Pinpoint Test H: Active Grille Air Shutter Movement Obstructed By Debris
- H1: IDENTIFICATION OF WHICH ACTIVE GRILLE IS OBSTRUCTED TEST
- Set the vehicle into active grille wash mode sequence by starting the engine, set the vehicle into sand mode. After 20 seconds the active grille will open. Using a flash light to look through the front bumper grilles and visually check for debris or other contaminants obstructing the upper and/or lower active grille air shutters to confirm which active vane is being obstructed.
Does the upper active grille appear to be being obstructed?
Yes: If the upper active grille appears to be obstructed GO to H2.
No: If the lower active grille appears to be obstructed GO to H3.
- Set the vehicle into active grille wash mode sequence by starting the engine, set the vehicle into sand mode. After 20 seconds the active grille will open. Using a flash light to look through the front bumper grilles and visually check for debris or other contaminants obstructing the upper and/or lower active grille air shutters to confirm which active vane is being obstructed.
- H2: REPAIR PROCESS FOR THE UPPER ACTIVE GRILLE
- Remove the front bumper radiator grille for access only (see FRONT BUMPER (G2299900)
- steps 1 to 13)
- Remove the upper active grille for access only
- Using a low pressure water hose, flush out the debris/contaminant/obstruction by washing the ducts with a low pressure water jet until all debris are removed. Take care not to damage the cooling pack fins
- Before re-installing the front bumper, repeat Step H1 (see above) to confirm if the active grille is now working properly
Is the active grille now working properly?
Yes: Re-install the front armature and front bumper (see REMOVAL AND INSTALLATION - Front Armature/Front Bumper)
No: Replace the upper active grille. Retest. If issue is resolved, re-install the front armature and front bumper (see REMOVAL AND INSTALLATION - Front Armature/Front Bumper)
- Remove the front bumper radiator grille for access only (see FRONT BUMPER (G2299900)
- steps 1 to 13)
- H3: REPAIR PROCESS FOR THE LOWER ACTIVE GRILLE
- Remove the front bumper radiator grille for access only (see FRONT BUMPER (G2299900) - steps 1 to 13)
- Using a low pressure water hose, flush out the debris/contaminant/obstruction by washing the ducts with a low pressure water jet until all debris are removed. Take care not to damage the cooling pack fins
- Before re-installing the front bumper, repeat Step H1 (see above) to confirm if the active grille is now working properly
Is the active grille now working properly?
Yes: Re-install the front armature and front bumper (see FRONT BUMPER (G2299900) )
No: Replace the lower active grille. Retest. If issue is resolved, re-install the front bumper (see FRONT BUMPER (G2299900) )