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No Power In On - Conventional Ignition Switch

  1. C1 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) 
    • Enter the following diagnostic mode: BCM  Self-Test.
    • Record all BCM  Diagnostic Trouble Codes (DTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    1. Yes  : If DTC  B1310:14 is present, GO to C2 

      If DTC  B1142:29 is present, GO to  C5

      For all other BCM  Diagnostic Trouble Codes (DTCs),

      REFER to: BODY CONTROL MODULE (BCM) .

    2. No  : If no Diagnostic Trouble Codes (DTCs) are present, GO to  C5
  2. C2 CHECK THE BJB (BATTERY JUNCTION BOX) RUN/START RELAY 

    Is the relay OK? 

    1. Yes  : GO to C3 
    2. No  : INSTALL a new BJB  run/start relay.
  3. C3 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND 
    • Disconnect BCM C2280C  .
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280C-25  OHM Ground

    Is the resistance less than 3 ohms? 

    1. Yes  : REPAIR the circuit.
    2. No  : GO to C4 
  4. C4 CHECK THE RUN/START RELAY CONTROL CIRCUIT FOR AN OPEN 
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280C-25  OHM BJB run/start relay socket, Pin 2

    Is the resistance less than 3 ohms? 

    1. Yes  : GO to  C16
    2. No  : REPAIR the circuit.
  5. C5 CHECK FOR IGNITION ON MODE 
    NOTE: The airbag warning indicator in the IPC  (instrument panel cluster) only illuminates and proves out when the vehicle successfully enters ON mode.
    • Monitor the airbag warning indicator while attempting to enter ON mode.

    Did the airbag warning indicator illuminate? 

    1. Yes  : GO to  C9
    2. No  : GO to C6 
  6. C6 CARRY OUT A NETWORK TEST 
    • Enter the following diagnostic mode on the diagnostic scan tool: Network Test.

    Did the BCM pass the Network Test? 

    1. Yes  : GO to C7 
    2. No  : REFER to: COMMUNICATIONS NETWORK .
  7. C7 CHECK THE BCM (BODY CONTROL MODULE) IGNITION RUN/ACCESSORY OUTPUT CONTROL (IGN_ACC/RUN) PID (PARAMETER IDENTIFICATION) 
    • Using a diagnostic scan tool, view BCM  Parameter Identifications (PIDs).
    • Monitor the BCM PID  IGN_ACC/RUN.

    Does the PID read On when the ignition is in the ON position? 

    1. Yes  : To address the SRS concern,

      REFER to: AIRBAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS) .

    2. No  : GO to C8 
  8. C8 CHECK THE BCM (BODY CONTROL MODULE) IGNITION RUN/ACCESSORY INPUT CONTROL (IGN_R/A_INPT) PID (PARAMETER IDENTIFICATION) 
    • Monitor the BCM PID  IGN_R/A_INPT.

    Does the PID read On when the ignition is in the ON position? 

    1. Yes  : GO to  C16
    2. No  : CARRY OUT the ignition switch component test.

      Refer to OEM WIRING DIAGRAMS COMPONENT TESTING -- (EXCEPT HYBRID) for additional information.

      If the ignition switch tests OK, GO to  C11 If not OK, INSTALL a new ignition switch.

      REFER to: IGNITION SWITCH  .

  9. C9 CHECK THE BCM (BODY CONTROL MODULE) IGNITION RUN/START OUTPUT CONTROL (IGN_RUN/STRT) PID (PARAMETER IDENTIFICATION) 
    • Monitor the BCM PID  IGN_RUN/STRT.

    Does the PID read On when the ignition is in the ON position? 

    1. Yes  : CARRY OUT the BJB  run/start relay component test.

      Refer to OEM WIRING DIAGRAMS COMPONENT TESTING -- (EXCEPT HYBRID) for additional information.

      If the run/start tests OK, GO to  C13 If not OK, INSTALL a new run/start relay.

    2. No  : GO to C10 
  10. C10 CHECK THE BCM (BODY CONTROL MODULE) IGNITION RUN/START INPUT CONTROL (IGN_R/S_INPT) PID (PARAMETER IDENTIFICATION) 
    • Monitor the BCM PID  IGN_R/S_INPT.

    Does the PID read On when the ignition is in the ON position? 

    1. Yes  : GO to  C16
    2. No  : CARRY OUT the ignition switch component test.

      Refer to OEM WIRING DIAGRAMS COMPONENT TESTING -- (EXCEPT HYBRID) for additional information.

      If the ignition switch tests OK, GO to  C14 If not OK, INSTALL a new ignition switch.

      REFER to: IGNITION SWITCH  .

  11. C11 CHECK FOR A SHORT TO GROUND ON THE BCM (BODY CONTROL MODULE) ACC/RUN INPUT CIRCUIT 
    • Ignition OFF.
    • Disconnect BCM C2280G  .
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280G-50  OHM Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes  : GO to C12 
    2. No  : REPAIR the circuit.
  12. C12 CHECK FOR AN OPEN ON THE BCM (BODY CONTROL MODULE) ACC/RUN INPUT CIRCUIT 
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280G-50  OHM C250-6 

    Is the resistance less than 3 ohms? 

    1. Yes  : GO to  C16
    2. No  : REPAIR the circuit.
  13. C13 CHECK FOR A SHORT TO VOLTAGE ON THE RUN/START CONTROL CIRCUIT 
    • Ignition OFF.
    • Disconnect BJB C1035A  .
    • Disconnect BCM C2280C  .
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280C-25  VOLTAGE Ground

    Is any voltage present? 

    1. Yes  : REPAIR the circuit.
    2. No  : GO to  C16
  14. C14 CHECK FOR A SHORT TO GROUND ON THE BCM (BODY CONTROL MODULE) RUN/START INPUT CIRCUIT 
    • Ignition OFF.
    • Disconnect BCM C2280G  .
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280G-37  OHM Ground

    Is the resistance greater than 10, 000 ohms? 

    1. Yes  : GO to C15 
    2. No  : REPAIR the circuit.
  15. C15 CHECK FOR AN OPEN ON THE BCM (BODY CONTROL MODULE) RUN/START INPUT CIRCUIT 
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2280G-37  OHM C250-1 

    Is the resistance less than 3 ohms? 

    1. Yes  : GO to C16 
    2. No  : REPAIR the circuit.
  16. C16 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION 
    • Disconnect and inspect all BCM  connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the BCM  connectors and all other previously disconnected connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    1. Yes  : CHECK OASIS  for any applicable Technical Service Bulletins (TSBs). If a TSB  exists for this concern, DISCONTINUE this test and FOLLOW TSB  instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new REFER to: BODY CONTROL MODULE (BCM) .

      BCM  .

    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.
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