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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  B1036:11 or B1036:13, GO to  3  .

      For DTCs  B103A:11 or B103A:13, GO to  4  .

      For DTC B103A: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: Passenger Seat Side Air Bag C339.
    3. Disconnect: HVAC Module C228B.
    4. Disconnect: Passenger Cushion Heater Mat C334.
    5. Measure:
      Passenger Seat Cushion Heater Mat Ground
      G08038951
      G08038952
      C334 Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 CHS02 (YE/BU)
      G08038953
      		 - Ground
      Passenger Seat Cushion Heater Mat HVAC Module
      G08038954
      G08038955
      C334 C228B
      Pin Circuit Measurement / Action Pin Circuit
      1 CHS02 (YE/BU)
      G08038956
      		 17 CHS07 (GY/BU)

    Is the resistance greater than 10, 000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger 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: Passenger Seat Side Air Bag C339.
    3. Disconnect: HVAC Module C228B.
    4. Disconnect: Passenger Cushion Heater Mat C334.
    5. Measure:
      Passenger Seat Cushion Heater Mat Ground
      G08038957
      G08038958
      C334 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 VHS26 (VT)
      G08038959
      		 - Ground
      Passenger Seat Cushion Heater Mat HVAC Module
      G08038960
      G08038961
      C334 C228B
      Pin Circuit Measurement / Action Pin Circuit
      2 VHS26 (VT)
      G08038962
      		 15 VHS27 (WH/OG)

    Is the resistance greater than 10, 000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger 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:
      Passenger Seat Cushion Heater Mat Ground
      G08038963
      G08038964
      C334 Ground
      Pin Circuit Measurement / Action Pin Circuit
      3 RHS05 (YE/VT)
      G08038965
      		 - Ground
      Passenger Seat Cushion Heater Mat HVAC Module
      G08038966
      G08038967
      C334 C228A
      Pin Circuit Measurement / Action Pin Circuit
      3 RHS05 (YE/VT)
      G08038968
      		 23 RH111 (GY/BU)

    Is the resistance greater than 10, 000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger 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: Passenger Seat Side Air Bag C339.
    3. Disconnect: HVAC Module C228A and C228B.
    4. Disconnect: Passenger Cushion Heater Mat C334.
    5. Ignition ON.
    6. Measure:
      Driver Seat Cushion Heater Mat Ground
      G08038969
      G08038970
      C334 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 VHS26 (VT)
      G08038971
      		 - Ground
      3 RHS05 (YE/VT)
      G08038972
      		 - 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: Passenger Seat Backrest Heater Mat C335.
    2. Measure:
      Passenger Seat Backrest Heater Mat Ground
      G08038974
      G08038973
      C335 Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 GD904 (BK/BU)
      G08038975
      		 - 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 AND A SHORT TO GROUND
    1. Measure:
      Passenger Seat Cushion Heater Mat Ground
      G08038976
      G08038977
      C334 Component Side Ground
      Pin Circuit Measurement / Action Pin Circuit
      1 -
      G08038978
      		 - Ground
      Passenger Seat Cushion Heater Mat Passenger Seat Cushion Heater Mat
      G08038979
      G08038980
      C334 Component Side C334 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      1 -
      G08038981
      		 4 -

    Is the resistance greater than 10, 000 ohms between the passenger seat cushion heater mat and ground; and between 1.2 and 2.2 ohms between the passenger 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:
      Passenger Seat Backrest Heater Mat Ground
      G08038982
      G08038983
      C335 Component Side Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08038984
      		 - Ground
      Passenger Seat Backrest Heater Mat Passenger Seat Backrest Heater Mat
      G08038985
      G08038986
      C335 Component Side C335 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      1 -
      G08038987
      		 2 -

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

    1. Yes: GO to 10  .
    2. No: INSTALL a new backrest heater mat. REFER to Seat Backrest Heater Mat . GO to  13  .
  10. CHECK FOR A SHORT TO GROUND OR OPEN CIRCUIT BETWEEN THE BACKREST AND CUSHION HEATER MAT
    1. Measure:
      Passenger Seat Cushion Heater Mat Ground
      G08038988
      G08038989
      C334 Ground
      Pin Circuit Measurement / Action Pin Circuit
      4 CHS01 (GY/VT)
      G08038990
      		 - Ground
      Passenger Seat Cushion Heater Mat Passenger Seat Backrest Heater Mat
      G08038991
      G08038992
      C334 C335
      Pin Circuit Measurement / Action Pin Circuit
      4 CHS01 (GY/VT)
      G08038993
      		 1 CHS01 (GY/VT)

    Is the resistance greater than 10, 000 ohms between the passenger seat cushion heater mat and ground; and less than 3 ohms between the passenger seat cushion heater mat and the 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:
      Passenger Seat Cushion Heater Mat Ground
      G08038995
      G08038994
      C334 Component Side Ground
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08038996
      		 - Ground
      Passenger Seat Cushion Heater Mat Passenger Seat Cushion Heater Mat
      G08038997
      G08038998
      C334 Component Side C334 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08038999
      		 3 -

    Is the resistance between 725 ohms and 170, 000 ohms between passenger seat cushion heater mat pins; and greater than 10, 000 ohms between passenger 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: Passenger Seat Cushion Heater Mat C334 (if previously disconnected).
    6. Connect: Passenger Seat Backrest Heater Mat C335 (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: Passenger Seat Side Air Bag C339.
    3. Connect: Passenger Seat Cushion Heater Mat C334 (if previously disconnected).
    4. Connect: Passenger Seat Backrest Heater Mat C335 (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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