LEMON Manuals: Even more car manuals for everyone
Home >> Honda >> 2014 >> Pilot EX, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Tire Pressure Monitoring System) >> DTC Troubleshooting >> DTC 45: Initiator Circuit Short Detection

DTC 45: Initiator Circuit Short Detection

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Turn the ignition switch to LOCK (0), then turn the ignition switch to ON (II) again.
  4. Check for DTCs with the HDS.

    Is DTC 45 indicated? 

    YES  -Go to step 5.

    NO  -The system is OK at this time. ■

  5. Turn the ignition switch to LOCK (0).
  6. Disconnect the TPMS control unit connector A (14P) and B (20P).
  7. Check for continuity between the appropriate terminal in TPMS control unit connector A (14P) and body ground (see table).
    DTC CHART

    Terminal name TPMS control unit terminal
    RF LF PWR. No. 9
    LF LF PWR. No. 8
    RR LF PWR. No. 11
    LR LF PWR. No. 10
    Fig 1: Checking Continuity Between TPMS Control Unit Connector A (14P) Terminal And Body Ground
    G05965321Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 8.

    NO  -Go to step  11.

  8. Disconnect all four of the initiator 3P connectors.
  9. Check for continuity between the appropriate terminal in TPMS control unit connector A (14P) and body ground (see table).
    CONTINUITY REFERENCE

    Terminal name TPMS control unit terminal
    RF LF PWR. No. 9
    LF LF PWR. No. 8
    RR LF PWR. No. 11
    LR LF PWR. No. 10
    Fig 2: Checking Continuity Between TPMS Control Unit Connector A (14P) Terminal And Body Ground
    G05965322Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair short to body ground in the wire between the TPMS control unit and the initiators.

    NO  -Go to step 10.

  10. On each individual initiator, check for continuity between body ground and initiator 3P connector terminal No. 1.
    NOTE: Check the initiators when mounted on the vehicle.
    Fig 3: Checking Continuity Between Body Ground And Initiator 3P Connector Terminal 1
    G05965323Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Replace the appropriate initiator (see INITIATOR REPLACEMENT ). ■

    NO  -Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit (see TPMS CONTROL UNIT REPLACEMENT ), and recheck. ■

  11. Check for continuity between the appropriate terminal in TPMS control unit connector A (14P) and connector B (20P) terminals.
    CONTINUITY REFERENCE

    Tire location TPMS control unit terminal name/No.
    Connector A (14P) Connector B (20P)
    Right-front RF LF PWR./9 RF LF GND/14
    Left-front LF LF PWR./8 LF LF GND/13
    Right-rear RR LF PWR./11 RR LF GND/16
    Left-rear LR LF PWR./10 LR LF GND/15
    Fig 4: Checking Continuity Between TPMS Control Unit Connector A (14P) Terminal And Connector B (20P) Terminals
    G05965324Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 12.

    NO  -Go to step  15.

  12. Disconnect all four the initiator 3P connectors.
  13. Check for continuity between the appropriate terminal in TPMS control unit connector A (14P) and connector B (20P) terminals.
    CONTINUITY REFERENCE

    Tire location TPMS control unit terminal name/No.
    Connector A (14P) Connector B (20P)
    Right-front RF LF PWR./9 RF LF GND/14
    Left-front LF LF PWR./8 LF LF GND/13
    Right-rear RR LF PWR./11 RR LF GND/16
    Left-rear LR LF PWR./10 LR LF GND/15
    Fig 5: Checking Continuity Between TPMS Control Unit Connector A (14P) Terminal And Connector B (20P) Terminals
    G05965325Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair the short in the appropriate wire between the TPMS control unit and the initiator. ■

    NO  -Go to step 14.

  14. On each individual initiator, check for continuity between initiator 3P connector terminals No. 1 and No. 3.
    Fig 6: Checking Continuity Between Initiator 3P Connector Terminals 1 And 3
    G05965326Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Replace the appropriate initiator (see INITIATOR REPLACEMENT ). ■

    NO  -Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit (see TPMS CONTROL UNIT REPLACEMENT ), and recheck. ■

  15. Turn the ignition switch to ON (II).
  16. Measure the voltage between the appropriate terminal in TPMS control unit connector B (20P) and body ground individually.
    Fig 7: Measuring Voltage Between TPMS Control Unit Connector B (20P) Terminal And Body Ground
    G05965327Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Repair short to power in the wire between the TPMS control unit and the initiators. ■

    NO  -Check for loose terminals and poor connections at the TPMS control unit. If necessary, substitute a known-good TPMS control unit (see TPMS CONTROL UNIT REPLACEMENT ), and recheck. ■

scientia non olet · About LEMON Manuals