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Inspection Procedure 1: A wireless LAN device cannot communicate with the vehicle (EV remote-ECU) only (The device can communicate with another device).
 
 
cautionBefore replacing the ECU, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
When a wireless LAN device cannot communicate with the vehicle (EV remote-ECU) only (however, it can communicate with another wireless LAN device), the wireless LAN device has not been registered, the power supply circuit to the EV remote-ECU, the EV remote-ECU or the wireless LAN device itself is defective.
noteUse the inquiry blank to confirm the environment where the wireless LAN device is used. Then attempt to communicate with the EV remote-ECU. If you find any faults, follow this procedure.
 
 
TROUBLESHOOTING HINTS
  • Wireless LAN device not registered
  • The power supply of EV remote-ECU be defective
  • The EV remote-ECU be defective
  • The wireless LAN device be defective
 
 
DIAGNOSIS
STEP 1. Check that the scan tool (M.U.T.-IIISE) communicates with this system.
(1)
cautionTo 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) Press the electric motor switch to turn on the power supply mode.
(3) Check whether the wireless LAN device can communicate with the EV remote-ECU.
Is the communication between scan tool (M.U.T.-IIISE) and EV remote-ECU possible?
Go to Step 2.
Repair the power supply circuit to EV remote-ECU (Refer to ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check the DTC.
Check if DTC is set in the EV remote-ECU.
Is the DTC set?
Troubleshoot the EV remote-ECU (Refer to ).
This diagnosis is complete.