B1743 – Blown hazard warning lamp fuse MMC Colt

---

---

---

COMMENTS ON TROUBLE SYMPTOM

---

PROBABLE CAUSES

Malfunction of the ETACS-ECU

Damaged harness wires and connectors

---

DIAGNOSIS PROCEDURE

STEP 1. Check the hazard warning lamp fuse.

Q. Is the check result normal?

STEP 2. Connector check: B-234 ETACS-ECU connector

Q. Is the check result normal?

STEP 3. Voltage measurement at the B-234 ETACS-ECU connector.

Q. Is the check result normal?

STEP 4. Check the wiring harness between B-234 ETACS-ECU connector terminal No.5 and the fusible link (1).

Check the power supply line for open circuit.

Q. Is the check result normal?

STEP 5. Check whether the diagnosis code is reset.

Q. Is the diagnosis code set?