Pinpoint Test B : The Lane Keeping System Does Not Provide Feedback When Activated
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
- B1 VERIFY FUNCTION OF THE LANE KEEPING DISPLAY LINES
- Verify the lane keeping system turns on and the display lines in the IPC turn green when the system is active and available.
Do the lane keeping display lines turn green when they should be?
Yes GO to B2 No GO to Pinpoint Test A - B2 CHECK THE PSCM (POWER STEERING CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)
- Ignition ON.
- 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 B3 - B3 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 REFER to IPMA DTC Chart . No GO to B4 - B4 CHECK THE STEERING WHEEL VIBRATION
- Change the intensity setting in the lane keeping system message center menu.
Does the steering wheel perform a test vibration after the intensity setting is changed?
Yes GO to B6 No GO to B5 - B5 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION
- Ignition OFF.
- Disconnect and inspect the PSCM 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 PSCM 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, REFER to the EPAS symptom chart. Refer to EPAS GUIDED ROUTINE TESTING -- NAVIGATOR . 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. - B6 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
- Ignition OFF.
- Disconnect and inspect the IPMA connector.
- 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 connector. Make sure it seats and latches correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPMA. REFER to: Image Processing Module A (IPMA) . 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.