Pinpoint Test F: The Automatic High Beam Feature Is Inoperative
- Normal Operation and Fault Conditions
REFER to: Exterior Lighting - Overview . REFER to: Exterior Lighting - System Operation and Component Description .
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition IPMA B11C7:46 High Beam Sensor: Calibration/Parameter Memory Failure A continuous memory DTC that sets when the IPMA detects a software problem with the calibrations. IPMA B11C7:97 High Beam Sensor: Component Or System Operation Obstructed Or Blocked A continuous memory and on-demand DTC that sets when the IPMA detects a blockage in front of the high beam sensor. Possible Sources
- Windshield debris
- IPMA
- NOTE: In cold weather conditions (4 deg.C [40 deg.F] or less), the auto high beams are inhibited for 10 minutes to allow the camera windshield defrost heater to clear the windshield in front of the auto high beam camera.
- F1 VERIFY THE HIGH BEAM HEADLAMP OPERATION
- Place the headlamp switch in the HEADLAMPS ON position.
- Place the LH steering column multifunction switch in the HIGH BEAM position while observing the headlamps.
Do the high beam headlamps illuminate?
Yes GO to F2 No F GO to Pinpoint Test B - F2 CHECK FOR IPMA (IMAGE PROCESSING MODULE A) DIAGNOSTIC TROUBLE CODE (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, perform the IPMA self-test.
Is DTC B11C7:97 present?
Yes GO to F4 No If no Diagnostic Trouble Code (DTCs) are present or only DTC B11C7:46 is present, GO to F3 If any other IPMA Diagnostic Trouble Code (DTCs) are present, REFER to: Lane Keeping System . - F3 CARRY OUT THE IPMA (IMAGE PROCESSING MODULE A) PMI (PROGRAMMABLE MODULE INSTALLATION) AND RETEST
- Carry out the IPMAPMI. REFER to: Module Configuration - System Operation and Component Description .
- Clear the Diagnostic Trouble Codes (DTCs). Repeat the self-test.
Is the concern still present?
Yes 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 temporary sensor obstruction. - F4 VERIFY THAT THE AUTOMATIC HIGH BEAM SENSOR IS NOT BLOCKED
- Visually verify the automatic high beam sensor is not blocked. Sources of blockage can include:
- stickers, window decals or tags.
- non-OEM window tinting.
Was the automatic high beam sensor blocked?
Yes If possible, REMOVE the blockage. TEST the system for normal operation. If the blockage cannot be removed, REVIEW the operation of the automatic high beams with the customer. No INSTALL a new IPMA. REFER to: Image Processing Module A (IPMA) . - Visually verify the automatic high beam sensor is not blocked. Sources of blockage can include: