[Previous][Next]
DTC C1913: Acceleration sensor tire1
DTC C1923: Acceleration sensor tire2
DTC C1933: Acceleration sensor tire3
DTC C1943: Acceleration sensor tire4
DTC C1914: Tire air pressure sensor tire1
DTC C1924: Tire air pressure sensor tire2
DTC C1934: Tire air pressure sensor tire3
DTC C1944: Tire air pressure sensor tire4
 
 
cautionIf there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table .).
 
 
DTC SET CONDITION
DTCs C1913, C1923, C1933, C1943
  • The TPMS transmitter detects if the wheel is rotated by the acceleration sensor and sends the signals to ETACS-ECU <Vehicles without Keyless Operation System> or KOS-ECU <Vehicles with Keyless Operation System>. When the TPMS transmitter judges that the acceleration sensor is failed, the failure signal is send to ETACS-ECU <Vehicles without Keyless Operation System> or KOS-ECU <Vehicles with Keyless Operation System>, and ETACS-ECU <Vehicles without Keyless Operation System> or KOS-ECU <Vehicles with Keyless Operation System> stores this code.
DTCs C1914, C1924, C1934, C1944
  • The TPMS transmitter detects if the tire pressure sensor is normal and sends the signal to ETACS-ECU <Vehicles without Keyless Operation System> or KOS-ECU <Vehicles with Keyless Operation System>. When the TPMS transmitter judges that the tire pressure sensor is failed, the failure signal is send to ETACS-ECU <Vehicles without Keyless Operation System> or KOS-ECU <Vehicles with Keyless Operation System>, and ETACS-ECU <Vehicles without Keyless Operation System> or KOS-ECU <Vehicles with Keyless Operation System> stores this code.
 
 
TROUBLESHOOTING HINTS
The most likely causes for this DTC to be stored are:
  • Damaged wiring harness and connector
  • Malfunction of TPMS transmitter
  • Malfunction of ETACS-ECU <Vehicles without Keyless Operation System>
  • Malfunction of KOS-ECU <Vehicles with Keyless Operation System>
 
 
DIAGNOSIS
STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.
Use scan tool to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table .). On completion, go to Step 2.
 
STEP 2. DTC recheck after resetting CAN bus lines
Recheck if DTC C1913, C1914, C1923, C1924, C1933, C1934, C1943 or C1944 is stored.
(1) Turn the ignition switch (engine starting switch) from the "LOCK" (OFF) to "ON" position.
(2) Check if the DTC is stored.
(3) Turn the ignition switch (engine starting switch) to the "LOCK" (OFF) position.
Is DTC C1913, C1923, C1933, C1943, C1914, C1924, C1934 or C1944 stored?
Go to Step 3.
The procedure is complete.
 
STEP 3. Check for TPMS transmitter.
Identify the TPMS transmitter which the DTC is stored by TPMS transmitter check (Refer to .).
noteThe 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.
Are there any TPMS transmitters which are identified?
Among the checked TPMS transmitters, replace the TPMS transmitters in which the DTC is stored. Then register the ID codes (Refer to .). Then go to Step 4.
Even when no transmitter is checked, register the ID codes (Refer to .). Then go to Step 4.
 
STEP 4. Check whether the DTCs are stored again.
Recheck if the DTCs are stored.
(1) Turn the ignition switch (engine starting switch) from the "LOCK" (OFF) to "ON" position.
(2) Check if the DTC is stored.
(3) Turn the ignition switch (engine starting switch) to the "LOCK" (OFF) position.
Is DTC C1913, C1923, C1933, C1943, C1914, C1924, C1934 or C1944 stored?
Replace the ETACS-ECU <Vehicles without Keyless Operation System> (Refer to .) or KOS-ECU <Vehicles with Keyless Operation System> (Refer to GROUP 42B, KOS-ECU .), and register the ID codes (Refer to .). Then start over at Step 1.
The procedure is complete.