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Pinpoint Test

NOTE: When taking measurements at DCSM harness connectors, do not insert the electrical probes into the female connector pins. Inserting the probes into connector pins can cause intermittent or open electrical connections after reassembly resulting in DTCs  and system failure. Touching the tip of these connector pins is recommended instead.
  1. CHECK THE PASSENGER BACKREST TED BLOWER SPEED CONTROL CIRCUIT 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: DCSM C3265C.
    4. Ignition ON.
    5. Measure:
      DCSM Ground
      G08039153
      G08039152
      C3265C Ground
      Pin Circuit Measurement / Action Pin Circuit
      4 VHS21 (BU/WH)
      G08039154
      		 - Ground

    Is any voltage present? 

    1. Yes: GO to 2  .
    2. No: GO to  3  .
  2. CHECK THE PASSENGER BACKREST TED BLOWER SPEED CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
    1. Disconnect: Passenger Backrest TED C3039.
    2. Measure:
      DCSM Ground
      G08039156
      G08039155
      C3265C Ground
      Pin Circuit Measurement / Action Pin Circuit
      4 VHS21 (BU/WH)
      G08039157
      		 - Ground

    Is any voltage present? 

    1. Yes: REPAIR the circuit. GO to  6  .
    2. No: GO to 3  .
  3. CHECK THE PASSENGER BACKREST TED BLOWER SPEED CONTROL AND BLOWER OUTPUT CIRCUITS FOR A SHORT TOGETHER
    1. Ignition OFF.
    2. Disconnect: Passenger Backrest TED C3039.
    3. Measure:
      DCSM DCSM
      G08039158
      G08039159
      C3265C C3265C
      Pin Circuit Measurement / Action Pin Circuit
      4 VHS21 (BU/WH)
      G08039160
      		 8 CHS08 (BN/YE)

    Is the resistance greater than 10, 000 ohms? 

    1. Yes: GO to 4  .
    2. No: REPAIR the circuits. GO to  6  .
  4. CHECK THE BACKREST TED RESISTANCE FOR AN INTERNAL SHORT
    1. Measure:
      Passenger Backrest TED Passenger Backrest TED
      G08039161
      G08039162
      C3039 Component Side C3039 Component Side
      Pin Circuit Measurement / Action Pin Circuit
      2 -
      G08039163
      		 7 -

    Is the resistance greater than 2, 000, 000 ohms? 

    1. Yes: GO to 5  .
    2. No: INSTALL a new seat backrest TED. REFER to Seat Backrest Thermo-Electric Device (TED) . GO to  6.
  5. CHECK FOR CORRECT DCSM OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect all DCSM 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 DCSM connectors. Make sure they seat and latch correctly.
    5. Connect: Passenger Backrest TED C3039 (if previously disconnected).
    6. 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 DCSM. REFER to Dual Climate Controlled Seat Module (DCSM) . GO to 6  .
    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. GO to 6  .
  6. 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: DCSM C3265C.
    4. Connect: Passenger Backrest TED C3039 (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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