INSPECTION PROCEDURE 1: Communication between M.U.T.-III and the ABS-ECU is not possible.

<LH drive vehicles>

<RH drive vehicles>

TECHNICAL DESCRIPTION (COMMENT)

If the M.U.T.-III can not communicate with the ABS system, the CAN bus lines may be defective. If the ABS system does not work, the ABS-ECU or its power supply circuit may be defective.

PROBABLE CAUSES

Damaged wiring harness or connector
Malfunction of the hydraulic unit (Integrated with ABS-ECU)

DIAGNOSIS

STEP 1. M.U.T.-III CAN bus diagnostics

caution

Before connecting or disconnecting the M.U.T.-III, turn the ignition switch to the "LOCK" (OFF) position.

Use M.U.T.-III to diagnose the CAN bus lines.
(1)Connect M.U.T.-III to the 16-pin diagnosis connector.
(2)Turn the ignition switch to the "ON" position.
(3)Diagnose the CAN bus line.

Q. Is the check result normal?

Check and repair the power supply circuit system (Refer to

Repair the CAN bus lines (Refer to GROUP 54F, CAN bus line Diagnostic flow