STEP 1. Check the power supply fuses (No.22).
STEP 2. Check of short to power supply, short to ground, and open circuit in IODI line between fusible link and ETACS-ECU connector.
STEP 3. Using scan tool (M.U.T.-IIISE), read the other DTC.
(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 Scan tool (M.U.T.-IIISE)
."
(2) Turn the ignition switch to the "ON" position.
(3) Check whether the KOS&OSS-ECU related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC set?
Diagnose the KOS&OSS-ECU. Refer to GROUP 42B, Troubleshooting . Go to Step 4.
STEP 4. Check of short to power supply, short to ground, and open circuit in ACC line between ignition switch (ACC) <Vehicles without KOS> or KOS&OSS-ECU (ACC) <Vehicles with KOS> and ETACS-ECU connector.
STEP 5. Using scan tool (M.U.T.-IIISE), read the DTC again.
Check again if the DTC is set in the ETACS-ECU.(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3) Check if DTC is set.
Is the DTC set?
Replace the ETACS-ECU. If the trouble symptom is resolved, an intermittent malfunction such as poorly engaged connector(s) or wiring harness is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).