Code No.B1762: Ignition OFF Current Draw (IOD) Fuse Disconnected
Code No.B1765: ECU Power Supply Fuse Disconnected

COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Check of the fuse
Check the fuse.

Q. Is the check result normal?
Go to Step 2.
Perform the inspection for a blown fuse (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - Inspection Service Points for a Blown Fuse ). Repair the fuse, and then go to Step 5 .

STEP 2. Connector check: C-218 ETACS-ECU connector, C-219 ETACS-ECU connector


Q. Is the check result normal?

Go to Step 3.

Repair the defective connector. Go to Step 5.

STEP 3. Check the wiring harness between C-218 ETACS-ECU connector terminal No.20 and the fusible link (20).




note Prior to the wiring harness inspection, check junction block connector C-213, and repair if necessary.

  • Check the power supply line for open circuit.

Q. Is the check result normal?

Go to Step 4.

Repair the wiring harness. Go to Step 5.

STEP 4. Check the wiring harness between C-219 ETACS-ECU connector terminal No.74 and the ignition switch (ACC).





note Prior to the wiring harness inspection, check joint connector C-127, junction block connectors C-207 and C-208, and repair if necessary.

  • Check the power supply line for open circuit.

Q. Is the check result normal?

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ). Go to Step 5.

Repair the wiring harness. Go to Step 5.

STEP 5. Check whether the diagnosis code is reset.
Check if diagnosis code No.B1762 is set to the ETACS-ECU.

Q. Is the diagnosis code set?
Replace the ETACS-ECU.
The procedure is complete.