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Pinpoint Test

  1. CHECK POWER ON BOTH SIDES OF THE BCM POWER FUSE
    1. Ignition ON.
    2. Measure:
      BCM Ground
      G08037145
      G08037146
      Fuse 18 (10A) Ground
      Fuse side Circuit Measurement Pin Circuit
      Right -
      G08037147
      		 - -
      Left -
      G08037148
      		 - -

    Is the voltage greater than 11 volts on both sides of the fuse? 

    1. Yes: GO to 2  .
    2. No: VERIFY the fuse 18 (10A) is OK. If OK, GO to  12  . If not OK, REFER to the appropriate wiring diagrams to identify the possible causes of the circuit short. REFER to OEM FUSE AND RELAY INFORMATION and OEM WIRING DIAGRAMS .
  2. CHECK THE BCM GROUND CIRCUIT FOR AN OPEN
    1. Disconnect: BCM C2280D.
    2. Measure:
      BCM Ground
      G08037149
      G08037150
      C2280D Ground
      Pin Circuit Measurement Pin Circuit
      25 GD133 (BK)
      G08037151
      		 - -

    Is the resistance less than 3 ohms? 

    1. Yes: GO to 3  .
    2. No: REPAIR the circuit.
  3. CHECK THE HS-CAN  TERMINATION RESISTANCE
    1. Ignition OFF.
    2. Disconnect: Negative Battery Cable.
    3. Disconnect the scan tool cable from the DLC.
    4. Measure:
      DLC DLC
      G08037152
      G08037153
      C251 C251
      Pin Circuit Measurement Pin Circuit
      6 VDB04 (WH/BU)
      G08037154
      		 14 VDB05 (WH)

    Is the resistance between 54 and 66 ohms? 

    1. Yes: GO to 4  .
    2. No: GO to  6  .
  4. CHECK THE MS-CAN  TERMINATION RESISTANCE
    1. Measure:
      DLC DLC
      G08037155
      G08037156
      C251 C251
      Pin Circuit Measurement Pin Circuit
      3 VDB06 (GY/OG)
      G08037157
      		 11 VDB07 (VT/OG)

    Is the resistance between 54 and 66 ohms? 

    1. Yes: GO to  12  .
    2. No: GO to 5  .
  5. CHECK THE MS-CAN  TERMINATION RESISTANCE WITH THE HVAC MODULE DISCONNECTED
    1. Disconnect: HVAC module C228A.
    2. Measure:
      DLC DLC
      G08037158
      G08037159
      C251 C251
      Pin Circuit Measurement Pin Circuit
      3 VDB06 (GY/OG)
      G08037160
      		 11 VDB07 (VT/OG)

    Is the resistance between 108 and 132 ohms? 

    1. Yes: REFER to Diagnostic Routine J: The Heating Ventilation Air Conditioning (HVAC) Module Does Not Respond To The Scan Tool .
    2. No: GO to 6  .
  6. CHECK THE MS-CAN  CIRCUITS BETWEEN THE BCM AND THE DLC FOR AN OPEN
    1. Disconnect: BCM C2280B.
    2. Measure:
      BCM DLC
      G08037161
      G08037162
      C2280B C251
      Pin Circuit Measurement Pin Circuit
      38 VDB06 (GY/OG)
      G08037163
      		 3 VDB06 (GY/OG)
      39 VDB07 (VT/OG)
      G08037164
      		 11 VDB07 (VT/OG)

    Are the resistances less than 3 ohms? 

    1. Yes: GO to 7  .
    2. No: REPAIR the circuit in question in question.
  7. CHECK THE MS-CAN  CIRCUITS FOR A SHORT TO POWER
    1. Connect: BCM C2280B.
    2. Ignition ON.
    3. Measure:
      DLC Ground
      G08037165
      G08037166
      C2280B Ground
      Pin Circuit Measurement Pin Circuit
      3 VDB06 (GY/OG)
      G08037167
      		 - -
      11 VDB07 (VT/OG)
      G08037168
      		 - -

    Is the voltage greater than 3 volts on either circuit? 

    1. Yes: GO to 8  .
    2. No: REPAIR the circuit in question in question.
  8. CHECK THE MS-CAN  CIRCUITS FOR A SHORT TO GROUND
    1. Ignition OFF.
    2. Disconnect: Negative Battery Cable.
    3. Measure:
      DLC Ground
      G08037169
      G08037170
      C251 Ground
      Pin Circuit Measurement Pin Circuit
      3 VDB06 (GY/OG)
      G08037171
      		 - -
      11 VDB07 (VT/OG)
      G08037172
      		 - -

    Are the resistances greater than 10, 000 ohms? 

    1. Yes: GO to 9  .
    2. No: REPAIR the circuit in question in question.
  9. CHECK THE HS-CAN  CIRCUITS BETWEEN THE BCM AND THE DLC FOR AN OPEN
    1. Disconnect: BCM C2280F.
    2. Measure:
      BCM DLC
      G08037173
      G08037174
      C2280F C251
      Pin Circuit Measurement Pin Circuit
      16 VDB04 (WH/BU)
      G08037175
      		 6 VDB04 (WH/BU)
      17 VDB05 (WH)
      G08037176
      		 14 VDB05 (WH)

    Are the resistances less than 3 ohms? 

    1. Yes: GO to 10  .
    2. No: REPAIR the circuit in question.
  10. CHECK THE HS-CAN  CIRCUITS FOR A SHORT TO POWER
    1. Connect: BCM C2280F.
    2. Ignition ON.
    3. Measure:
      DLC Ground
      G08037178
      G08037177
      C251 Ground
      Pin Circuit Measurement Pin Circuit
      6 VDB04 (WH/BU)
      G08037179
      		 - -
      14 VDB05 (WH)
      G08037180
      		 - -

    Is the voltage greater than 3 volts on either circuit? 

    1. Yes: REPAIR the circuit in question.
    2. No: GO to 11  .
  11. CHECK THE HS-CAN  CIRCUITS FOR A SHORT TO GROUND
    1. Disconnect: Negative Battery Cable.
    2. Measure:
      DLC Ground
      G08037182
      G08037181
      C251 Ground
      Pin Circuit Measurement Pin Circuit
      6 VDB04 (WH/BU)
      G08037183
      		 - -
      14 VDB05 (WH)
      G08037184
      		 - -

    Are the resistances greater than 10, 000 ohms? 

    1. Yes: GO to 12  .
    2. No: REPAIR the circuit in question.
  12. CHECK FOR CORRECT BCM OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect the BCM connector.
    3. Repair:
      • corrosion (replace connector or terminals - clean module pins)
      • damaged or bent pins - replace terminals/pins
      • pushed-out pins - replace pins as necessary
    4. Reconnect the BCM connector. Make sure it seats and latches correctly.
    5. Operate the system and verify 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 BCM:

      REFER to BODY CONTROL MODULE (BCM) - WITH INTELLIGENT ACCESS (IA) , or

      REFER to BODY CONTROL MODULE (BCM) - WITHOUT INTELLIGENT ACCESS (IA) .

    2. No: The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
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