Inspection of Electronic Control Components

1. INSPECT VOLTAGE OF ECT ECU CONNECTOR



a. Remove the cowl side trim of passenger side.
b. Turn on the ignition switch.

Terminals Of ECM/Pinouts Part 1:

Pinouts Part 2:

c. Measure the voltage at each terminal.


2. INSPECT SOLENOID
a. Disconnect the connector from the ECT ECU.



b. Measure the resistance between S(1), S(2), S(L) and ground.

STD: 11 - 15 Ohm

c. Apply battery voltage to the solenoid. Check that an operation noise can be heard from the solenoid.

3. CHECK SOLENOID SEALS
If there is foreign material in the solenoid valve, there will be no fluid control even with solenoid operation.




a. Check No.1 and No.2 solenoid valves.
- Applying 5 kg/sq.cm (71 psi, 490 kPa) of compressed air, check that the solenoid valves open.
- When supply battery voltage to the solenoids, check that the solenoid valves do not leak the air.




b. Check the lock-up solenoid valve.
- Check that the solenoid valve does not leak when low-pressure compressed air is applied.
- When supply battery voltage to the solenoid, check that the solenoid valve opens.

If a malfunction is found during voltage inspection (step 1.), inspect the components listed below.

4. INSPECT NEUTRAL START SWITCH






Inspect that there is continuity between terminals L - C, 2 - C, and N - C.

5. INSPECT THROTTLE POSITION SENSOR






Using an ohmmeter, check the resistance between each terminal.

6. INSPECT NO.2 SPEED SENSOR



a. Jack up the rear wheel on one side.
b. Connect an ohmmeter between the connector and ground.
c. Spin the wheel and check that the meter needle deflects from 0 Ohms to infinite Ohms.

7. INSPECT NO.1 SPEED SENSOR IN COMBINATION METER (Analog Type)



a. Remove the combination meter.
b. Connect an ohmmeter between terminals SPD (+) and SPD (-).
c. Revolve the meter shaft and check that the meter needle repeatedly deflects from 0 Ohms to infinite Ohms.

8. INSPECT PATTERN SELECT SWITCH






Inspect that there is continuity between 2 and each terminal.

NOTE: As there are diodes inside, be careful of the tester probe polarity.

9. INSPECT O/D SWITCH






Inspect that there is continuity between terminals 1 and 3.