

OPERATION
FUNCTION
TROUBLE JUDGMENT
PROBABLE CAUSES
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III data list


Q.
Is the check result normal?


STEP 2. Connector check: B-108 oxygen sensor (front) connector

Q.
Is the check result normal?

STEP 3. Perform resistance measurement at B-108 oxygen sensor (front) connector.

Q.
Is the check result normal?


STEP 4. Connector check: A-09 engine-ECU connector

Q.
Is the check result normal?

STEP 5. Check harness between B-108 (terminal No. 2) oxygen sensor (front) connector and A-09 (terminal No. 98) engine-ECU connector.


Q.
Is the check result normal?

STEP 6. M.U.T.-III data list


Q.
Is the check result normal?


STEP 7. Perform voltage measurement at B-108 oxygen sensor (front) connector.

Q.
Is the check result normal?


STEP 8. Check oxygen sensor (front) itself.


Q.
Is the check result normal?

STEP 9. Connector check: A-09 engine-ECU connector


Q.
Is the check result normal?
STEP 10. Perform voltage measurement at A-09 engine-ECU connector.

Q.
Is the check result normal?


STEP 11. Connector check: A-09 engine-ECU connector


Q.
Is the check result normal?
STEP 12. Connector check: A-09 engine-ECU connector

Q.
Is the check result normal?
