

OPERATION
FUNCTION
TROUBLE JUDGMENT
PROBABLE CAUSES
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III actuator test
Q.
Is the check result normal?


STEP 2. Connector check: A-123 No. 3 injector connector

Q.
Is the check result normal?

STEP 3. Check No. 3 injector itself.


Q.
Is the check result normal?

STEP 4. Perform voltage measurement at A-123 No. 3 injector connector.

Q.
Is the check result normal?


STEP 5. Connector check: B-206 engine control relay connector


Q.
Is the check result normal?
STEP 6. Connector check: B-206 engine control relay connector

Q.
Is the check result normal?

STEP 7. Check harness between B-206 (terminal No. 4) engine control relay connector and A-123 (terminal No. 1) No. 3 injector connector.


Q.
Is the check result normal?

STEP 8. Connector check: A-08 engine-ECU connector

Q.
Is the check result normal?

STEP 9. Check harness between A-123 (terminal No. 2) No. 3 injector connector and A-08 (terminal No. 23) engine-ECU connector.


Q.
Is the check result normal?

STEP 10. Perform signal wave pattern measurement at A-08 engine-ECU connector (Using on oscilloscope).


Q.
Is the check result normal?

