On-Vehicle inspection
METER: METER / GAUGE SYSTEM: ON-VEHICLE INSPECTION
ON-VEHICLE INSPECTION
1. INSPECT SPEEDOMETER
(a) Check the operation.
(1) Using a speedometer tester, inspect the speedometer and confirm that the speedometer readings are within the acceptable range. Also check the odometer operation.
Reference:
km/h (Canada, Mexico)
mph (U.S.A.)
NOTE: Tire wear and excessively high or low tire pressure affect speedometer indications.
(2) Check the deflection of the speedometer indicator.
Reference:
Below 0.3 mph (0.5 km/h)
2. INSPECT SPEED SENSOR
(a) Check the output signal waveform.
(1) Remove the combination meter assembly, but do not disconnect the connector.
(2) Connect an oscilloscope to terminal E13-4 and to the body ground.
(3) Start the engine.
(4) Check the signal waveform according to the conditions in the table below.
OK:
As shown in the illustration.
NOTE: As the vehicle speed increases, the cycle of the signal waveform narrows.
(5) Reinstall the combination meter assembly.
3. INSPECT TACHOMETER
(a) Check the operation.
(1) Connect the tune-up test tachometer and start the engine.
NOTICE:
- 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 strike it.
(2) Compare the result of the test with the standard indication.
DC 13.5 V, at 25°C (77°F)
Reference:
4. INSPECT FUEL RECEIVER GAUGE
(a) Disconnect the L5 fuel sender gauge connector.
(b) Check the fuel receiver gauge operation when the ignition switch is turned to the ON position.
OK:
Needle position is on EMPTY.
(c) Connect terminals 2 and 3 on the wire harness side connector of the fuel sender gauge.
(d) Check the fuel receiver gauge operation when the ignition switch is turned from OFF to ON.
OK:
Needle position is on FULL.
(e) Reconnect the fuel sender gauge connector.
5. INSPECT FUEL LEVEL WARNING LIGHT
(a) Disconnect the fuel sender gauge connector.
(b) Turn the ignition switch to the ON position, then check that the fuel level needle indicates EMPTY and the fuel level warning light comes on.
OK:
Fuel level warning light comes on.
(c) Reconnect the fuel sender gauge connector.
6. INSPECT ENGINE OIL PRESSURE WARNING LIGHT
(a) Disconnect the engine oil pressure switch connector.
(b) Turn the ignition switch to the ON position.
(c) Ground the terminal of the wire harness side connector, then check the engine oil pressure warning light.
OK:
Engine oil pressure warning light illuminates.
(d) Reconnect the engine oil pressure switch connector.
7. INSPECT BRAKE WARNING LIGHT
(a) Inspect the parking brake warning light.
(1) Disconnect the parking brake switch connector.
(2) Turn the ignition switch to the ON position.
(3) Ground the terminal of the wire harness side connector, then check the parking brake warning light.
OK:
Brake warning light illuminates.
(4) Reconnect the parking brake switch connector.
(b) Inspect the brake fluid level warning light.
(1) Disconnect the brake fluid level warning switch connector.
(2) Turn the ignition switch to the ON position.
(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 illuminates.
(4) Reconnect the brake fluid level warning switch connector.
8. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the brake fluid level warning switch connector.
(c) Measure the resistance between the terminals.
Standard resistance:
Float inside reservoir tank is in high position (switch OFF): 10 k Ohms or higher
(d) Use a siphon or a similar tool to drain fluid out of the reservoir tank.
(e) Measure the resistance between the terminals.
Standard resistance:
Float inside reservoir tank is in low position (switch ON): Below 1 Ohms
(f) Pour the fluid back into the reservoir tank.
(g) Reconnect the brake fluid level warning switch connector.
(h) Reinstall the reservoir tank cap and strainer.
9. OIL MAINTENANCE INDICATOR RESETTING PROCEDURE (U.S.A. only)
(a) Set the window display located inside the combination meter to the ODO indication.
(b) Turn the ignition switch OFF.
(c) While pressing the ODO/TRIP display change switch (reset switch) (for at least 5 seconds), turn the ignition switch ON.
(d) When the reset procedure has been completed successfully, the MAINT REQD indicator light turns off and the ODO/TRIP meter indicates 0 (zero) and then returns to its regular display.
HINT: If the reset fails, the MAINT REQD indicator light remains illuminated. Perform the procedure again.