STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position 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 the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the check result normal?
Go to Step 2. Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
STEP 2. Using scan tool (M.U.T.-IIISE), check other system DTC.
STEP 3. Brake fluid level check.
STEP 5. Using scan tool (M.U.T.-IIISE), check data list for other system
Check the ETACS-ECU system data list. | Item No. | Item name | Normal condition | 102 | Brake fluid switch | ON |
|
Item No. | Item name | Normal condition |
102 | Brake fluid switch | ON |
Is the check result normal?
: Go to Step 10. : This diagnosis is complete.
: Go to Step 6.
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: Continuity exists (2 Ω 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 HL1+ line between ETACS-ECU connector and brake fluid level switch connector.
STEP 10. Parking brake lever stroke check.
STEP 11. Parking brake switch check.
STEP 12. Check of short to power supply, short to ground, and open circuit in BRK line between combination meter connector and parking brake switch connector.
STEP 13. Retest the system.