DTC C1915: Transmitter OFF Mode 1; DTC C1925: Transmitter OFF Mode 2; DTC C1935: Transmitter OFF Mode 3; DTC C1945: Transmitter OFF Mode 4: Diagnosis

Required Special Tools: 

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
  • MB991824: Vehicle Communication Interface (V.C.I.)
  • MB991827: M.U.T.-III USB Cable
  • MB991910: M.U.T.-III Main Harness A

1. STEP 1. M.U.T.-III CAN bus diagnostics 

   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 (Refer to CAN BUS DIAGNOSTICS TABLE ). On completion, go to Step 2.

2. STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines 
   1. Turn the ignition switch to the "LOCK" (OFF) position.
   2. Turn the ignition switch to the "ON" position.
   3. Check if the DTC is set.
   4. Turn the ignition switch to the "LOCK" (OFF) position.

   Q: Is DTC C1915, C1925, C1935 or C1945 set? 

   YES  : Go to Step 3.

   NO  : The procedure is complete.

3. STEP 3. Diagnostic trouble code check 
   1. Drive the vehicle for five minutes.
   2. Turn the ignition switch to the "LOCK" (OFF) position.
   3. Turn the ignition switch to the "ON" position.
   4. Check if the DTC is set.
   5. Turn the ignition switch to the "LOCK" (OFF) position.

   Q: Are the all DTC C1915, C1925, C1935 and C1945 set? 

   YES  : Replace the TPMS transmitters of all the four wheels, and register ID codes (Refer to ID CODES REGISTRATION JUDGMENT TABLE  ). Then go to Step 4.

   NO  : Register the ID codes (Refer to ID CODES REGISTRATION PROCEDURE  .) Then go to Step 4.

4. STEP 4. Diagnostic trouble code recheck after register the ID codes 
   1. Turn the ignition switch to the "ON" position.
   2. Check if the DTC is set.
   3. Turn the ignition switch to the "LOCK" (OFF) position.

   Q: Is DTC C1915, C1925, C1935 or C1945 set? 

   YES  : Replace the WCM and register the ID codes (Refer to ID CODES REGISTRATION JUDGMENT TABLE  ). Then start over at Step  1.

   NO  : The procedure is complete.