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Home >> Acura >> 2004 >> MDX Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Warning Systems >> Tire Pressure Monitoring System >> DTC Troubleshooting >> DTC 51, 53, 55, 57: Initialization Status of TPMS Control Unit is Non-completion
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DTC 51, 53, 55, 57: Initialization Status of TPMS Control Unit is Non-completion

  1. Check the indicated location to make sure the wheel is a TPMS type with the tire pressure sensor properly mounted in it.
    DTC REFERENCE

    DTC Tire location
    51 Right-front
    53 Left-front
    55 Right-rear
    57 Left-rear

    Is a TPMS type wheel with a tire pressure sensor mounted on the vehicle? 

    1. YES  - Go to step  4.
    2. NO  - Go to step 2.
  2. Install a known-good TPMS wheel.
  3. To memorize the sensor ID, drive the vehicle above 15 mph (24 km/h) for 40 continuous seconds, or memorize the ID with the HDS (see MEMORIZING THE TIRE PRESSURE SENSOR ID  ).
  4. Turn the ignition switch ON (II).
  5. With the HDS, check the indicated tire for the pressure sensor status showing normal. If "not defined" is shown on the HDS, turn the ignition switch OFF, rotate the tire 1/4 turn, then turn the ignition switch ON (II) and try again. Repeat this step two more times if necessary.
    DTC REFERENCE

    DTC Tire location
    51 Right-front
    53 Left-front
    55 Right-rear
    57 Left-rear

    Is there a response (within one full turn of the tire)? 

    1. YES  - The system is OK at this time. Clear the DTC (see HOW TO CLEAR TPMS DTCS  ).
    2. NO  - Go to step 6.
  6. Install a wheel with a known-good tire pressure sensor on the vehicle. Memorize the sensor ID with the HDS and check that wheel location again for a pressure sensor signal (repeat the procedure in step  5).

    Is there a response this time? 

    1. YES  - Replace the tire pressure sensor on the customer's wheel (see TIRE PRESSURE SENSOR REPLACEMENT  ).
    2. NO  - Go to step 7.
  7. Turn the ignition switch OFF, then disconnect TPMS control unit connectors A (12P) and B (22P) and the appropriate initiator connector (3P).
    DTC REFERENCE

    DTC Tire location
    51 Right-front
    53 Left-front
    55 Right-rear
    57 Left-rear
  8. Turn the ignition switch ON (II).
  9. Check for continuity between the appropriate terminal in TPMS control unit connector B (22P) and the corresponding terminal in the initiator connector (3P) (see table).
    TPMS CONTROL UNIT CONNECTOR TERMINALS REFERENCE

    DTC TPMS control unit terminal No. Initiator name/terminal No.
    51 13 RIGHT-FRONT/1
    53 12 LEFT-FRONT/1
    55 15 RIGHT-REAR/1
    57 14 LEFT-REAR/1
    Fig 1: Checking Continuity Between Terminal In TPMS Control Unit Connector B (22P) And (3P)
    G03641292Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step 10.
    2. NO  - Repair the open in the appropriate wire between the TPMS control unit and the initiator.
  10. Check for continuity between the appropriate terminal in TPMS control unit connector A (12P) and the corresponding terminal in the initiator connector (3P) (see table).
    TPMS CONTROL UNIT CONNECTOR TERMINALS REFERENCE

    DTC TPMS control unit terminal No. Initiator name/terminal No.
    51 9 RIGHT-FRONT/3
    53 8 LEFT-FRONT/3
    55 11 RIGHT-REAR/3
    57 10 LEFT-REAR/3
    Fig 2: Checking Continuity Between Terminal In TPMS Control Unit Connector A (12P) And (3P)
    G03641293Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step 11.
    2. NO  - Repair the open in the appropriate wire between the TPMS control unit and the initiator.
  11. Check for continuity between the appropriate terminal in TPMS control unit connector B (22P) and the terminals in the initiator connector (3P) (see table).
    TPMS CONTROL UNIT CONNECTOR TERMINALS REFERENCE

    DTC TPMS control unit terminal No. Initiator name/terminal No.
    51 3 RIGHT-FRONT/2
    53 4 LEFT-FRONT/2
    55 2 RIGHT-REAR/2
    57 5 LEFT-REAR/2
    Fig 3: Checking Continuity Between Terminal In TPMS Control Unit Connector B (22P) And (3P)
    G03641294Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Go to step 12.
    2. NO  - Repair the open in the appropriate wire between the TPMS control unit and the initiator.
  12. Check for continuity between the appropriate terminal in TPMS control unit connector B (22P) and body ground (see table).
    TPMS CONTROL UNIT CONNECTOR TERMINALS REFERENCE

    DTC TPMS control unit terminal No.
    51 3
    53 4
    55 2
    57 5
    Fig 4: Checking Continuity Between Appropriate Terminal In TPMS Control Unit Connector B (22P) And Body Ground
    G03641295Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    1. YES  - Repair the short to body ground in the appropriate wire between the TPMS control unit and the initiator.
    2. NO  - Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit and recheck.
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