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Pinpoint Test A : The Lane Keeping System Does Not Turn On Or Activate

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NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector. Use only Rotunda Flex Probes (NUD105-R025D)

  1. A1 VERIFY THE CONCERN

    • Verify the operation of the lane keeping system (lane keeping aid and lane keeping alert).

    Does the lane keeping system operate correctly? 

    Yes  The system is operating correctly at this time. The concern may have been caused by high network traffic or the driver's perception of how the lane keeping system operate. REFER to the Owner's Manual.
    No  GO to  A2

  2. A2 PERFORM A NETWORK TEST

    • Ignition ON.
    • Using a diagnostic scan tool, perform a network test.

    Do all modules pass the network test? 

    Yes  GO to  A3
    No  REFER to: Communications Network .

  3. A3 CHECK THE IPMA (IMAGE PROCESSING MODULE A) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, check the IPMA Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  For DTC B13A6:14, GO to  A9
    For all IPMA Diagnostic Trouble Codes (DTCs) other than B13A6:14, REFER to the IPMA DTC chart .
    No  GO to  A4

  4. A4 CHECK THE PSCM (POWER STEERING CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, check the PSCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  REFER to: Power Steering .
    No  GO to  A5

  5. A5 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, check the SCCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  REFER to: Steering Wheel and Column Electrical Components .
    No  GO to  A6

  6. A6 CHECK THE BCM (BODY CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, check the BCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  REFER to: Body Control Module (BCM) .
    No  GO to  A7

  7. A7 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, check the RCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  REFER to: Airbag Supplemental Restraint System (SRS) .
    No  GO to  A8

  8. A8 VERIFY THE IPMA (IMAGE PROCESSING MODULE A) LANE KEEPING SYSTEM SWITCH PID (PARAMETER IDENTIFICATION)

    • Using a diagnostic scan tool, view the IPMA lane keeping system switch PID: (LKS_SW_ST).
    • While monitoring the PID, press and release the lane keeping system switch several times.

    Does the PID consistently match the switch position? 

    Yes  GO to  A13
    No  GO to  A9

  9. A9 CHECK THE LANE KEEPING SYSTEM SWITCH CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Disconnect: Lane Keeping System Switch C3466 .
    • Disconnect: Auto-Dimming Interior Mirror C9012 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3466-4
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  A10
    No  REPAIR the circuit.

  10. A10 CHECK THE LANE KEEPING SYSTEM SWITCH CIRCUIT FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3466-4
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C9012-9

    Is the resistance less than 3 ohms? 

    Yes  GO to  A11
    No  REPAIR the circuit.

  11. A11 CHECK THE LANE KEEPING SYSTEM SWITCH GROUND CIRCUIT FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C3466-3
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  A12
    No  REPAIR the circuit.

  12. A12 CHECK THE LANE KEEPING SYSTEM SWITCH OPERATION

    • Connect: Lane Keeping System Switch C3466 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9012-9
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms with the switch pressed and greater than 10, 000 ohms with the switch released? 

    Yes  GO to  A13
    No  INSTALL a new lane keeping system switch. REFER to: Active Park Assist Switch .

  13. A13 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

    • Ignition OFF.
    • Disconnect and inspect the IPMA connectors and related in-line 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 IPMA connectors and related in-line connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, DISCONTINUE this test and FOLLOW the Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new IPMA (integral to the interior rear view mirror). REFER to: Interior Rear View Mirror .
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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