STEP 1. Scan tool (M.U.T.-IIISE) CAN bus diagnostics.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE)
."
(2) Turn on the power supply mode of the electric motor switch.
(3) Diagnose the CAN bus line.
(4) Turn off the power supply mode of the electric motor switch.
Is the check result normal?
Go to Step 2. Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
STEP 2. Scan tool (M.U.T.-IIISE) DTC for other systems.
STEP 3. Brake fluid level check.
STEP 5. Scan tool (M.U.T.-IIISE) data list for other system.
STEP 6. Brake fluid level switch check.
STEP 7. Resistance measurement at brake fluid level switch connector.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the resistance between the brake fluid level switch connector (ground terminal) and the body ground.OK: The resistance should be 2 ohms or less
Is the check result normal?
Go to Step 9. Go to Step 8.
STEP 8. Check of open circuit in ground line between brake fluid level switch connector and the body ground.
STEP 9. Check of short to power supply, short to ground, and open circuit in BFSW line between ETACS-ECU connector and brake fluid level switch connector.
STEP 10. Retest the system.