the parking brake warning light.
1. Disconnect the connector from the brake fluid level warning switch.
2. Turn the ignition switch ON.
3. Connect terminal 1 and 2 of the wire harness side connector, and then check that the parking brake warning light illuminates.
OK: Parking brake warning light illuminates.
9. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
a. Remove the reservoir 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 siphon, etc., to take fluid out of the reservoir.
e. Measure the resistance between the terminals.
Standard resistance: Float down (switch on): Below 1 Ohm
f. Pour the fluid back in the reservoir.
g. Reconnect the connector.
10. INSPECT WASHER LEVEL WARNING SWITCH
a. Disconnect the connector from the washer level warning switch.
b. Turn the ignition switch ON.
c. Ground the terminal of the wire harness side connector, then check the washer level warning light.
OK: Washer level warning light comes on.
11. RESET OIL REPLACEMENT REMINDER LIGHT (INDICATOR)
a. Set the liquid crystal display (LCD) to ODO.
b. Turn the ignition switch OFF.
c. Press and hold the reset switch, and turn the ignition switch ON.
d. After turning the ignition switch ON, keep holding the reset switch for at least 5 seconds. The reset procedure is completed.
HINT:
- If the ignition switch is turned OFF during the reset procedure:
LCD: off
IND: off
- If the reset switch is released too quickly during the reset procedure:
LCD: returns to ODO display
IND: is not reset.
CENTER CLUSTER BOX ILLUMINATION
INSPECTION
1. INSPECT CENTER CLUSTER BOX ILLUMINATION
a. Inspect center cluster box illumination light operation.
1. Connect the battery positive (+) lead to the terminal 2 and the battery negative (-) lead to the terminal 1, and check that the illumination light comes on.