
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: A-157 EGR gas temperature sensor connector

Q.
Is the check result normal?

STEP 3. Check EGR gas temperature sensor itself.


Q.
Is the check result normal?

STEP 4. Perform voltage measurement at A-157 EGR gas temperature sensor connector.

Q.
Is the check result normal?


STEP 5. Connector check: C-105 engine-ECU connector

Q.
Is the check result normal?

STEP 6. Check harness between A-157 (terminal No. 2) EGR gas temperature sensor connector and C-105 (terminal No. 36) engine-ECU connector.


Q.
Is the check result normal?

STEP 7. M.U.T.-III data list


Q.
Is the check result normal?




STEP 8. Perform resistance measurement at A-157 EGR gas temperature sensor connector.

Q.
Is the check result normal?


STEP 9. Connector check: C-105 engine-ECU connector

Q.
Is the check result normal?

STEP 10. Check harness between A-157 (terminal No. 1) EGR gas temperature sensor connector and C-105 (terminal No. 30) engine-ECU connector.


Q.
Is the check result normal?

STEP 11. Connector check: C-105 engine-ECU connector

Q.
Is the check result normal?

STEP 12. Check harness between A-157 (terminal No. 2) EGR gas temperature sensor connector and C-105 (terminal No. 36) engine-ECU connector.


Q.
Is the check result normal?
