

TROUBLE JUDGMENT
COMMENT ON TROUBLE SYMPTOM
PROBABLE CAUSES
DIAGNOSIS PROCEDURE
STEP 1. Connector check: B-238 column switch connector


Q.
Is the check result normal?

STEP 2. Voltage measurement at B-238 column switch connector.



Q.
Is the check result normal?


STEP 3. Check the wiring harness between B-238 column switch connector terminal No.1 and the fusible link (1).









Q.
Is the check result normal?

STEP 4. Voltage measurement at B-238 column switch connector.



Q.
Is the check result normal?


STEP 5. Check the wiring harness between B-238 column switch connector terminal No.9 and the ignition switch (IG1).






Q.
Is the check result normal?

STEP 6. Resistance measurement at the B-238 column switch connector.



Q.
Is the check result normal?


STEP 7. Check the wiring harness between B-238 column switch connector terminal No.4 and the body earth.


Q.
Is the check result normal?

STEP 8. Connector check: B-233 ETACS-ECU connector


Q.
Is the check result normal?

STEP 9. Check the wiring harness from B-233 ETACS-ECU connector terminal Nos. 54 and 64 to B-238 column switch connector terminal Nos. 3 and 8.




Q.
Is the check result normal?

STEP 10. Check whether the diagnosis code is reset.
Q.
Is the diagnosis code set?
