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 3. Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines.
STEP 3. 12V Starter Battery check.
STEP 4. Voltage measurement at the ASC-ECU connector.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the voltage between the +BV terminal and the body ground.OK: The voltage should measure approximately 12 volts (battery positive voltage).
Is the check result normal?
Go to Step 6. Go to Step 5.
STEP 5. Check of short to power supply, short to ground, and open circuit in +BV line between fusible link and ASC-ECU connector.
Is the check result normal?
Go to Step 6. : Repair the fusible link, connector(s) or wiring harness.
STEP 6. Resistance measurement at ASC-ECU connector.
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Resistance between the GND1 terminal and the body ground, and between the GND2 terminal and the body ground.OK: The resistance should be 2 ohms or less
Is the check result normal?
Go to Step 8. Go to Step 7.
STEP 7. Check of open circuit in GND1, GND2 line between ASC-ECU connector and body ground.
Is the check result normal?
Go to Step 8. : Repair the connector(s) or wiring harness.
STEP 8. Check whether the DTC is set again.
STEP 9. Check the other DTC.
(1) Erase the DTC.
(2) Drive the vehicle at 12 mph (20 km/h) or higher.note | The ABS warning light does not turn OFF in some cases unless the vehicle runs at 12 mph (20 km/h) or higher. |
Is any DTC set?
Carry out the applicable troubleshooting for the DTC (Refer to ). : Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).