DTC B2204: Coding data mismatch
CAUTION
DTC SET CONDITION
If the vehicle information data transmitted from the ETACS-ECU via the CAN bus lines is different from that registered in the WCM, the WCM sets the DTC No. B2204.
TECHNICAL DESCRIPTION (COMMENT)
WCM determines that the abnormality is present when the vehicle information registered in it does not match the vehicle information data.
TROUBLESHOOTING HINTS
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION To prevent damage to scan tool (MB991958), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (MB991958).
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus line.
STEP 2. Using scan tool MB991958, read the ETACS-ECU diagnostic trouble code
Check if a coding-related DTC is set in the ETACS-ECU.
Q: Is the DTC set?
YES : Troubleshoot the ETACS. NO : Go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
Q: Is the DTC set?
YES : Replace WCM and register the ID codes.
NO : The trouble can be an intermittent malfunction.
DTC B2206: VIN code mismatch
DTC SET CONDITION
WCM sets DTC B2206 when chassis number registered in it and the VIN that has been transmitted on the CAN bus do not match.
TECHNICAL DESCRIPTION (COMMENT)
WCM determines that the abnormality is present when VIN registered in it and the one that has been transmitted on the CAN bus do not match.
TROUBLESHOOTING HINTS
DIAGNOSIS
Required Special Tools:
STEP 1. Check the VIN registered in the engine control module and the VIN of the vehicle.
Check if the VIN registered in the engine control module matches with the VIN of the vehicle.
CAUTION To prevent damage to scan tool (MB991958), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (MB991958).
Q: Does the VIN of the engine control module match with the VIN of the vehicle?
YES : Go to Step 2.
NO : Write the VIN to the engine control module. Record VIN and go to Step 2.
STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
Q: Is the DTC set?
YES : Replace WCM and register the ID codes. After registering the ID codes, go to Step 3.
NO : The procedure is complete.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
Q: Is the DTC set?
YES : Replace the engine control module and record the VIN.
NO : The procedure is complete.
DTC B2352: Antenna fail
DTC SET CONDITION
WCM sets the DTC B2352 when open or short circuit to the ground in the antenna is detected.
TECHNICAL DESCRIPTION (COMMENT)
When the ignition switch is turned ON, WCM transmits signal to the antenna. When the antenna is found faulty, WCM determines that the abnormality is present.
TROUBLESHOOTING HINT
Malfunction of WCM (Open circuit in antenna)
DIAGNOSIS
Required Special Tools:
Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
CAUTION To prevent damage to scan tool (MB991958), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (MB991958).
Erase the DTC.
Q: Is the DTC set?
YES : Replace WCM and register the ID codes.
NO : The procedure is complete.
DTC B2401: Keyless/KOS key ID not register
CAUTION
DTC SET CONDITION
If the keyless ID registered transmitter is not registered to the WCM, the WCM sets the DTC No.B2401.
TECHNICAL DESCRIPTION (COMMENT)
If the number of keyless ID registered transmitter is zero, the WCM determines that there is a problem.
TROUBLESHOOTING HINTS
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
CAUTION To prevent damage to scan tool (MB991958), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (MB991958).
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus line.
STEP 2. Register the transmitter and recheck the diagnostic trouble code.
Register the keyless ID, and recheck if the DTC is set.
Q: Is the DTC set?
YES : Replace WCM and register the ID codes.
NO : The procedure is complete.
DTC B2416: ECU internal error
DTC SET CONDITION
WCM sets DTC B2416 when it determines an abnormal status within itself.
TECHNICAL DESCRIPTION (COMMENT)
WCM determines that the abnormality is present, if the data abnormality is found when the ignition switch is turned ON and then EEPROM is written.
TROUBLESHOOTING HINTS
Malfunction of WCM
DIAGNOSIS
Required Special Tools:
Recheck for diagnostic trouble code.
Check again if the DTC is set to the WCM.
CAUTION To prevent damage to scan tool (MB991958), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (MB991958).
Q: Is the DTC set?
YES : Replace WCM and register the ID codes.
NO : The trouble can be an intermittent malfunction.
DTC C1608: EEPROM error
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines/
DTC SET CONDITION
WCM incorporates EEPROM (nonvolatile memory), and that EEPROM stores the TPMS, WCM and immobilizer information.
When the data in EEPROM is failed, this code is set.
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code check
Q: Is the DTC C1608 set?
YES : Replace the WCM and register the ID codes. Then go to Step 3.
NO : The procedure is complete.
STEP 3. Diagnostic trouble code check
Q: Is the DTC C1608 set?
YES : Start over at Step 1.
NO : The procedure is complete.
DTC C1900: No registration
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
DTC SET CONDITION
When the ID registration information of the TPMS transmitter is not stored in WCM, and/or when WCM is replaced with a new one, this code is set. If the ID registration mode is terminated forcibly or time-out after one or more TPMS transmitters are registered in the ID registration mode, the ID information in the WCM is erased, and this diagnostic trouble code is set.
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code check
Q: Is the DTC C1900 set?
YES : Register the ID codes. Then go to Step 3.
NO : The procedure is complete.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set.
Q: Is the DTC C1900 reset?
YES : Replace the WCM and register the ID codes. Then start over at Step 1.
NO : The procedure is complete.
DTC C1901: Vehicle speed information abnormality
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
DTC SET CONDITION
WCM receives the wheel speed information from ABS-ECU or ASC-ECU via the CAN-bus line. Although WCM receives the information that the wheel is not currently rotated from ABS-ECU or ASC-ECU, if the TPMS transmitter sends the information that the wheel is rotated, this code is set.
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Q: Is the DTC C1901 set?
YES : Go to Step 3.
NO : The procedure is complete.
STEP 3. Check for other diagnostic trouble code.
Check if the diagnostic trouble code is set from ABS-ECU or ASC-ECU <Refer to GROUP 35B,diagnostic trouble code chart (vehicles without ASC) or Refer to GROUP 35C, diagnostic trouble code chart (vehicles with ASC)>.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Carry out the troubleshooting for ABS-ECU or ASC-ECU <Refer to GROUP 35B, diagnostic trouble code chart (vehicles without ASC) or Refer to GROUP 35C, diagnostic trouble code chart (vehicles with ASC)>. Then go to Step 6.
STEP 4. Check for other diagnostic trouble code.
Check if the diagnostic trouble code is set from ETACS-ECU.
YES : Go to Step 5.
NO : Troubleshoot the set DTC.
Then go to Step 6.
STEP 5. Check the TPMS transmitter acceleration.
Check the acceleration value of each TPMS transmitter by the TPMS transmitter check function.
OK: Acceleration value: 5G or less
Q: Is the check result OK?
YES : Replace the WCM and register ID codes. Then go to Step 6.
NO : Replace the TPMS transmitter and register ID codes. Then go to Step 6.
STEP 6. Recheck for diagnostic trouble code.
Q: Is the DTC C1901 set?
YES : Start over at Step 1.
NO : The procedure is complete.
DTC C1910: Transmitter low battery voltage abnormality 1
DTC C1920: Transmitter low battery voltage abnormality 2
DTC C1930: Transmitter low battery voltage abnormality 3
DTC C1940: Transmitter low battery voltage abnormality 4
DTC C1911: Reception abnormality 1
DTC C1921: Reception abnormality 2
DTC C1931: Reception abnormality 3
DTC C1941: Reception abnormality 4
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
DTC SET CONDITION
DTC C1910, C1920, C1930, C1940
DTC C1911, C1921, C1931, C1941
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Q: Is the DTC C1910, C1920, C1930, C1940, C1911, C1921, C1931 or C1941 set?
YES : Go to Step 3.
NO : The procedure is complete.
STEP 3. Check for TPMS transmitter.
Identify the TPMS transmitter which the DTC is set by TPMS transmitter check.
NOTE: The TPMS transmitter which cannot be checked may be faulty or the ID code may not be registered, thus do not replace it, but register the ID code. If the transmitter is faulty, it is replaced in the ID code registration process.
Q: Are there any TPMS transmitters which are identified?
YES : Among the checked TPMS transmitters, replace the TPMS transmitters to which the DTC is set. Then register the ID codes. Then go to Step 4.
NO : Even when no transmitter is checked, register the ID codes. Then go to Step 4.
STEP 4. Diagnostic trouble code recheck after register the ID codes
Q: Is the DTC C1910, C1920, C1930, C1940, C1911, C1921, C1931 or C1941 set?
YES : Replace the WCM and register the ID codes. Then start over at Step 1.
NO : The procedure is complete.
DTC C1912: Tire inflation pressure warning 1
DTC C1922: Tire inflation pressure warning 2
DTC C1932: Tire inflation pressure warning 3
DTC C1942: Tire inflation pressure warning 4
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
DTC SET CONDITION
When the tire pressure included in the signal from the TPMS transmitter is less than the specified value, WCM sets this code.
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set is:
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Q: Is DTC C1912, C1922, C1932 or C1942 set?
YES : Go to Step 3.
NO : The procedure is complete.
STEP 3. Tire check
Check that there is no abnormality for the items below.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair or replace it. Then go to Step 4.
STEP 4. Diagnostic trouble code check
Q: Is DTC C1912, C1922, C1932 or C1942 set?
YES : Go to Step 5.
NO : The procedure is complete.
STEP 5. Diagnostic trouble code check
NOTE: Even within 5 minutes, if the TPMS warning light goes out, finish the driving and perform the operation (2).
Q: Is DTC C1912, C1922, C1932 or C1942 set?
YES : Go to Step 6.
NO : The procedure is complete.
STEP 6. Tire pressure check by scan tool
OK: 20 kPa (2.9 psi) or less
NOTE: Do not replace the TPMS transmitter which cannot be checked.
Q: Is the check result OK?
YES : Replace the WCM and register the ID codes. Then go to Step 9.
NO : Go to Step 7.
STEP 7. Tire pressure check by scan tool
OK: 20 kPa (2.9 psi) or less
Q: Is the check result OK?
YES : Replace the WCM and register the ID codes. Then go to Step 9.
NO : Replace the TPMS transmitter and register the ID codes. Then go to Step 8.
STEP 8. Recheck for diagnostic trouble code.
Q: Is the DTC C1912, C1922, C1932 or C1942 set?
YES : Replace the WCM and register the ID codes. Then go to Step 9.
NO : The procedure is complete.
STEP 9. Recheck for diagnostic trouble code.
Q: Is the DTC C1912, C1922, C1932 or C1942 set?
YES : Start over at Step 1.
NO : The procedure is complete.
DTC C1913: Acceleration sensor abnormality 1
DTC C1923: Acceleration sensor abnormality 2
DTC C1933: Acceleration sensor abnormality 3
DTC C1943: Acceleration sensor abnormality 4
DTC C1914: Pressure sensor abnormality 1
DTC C1924: Pressure sensor abnormality 2
DTC C1934: Pressure sensor abnormality 3
DTC C1944: Pressure sensor abnormality 4
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
DTC SET CONDITION
DTC C1913, C1923, C1933, C1943
DTC C1914, C1924, C1934, C1944
TROUBLESHOOTING HINTS
The most likely causes for this DTC to set are:
DIAGNOSIS
Required Special Tools:
STEP 1. Using scan tool MB991958, diagnose the CAN bus line.
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Q: Is the DTC C1913, C1923, C1933, C1943, C1914, C1924, C1934 or C1944 set?
YES : Go to Step 3.
NO : The procedure is complete.
STEP 3. Check for TPMS transmitter.
Identify the TPMS transmitter which the DTC is set by TPMS transmitter check.
NOTE: The TPMS transmitter which cannot be checked may be faulty or the ID code may not be registered, thus do not replace it, but register the ID code. If the transmitter is faulty, it is replaced in the ID code registration process.
Q: Are there any TPMS transmitters which are identified?
YES : Among the checked TPMS transmitters, replace the TPMS transmitters to which the DTC is set. Then register the ID codes. Then go to Step 4.
NO : Even when no transmitter is checked, register the ID codes. Then go to Step 4.
STEP 4. Diagnostic trouble code recheck after register the ID codes
Q: Is the DTC C1913, C1923, C1933, C1943, C1914, C1924, C1934 or C1944 set?
YES : Replace the WCM and register the ID codes. Then start over at Step 1.
NO : The procedure is complete.