Park the vehicle in an open area where radio wave is not shielded.
When replacing the ECU, always check that the communication circuit is normal.
TECHNICAL DESCRIPTION (COMMENT)
If the GPS can not be received, there is a possibility that the vehicle is in a place not suitable for communication, a defect in the GNSS/TEL antenna assembly or a defect in the TCU.
TROUBLESHOOTING HINTS
The vehicle is in a place not suitable for communication
The GNSS/TEL antenna assembly may be defective
The TCU may be defective
DIAGNOSIS
STEP 1. Confirm that the vehicle is parked properly.
Check that the vehicle is parked in an open area.
Is the check result normal?
Go to Step 2.
Move the vehicle to an open area. Then go to Step 2.
STEP 2. Using scan tool (M.U.T.-IIISE), check the data list.
Check the TCU data list (Refer to ).
(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 the Scan Tool (M.U.T.-IIISE) ."
Item No.
Check condition
Normal condition
3
Ignition switch: ON
note
Park the vehicle in an open area where radio wave is not shielded.
4 pieces or more
Is the check result normal?
The procedure is complete.
Replace the GNSS/TEL antenna assembly (Refer to ). Then go to Step 3.