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Pinpoint Test

  1. CHECK FOR HVAC MODULE DTCs 
    1. Ignition ON.
    2. Using a scan tool, perform HVAC module self-test.

    Were any DTCs retrieved during the self-test? 

    1. Yes: For DTCs  B1034:11 or B1034:13, GO to  3.

      For DTCs  B1038:11 or B1038:13, GO to  4.

      For DTC B1038:12, GO to  6.

      For all other DTCs  , REFER to DTC CHART: HEATING, VENTILATION, AND AIR CONDITIONING (HVAC) MODULE - DATC .

    2. No: GO to 2  .
  2. CHECK THE TOUCHSCREEN CONTROLS OPERATION
    1. Start the engine.
    2. Select each audio and climate control function using the touchscreen controls.

    Do all touchscreen controls operate? 

    1. Yes: GO to  12  .
    2. No: If equipped with Premium Plus, REFER to INFORMATION AND ENTERTAINMENT SYSTEM -- PREMIUM PLUS .

      If equipped with Sony® Sound, REFER to PINPOINT TEST W: THE TOUCHSCREEN IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY .

  3. CHECK THE HEATER ELEMENT POWER CIRCUIT FOR AN OPEN OR SHORT TO GROUND
    1. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

      Ignition OFF.

    2. Disconnect: Driver Seat Side Air Bag C3051.
    3. Disconnect: HVAC Module C228B.
    4. Disconnect: Driver Seat Cushion Heater Mat C364.
    5. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038902
      G08038903
      C364 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CHS02 (YE/BU)
      G08038904
      		 - Ground
      Driver Seat Cushion Heater Mat HVAC Module
      G08038905
      G08038906
      C364 C228B
      Pin Circuit Measurement / Action Pin Circuit
      1 CHS02 (YE/BU)
      G08038907
      		 16 CHS02 (YE/BU)

    Is the resistance greater than 10, 000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module? 

    1. Yes: GO to  7  .
    2. No: REPAIR the circuit. GO to  13  .
  4. CHECK THE HEATED SEAT TEMPERATURE SENSOR CIRCUIT FOR AN OPEN OR SHORT TO GROUND
    1. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

      Ignition OFF.

    2. Disconnect: Driver Seat Side Air Bag C3051.
    3. Disconnect: HVAC Module C228B.
    4. Disconnect: Driver Seat Cushion Heater Mat C364.
    5. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038908
      G08038909
      C364 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 VHS26 (VT)
      G08038910
      		 - Ground
      Driver Seat Cushion Heater Mat HVAC Module
      G08038911
      G08038912
      C364 C228B
      Pin Circuit Measurement / Action Pin Circuit
      2 VHS26 (VT)
      G08038913
      		 30 VHS26 (VT)

    Is the resistance greater than 10, 000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module? 

    1. Yes: GO to 5  .
    2. No: REPAIR the circuit. GO to  13  .
  5. CHECK THE HEATED SEAT TEMPERATURE SENSOR RETURN CIRCUIT FOR AN OPEN OR SHORT TO GROUND
    1. Disconnect: HVAC Module C228A.
    2. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038914
      G08038915
      C364 Ground
      Pin Circuit Measurement / Action Pin Circuit
      3 RHS05 (YE/VT)
      G08038916
      		 - Ground
      Driver Seat Cushion Heater Mat HVAC Module
      G08038917
      G08038918
      C364 C228A
      Pin Circuit Measurement / Action Pin Circuit
      3 RHS05 (YE/VT)
      G08038919
      		 23 RH111 (GY/BU)

    Is the resistance greater than 10, 000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and the HVAC module? 

    1. Yes: GO to  11  .
    2. No: REPAIR the circuit. GO to  13  .
  6. CHECK THE HEATED SEAT CIRCUITS FOR A SHORT TO VOLTAGE
    1. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

      Ignition OFF.

    2. Disconnect: Driver Seat Side Air Bag C3051.
    3. Disconnect: HVAC Module C228A and C228B.
    4. Disconnect: Driver Seat Cushion Heater Mat C364.
    5. Ignition ON.
    6. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038920
      G08038921
      C364 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 VHS26 (VT)
      G08038922
      		 - Ground
      3 RHS05 (YE/VT)
      G08038923
      		 - Ground

    Is any voltage present on any circuits? 

    1. Yes: REPAIR the affected circuit. GO to  13  .
    2. No: GO to  12  .
  7. CHECK THE HEATER ELEMENT GROUND CIRCUIT FOR AN OPEN
    1. Disconnect: Driver Seat Backrest Heater Mat C365.
    2. Measure:
      Driver Seat Backrest Heater Mat Ground
      G08038925
      G08038924
      C365 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 GD904 (BK/BU)
      G08038926
      		 - Ground

    Is the resistance less than 3 ohms? 

    1. Yes: GO to 8  .
    2. No: REPAIR the circuit. GO to  13  .
  8. CHECK CUSHION HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
    1. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038927
      G08038928
      C364 Component Side Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 -
      G08038929
      		 - Ground
      Driver Seat Cushion Heater Mat Driver Seat Cushion Heater Mat
      G08038930
      G08038931
      C364 Component Side C364 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      1 -
      G08038932
      		 4 -

    Is the resistance greater than 10, 000 ohms between the driver seat cushion heater mat and ground; and between 1.2 and 2.2 ohms between the driver seat cushion heater mat pins? 

    1. Yes: GO to 9  .
    2. No: INSTALL a new seat cushion heater mat. REFER to Seat Cushion Heater Mat . GO to  13  .
  9. CHECK THE BACKREST HEATED SEAT MAT FOR AN OPEN OR SHORT TO GROUND
    1. Measure:
      Driver Seat Backrest Heater Mat Ground
      G08038933
      G08038934
      C365 Component Side Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08038935
      		 - Ground
      Driver Seat Backrest Heater Mat Driver Seat Backrest Heater Mat
      G08038936
      G08038937
      C365 Component Side C365 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      1 -
      G08038938
      		 2 -

    Is the resistance greater than 10, 000 ohms between the driver seat backrest heater mat and ground; and between 1.2 and 2.2 ohms between the driver seat backrest heater mat pins? 

    1. Yes: GO to 10  .
    2. No: INSTALL a new seat backrest heater mat. REFER to Seat Backrest Heater Mat . GO to  13  .
  10. CHECK FOR SHORT TO GROUND OR OPEN CIRCUIT BETWEEN THE BACKREST AND CUSHION HEATER MAT
    1. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038939
      G08038940
      C364 Ground
      Pin Circuit Measurement / Action Pin Circuit
      4 CHS01 (GY/VT)
      G08038941
      		 - Ground
    2. Measure:
      Driver Seat Cushion Heater Mat Driver Seat Backrest Heater Mat
      G08038942
      G08038943
      C364 C365
      Pin Circuit Measurement / Action Pin Circuit
      4 CHS01 (GY/VT)
      G08038944
      		 1 CHS01 (GY/VT)

    Is the resistance greater than 10, 000 ohms between the driver seat cushion heater mat and ground; and less than 3 ohms between the driver seat cushion heater mat and backrest heater mat? 

    1. Yes: GO to  12  .
    2. No: REPAIR the circuit. GO to  13  .
  11. CHECK THE HEATED SEAT TEMPERATURE SENSOR FOR AN OPEN OR SHORT TO GROUND
    1. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038946
      G08038945
      C364 Component Side Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08038947
      		 - Ground
      Driver Seat Cushion Heater Mat Driver Seat Cushion Heater Mat
      G08038948
      G08038949
      C364 Component Side C364 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08038950
      		 3 -

    Is the resistance between 725 ohms and 170, 000 ohms between driver seat cushion heater mat pins; and greater than 10, 000 ohms between driver seat cushion heater mat and ground? 

    1. Yes: GO to 12  .
    2. No: INSTALL a new seat cushion heater mat. REFER to Seat Cushion Heater Mat . GO to  13  .
  12. CHECK FOR CORRECT HVAC MODULE OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect all HVAC module connectors.
    3. Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins as necessary
      • pushed-out pins - install new pins as necessary
    4. Reconnect the HVAC module connectors. Make sure they seat and latch correctly.
    5. Connect: Driver Seat Cushion Heater Mat C364 (if previously disconnected).
    6. Connect: Driver Seat Backrest Heater Mat C365 (if previously disconnected).
    7. Operate the system and determine if the concern is still present.

    Is the concern still present? 

    1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs  address this concern, INSTALL a new HVAC module. REFER to HEATING VENTILATION AIR CONDITIONING (HVAC) MODULE . GO to 13  .
    2. No: The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
  13. CHECK FOR SRS DTCs 
    1. WARNING: Turn the ignition OFF and wait one minute to deplete the backup power supply. Failure to follow this instruction may result in serious personal injury or death in the event of an accidental deployment.

      Ignition OFF.

    2. Connect: Driver Seat Side Air Bag C3051.
    3. Connect: Driver Seat Cushion Heater Mat C364 (if previously disconnected).
    4. Connect: Driver Seat Backrest Heater Mat C365 (if previously disconnected).
    5. Ignition ON.
    6. Using a scan tool, clear the RCM DTCs  .
    7. Cycle the ignition OFF then ON.
    8. Using a scan tool, perform RCM self-test.

    Are any RCM DTCs retrieved during self-test? 

    1. Yes: REFER to DTC CHART: RESTRAINT CONTROL MODULE (RCM) for pinpoint test direction.
    2. No: The repair is complete. RETURN the vehicle to the customer.
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