Combination Meter

INSPECTION




1. INSPECT COMBINATION METER WIRING CIRCUIT
Disconnect the connector "A", connector "B", connector "C" and connector "D" from the combination meter and inspect the connectors on the wire harness side.




Park/Neutral Position Switch:




Turn Signal Switch and Hazard Warning Switch:




Headlight:




GAUGE Fuse:




IGN Fuse:




Fuel Sender Gauge:




Ground (Signal):




Ground (Engine):




Ground (Power):




Generator "L" Terminal:




Engine Oil Level Warning Switch:




DOME fuse:




Rheostat Light control:
* 2 Shift lever position is "N" or "P" position.
If circuit is not as specified, refer to wiring diagram and inspect the circuit connected to other parts.




2. INSPECT SPEEDOMETER ON-VEHICLE
Using a speedometer tester, inspect the speedometer for allowable indication error and check the operation of the odometer.

HINT: Tire wear and tire over or under inflation will increase the indication error.

If error is excessive, replace the speedometer.




3. INSPECT VEHICLE SPEED SENSOR OPERATION
a. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2.
b. Connect the positive (+) lead from the tester to terminal 3 and the negative (-) lead to terminal 2.
c. Rotate the shaft.
d. Check that there is voltage change from approx. 0 V to 11 V or more between terminals 2 and 3.

HINT: The voltage change should be performed 4 times for every revolution of the speed sensor shaft.

If operation is not as specified, replace the sensor.







4. INSPECT VEHICLE SPEED SENSOR CIRCUIT
Disconnect the connector from sensor and inspect the connector on wire harness side, as shown.
If circuit is not as specified, inspect power source or wire harness.

5. INSPECT TACHOMETER ON-VEHICLE
a. Connect a tune-up test tachometer, and start the engine.

NOTE:
- Reversing the connection of the tachometer will damage the transistors and diodes inside.
- When removing or installing the tachometer, be careful not to drop or subject it to heavy shocks.




b. Compare the tester and tachometer readings.




6. INSPECT FUEL RECEIVER GAUGE OPERATION
a. Disconnect the connector from the sender gauge.
b. Turn the ignition switch ON, check that the receiver gauge needle indicates EMPTY.




c. Connect terminals 2 and 3 on the wire harness side connector through a 3.4-W test bulb.
d. Turn the ignition switch ON, check that the bulb lights up and the receiver gauge needle moves toward "E" side.

HINT: Because of the silicon oil in the gauge, it will take a short time for needle to stabilize.

If operation is not as specified, inspect the receiver gauge resistance.







7. INSPECT FUEL RECEIVER GAUGE RESISTANCE
Measure the resistance between terminals.
If resistance value is not as specified, replace the receiver gauge.







8. INSPECT FUEL SENDER GAUGE RESISTANCE
Measure the resistance between terminals 2 and 3 for each float position.
If resistance value is not as specified, replace the sender gauge.




9. INSPECT FUEL LEVEL WARNING LIGHT
a. Disconnect the connector from the sender gauge.
b. Connect terminals 1 and 3 on the wire harness side connector.
c. Turn the ignition switch ON, check that the warning light lights up.
If the warning light does not light up, test the bulb or inspect wire harness.




10. INSPECT FUEL LEVEL WARNING SWITCH
a. Apply battery positive voltage between terminals 1 and 3 through a 3.4-W test bulb, check that the bulb lights up.

HINT: It takes a short time for the bulb to light up.




b. Submerge the switch in fuel, check that the bulb goes out. If operation is not as specified, replace the sender gauge.




11. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE OPERATION
a. Disconnect the connector from the sender gauge.
b. Turn the ignition switch ON and check that the receiver gauge needle indicates COOL.




c. Ground terminal on the wire harness side connector through a 3.4-W test bulb.
d. Turn the ignition switch ON, and check that the bulb lights up and the receiver gauge needle moves to the hot side.
If operation is as specified, replace the sender gauge. Then recheck the system.
If operation is not as specified, measure the receiver gauge resistance.







12. INSPECT ENGINE COOLANT TEMPERATURE RECEIVER GAUGE RESISTANCE
Measure the resistance between terminals.

HINT: Connect the test leads so that the current from the ohmmeter can flow according to the above order.
This circuit includes the diode.
If resistance value is not as specified, replace the receiver gauge.







13. INSPECT ENGINE COOLANT TEMPERATURE SENDER GAUGE RESISTANCE
Measure the resistance between the terminal and gauge body.
If resistance value is not as specified, replace the engine coolant temperature sender gauge.




14. INSPECT LOW OIL PRESSURE WARNING LIGHT
a. Disconnect the connector from the warning switch and ground terminal on the wire harness side connector.
b. Turn the ignition switch ON and check that the warning light lights up.
If the warning light does not light up, test the bulb.




15. INSPECT LOW OIL PRESSURE SWITCH
a. Disconnect the connector from the switch.
b. Check that continuity exists between terminal and ground with the engine stopped.
c. Check that no continuity exists between terminal and ground with the engine running.

HINT: Oil pressure should be over 24.5 kPa (0.25 kgf/sq.cm, 3.55 psi).

If operation is not as specified, replace the switch.




16. INSPECT BRAKE SYSTEM WARNING LIGHT
a. Disconnect the connector from the brake fluid warning switch.
b. Release the parking brake pedal.
c. Connect the terminals on the wire harness side of the level warning switch connector.
d. Start the engine, check that the warning light lights up. If the warning light does not light up, test the bulb or wire harness.




17. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
a. Remove the reservoir tank cap and strainer.
b. Disconnect the connector.
c. Check that no continuity exists between the terminals with the switch OFF (float up).
d. Use syphon, etc. to take fluid out of the reservoir tank.
e. Check that continuity exists between the terminals with the switch ON (float down)

f. Pour the fluid back in the reservoir tank.
If operation is not as specified, replace the switch.




18. INSPECT PARKING BRAKE SWITCH
a. Check that continuity exists between the terminal and switch body with the switch ON (switch pin released).
b. Check that no continuity exists between the terminal and switch body with the switch OFF (switch pin pushed in).
If operation is not as specified, replace the switch or inspect ground point.




19. INSPECT WASHER LEVEL WARNING LIGHT
a. Disconnect the connectors from the level warning switch and parking brake switch.
b. Connect terminals on the wire harness side connector of the level warning switch connector.
c. Remove the GAUGE fuse and turn the ignition switch ON, and check that the warning light comes on.
If the warning light does not light up, test the bulb.




20. INSPECT WASHER LEVEL WARNING SWITCH
a. Check that no continuity exists between terminals with the switch OFF (float up).
b. Check that continuity exists between terminals with the switch ON (float down).
If operation is not as specified, replace the switch.







21. INSPECT WINDOW WASHER LEVEL WARNING SWITCH CIRCUIT
Disconnect the switch connector and inspect the connector on wire harness side.
If continuity is not as specified, inspect the wire harness or ground point.




22. INSPECT OPEN DOOR WARNING LIGHT
Disconnect the connector from the door courtesy switch and ground terminal 1 on the wire harness side, and check that the warning light lights up.
If the warning light does not light up, inspect the bulb or wire harness.




23. INSPECT WARNING LIGHT
a. Disconnect the connector from the light failure sensor and ground terminal 4 on the wire harness side connector.
b. Start the engine, check that the warning light lights up.
If the warning light does not light up, test the bulb or inspect wire harness.







24. INSPECT LIGHT FAILURE SENSOR CIRCUIT
Disconnect the connector from the sensor and inspect the connector on the wire harness side.
If the circuit is as specified, replace the sensor. If the circuit is not as specified, inspect the circuits connected to other parts.




25. INSPECT SEAT BELT WARNING LIGHT
a. Disconnect the connector from the buckle switch.
b. Ground terminal 1 on the buckle switch with the connectors still connected.
c. Turn the ignition switch ON and check that the warning light lights up.
If the warning light does not light up, inspect the bulb or wire harness.




26. INSPECT BUCKLE SWITCH CONTINUITY
a. Check that continuity exists between terminals 1 and 2 on the switch side connector with the switch ON (belt unfastened).
b. Check that no continuity exists between terminals 1 and 2 on the switch side connector with the switch OFF (belt fastened).
If operation is not as specified, replace the front seat inner belt.







27. INSPECT BUCKLE SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the connector on wire harness side.
If the circuit is not as specified, inspect the circuits connected to other parts.




28. INSPECT INTEGRATION RELAY SEAT BELT WARNING SYSTEM OPERATION
a. Connect the positive (+) lead from the battery to terminals 1 and 7.
b. Connect the terminal 7 to terminal 9 through the 3.4 W test bulb.
c. Connect the negative (-) lead from the battery to terminal 10.
d. Check that the bulb lights and the buzzer sounds for 4 to 8 seconds.
e. Return to step (a) and operate the chime again.




f. Connect the negative (-) lead from the battery to terminal 8.
g. Check that the buzzer stops sounding.

HINT: Check the buzzer within a period of 4 to 8 seconds.
If operation is not as specified, replace the relay.







29. Seat belt warning
INSPECT INTEGRATION RELAY CIRCUIT
Remove the relay from the junction block No.1 and inspect the connectors on the junction block side.
If the circuit is as specified, try to replace the relay with a new one.
If the circuit is not as specified, inspect the circuits connected to other parts.




30. INSPECT ENGINE OIL LEVEL WARNING SWITCH CONTINUITY
a. Check that continuity exists between terminal with the switch in each position.
b. Heat the switch to above 60 °C (140 °F) in an oil bath.




c. Check that continuity exists between terminals with the switch ON (float up).
d. Check that no continuity exists between terminals with the switch OFF (float down).
If operation is not as specified, replace the switch.







31. INSPECT ENGINE OIL LEVEL WARNING SWITCH CIRCUIT
Disconnect the switch connector and inspect the connector on wire harness side.
If continuity is not as specified, inspect the wire harness or ground point.




32. INSPECT ENGINE OIL LEVEL WARNING LIGHT
a. Disconnect the connector from the switch.
b. Turn the IG switch ON, the warning light lights up.
c. The warning light lights up after 40 sec. from the engine has started.
If the warning light does not light up, inspect bulb or wire harness.

33. INSPECT LIGHT CONTROL RHEOSTAT




34. INSPECT BULB CHECK RELAY OPERATION
a. Connect the positive (+) lead from the battery to terminal C through a 1.4-W test bulb and the negative (-) lead to terminal B, check that the test bulb does not light up.
b. Connect the positive (+) lead from the battery to terminal A and check that the test bulb lights up.
If operation is not as specified, replace the relay.