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DTC B1163: Coding data mismatch
 
 
caution
  • When DTC B1163 is set, be sure to diagnose the CAN bus line.
  • When replacing the ECU, always check that the communication circuit is normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
When the coding data registered in KOS&OSS-ECU is different from the coding data transmitted on the CAN bus, KOS&OSS-ECU sets DTC B1163. At the same time, KOS&OSS-ECU displays the power supply system error warning to the combination meter, and flashes the indicator of engine switch in orange.
 
 
DTC SET CONDITION
Judgment Criterion
  • A coding data is received which is different from the current coding status.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the CAN bus line
  • ETACS-ECU malfunction
  • ETACS-ECU has been interchanged between two vehicles
  • Malfunction of KOS&OSS-ECU
 
 
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 power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (M.U.T-III).
Connect scan tool (M.U.T-III). Refer to "How to connect scan tool (M.U.T.-III) ."
(2) Turn the power supply mode of the engine switch to ON.
(3) Diagnose the CAN bus line.
(4) Turn the power supply mode of the engine switch to OFF.
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. Using scan tool (M.U.T.-III), read the other system diagnostic trouble code.
Check again if the DTC is set in the ETACS-ECU.
(1)
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the "OFF" position before connecting or disconnecting scan tool (M.U.T.-III).
Connect scan tool (M.U.T.-III) [Refer to "How to connect scan tool (M.U.T.-III) "].
(2) Erase the DTC.
(3) Turn the power supply mode of the engine switch to "ON".
(4) Check if DTC is set.
(5) Turn the power supply mode of the engine switch to "OFF".
Is the DTC set?
Perform troubleshooting for ETACS (Refer to GROUP 54A, ETACS - Troubleshooting ).
Go to Step 3.
 
STEP 3. ETACS-ECU coding data check.
(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 scan tool (M.U.T.-III) "].
(2) Turn the power supply mode of the engine switch to "ON".
(3) Read out the option coding information in the ETACS-ECU (Refer to GROUP 00, Precautions before service, Coding Table ).
(4) Check that the "OSS" is set to "YES."
(5) Turn the power supply mode of the engine switch to "OFF".
Is the ETACS-ECU coding data normal?
Go to Step 4.
Operate scan tool (M.U.T.-III) to set the option coding "OSS" to "Yes," and check the trouble symptom.
 
STEP 4. Recheck for diagnostic trouble code.
(1) Erase the DTC.
(2) Turn the power supply mode of the engine switch from OFF to ON.
(3) Check if DTC is set.
(4) Turn the power supply mode of the engine switch from ON to OFF.
Is the DTC set?
Replace the KOS&OSS-ECU and register the VIN (Refer to ).
Intermittent malfunction is suspected (Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).