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DTC B1761: VIN not programmed
 
 
cautionWhenever the ECU is replaced, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
 
 
 
TROUBLE JUDGMENT
If the VIN data is not written when the ETACS-ECU is replaced, the ETACS-ECU stores DTC No.B1761.
 
 
 
TROUBLESHOOTING HINTS
  • VIN not written
  • The ETACS-ECU may be defective
 
 
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III) ."
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the CAN bus line found to be normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).
 
STEP 2. Write the VIN.
(1) Write the VIN data to the ETACS-ECU.
(2) Erase the DTC.
(3) Turn the ignition switch from the LOCK (OFF) position to the ON position.
(4) Check if the DTC is stored.
Is DTC No.B1761 set?
Replace the ETACS-ECU.
The procedure is complete.