STEP 1. Measure the resistance at the electric parking brake ECU connector.
(1) Disconnect the electric parking brake ECU connector and measure at the wiring harness side.
(2) Measure the resistance between the MRL+ terminal and the MRL- terminal.OK: 6 Ω or less.
(3) Measure the resistance between the MRL+ terminal and ground.OK: No continuity.
Is the check result normal?
Go to Step 3. Go to Step 2.
STEP 2. Measure the resistance at the rear brake caliper assembly (LH) connector.
(1) Disconnect the rear brake caliper assembly (LH) connector and measure at the device side.
(2) Measure the resistance between terminal No.1 and terminal No.2.OK: 6 Ω or less.
(3) Measure the resistance between terminal No.1 and ground.OK: No continuity.
Is the check result normal?
The motor circuit may be open or short to ground. Repair the wiring harness wires or connectors between the electric parking brake ECU connector and the rear brake caliper assembly (LH) connector. Replace the electric parking brake actuator assembly (LH) (Refer to ).