Tech Tips January 2017 (TIPS 0117)

TECH TIPS JANUARY 2017

TECHNICAL SERVICE BULLETIN

06 2017MY IMPREZA WITH REVERSE AUTOMATIC BRAKING (RAB), RED AREA APPEARS IN BACK-UP CAMERA DISPLAY

If a customer states they see a red box or area in their back-up camera display, the system may very well be operating as designed. Always perform a visual check of the sensors on the rear bumper first. If any of the sensors are covered over or obstructed by ice and / or snow, the RAB system may not function properly and the red area shown in the example photo below will most likely appear. When this occurs, the RAB system is unable to properly differentiate between what really is an obstacle and what is not. In this case, the sensor is iced over and the red area is displayed with no obstacle present. The Owner's Manual provides a list of other potential causes for this condition to occur:

07 POWER WINDOW OPERATION ERRATIC, CANNOT PROGRAM MEMORY

If you encounter a power window that will not fully close when using the auto up/down feature, then re-opens slightly, there are a few items which should be inspected before proceeding with component replacements. Typically, when this condition occurs, the power window controller within the window switch has recognized an unwanted variation in motor speed indicating an object blocking the window from closing. In order to prevent damage, or possible injury, the auto-reverse function will be enabled and the window will move in the reverse direction. When the window operates in auto-reverse mode, this results in window memory loss. We would like to provide inspection points and helpful tips to use when diagnosing this condition and programming the window memory as outlined in the Service Manual:

• Using a cleaning agent, rag, and plastic trim tool, clean the run channel seal and window glass thoroughly of dirt and debris that could potentially cause a binding condition. → (See Figure 1  )
• Inspect the run channel seal for bulging, proper fit, and placement in the run channel.
• If the vehicle has been in a collision with the door exhibiting the window issue, inspect installation of all affected components.
• Repeated attempts at learning the window memory could potentially overheat the motor, resulting in further difficulties. Allow the window motor to cool before proceeding with any further testing.
• The logic for the Auto-Reverse function is housed within the power window switch so, swap with a known good vehicle to test functionality.

07 NO HYBRID AUTO START STOP OR EV TRAVEL

The Techline has been receiving an increased amount of calls on Hybrid vehicles with a concern of no auto start stop operation, with or without DTCs. If you encounter one of these issues, a necessary step to include into your diagnosis should be to check the 12V Restart battery condition with the GR8. We have seen a bad restart battery accompany DTCs related to the Integrated Starter Generator (ISG) along with disabling both the Auto Start Stop and EV traveling modes. If DTCs are involved, the applicable troubleshooting procedure should be followed including the battery testing. If questioning the necessary conditions required for EV travel or Auto Start Stop operation, this can be found in the applicable Service Manual under the HYBRID ELECTRIC VEHICLE (DIAGNOSTICS) > Read Current Data > Operation section. Figure 1 is an excerpt from the 2014 XV Crosstrek Hybrid Service Manual highlighting the 12V restart battery parameters which must be met before either mode is enabled.

The information on the electrical system shown below in Figure 2 can be found under General Specifications in the Service Manual. Always review the applicable Service Manual before testing any electrical system.

07 BIU REPLACEMENT

The Techline continues to receive calls from Technicians about issues after replacing a BIU. For example, not switching the Factory Initial Setting from "Factory" to "Market" typically results in the pocket lights, dome lights, and key ring flashing. As shown below in Figure 1  , prior to replacing the BIU it is required to check and record the current customized settings. This can be achieved through the work support function utilizing the SSM4. More information on this can be found in the April 2016 TechTIPS Newsletter. Once BIU installation is complete, the unit must be customized to match the recorded settings.

09 P05A0 AND ACTIVE GRILL SHUTTER INSPECTION

If you encounter DTC P05A0 ACTIVE GRILLE SHUTTER "A" STUCK in any Subaru vehicle, it is imperative the Active Grill Air Shutter assembly is completely inspected for debris or damage. This DTC is detected when the open or close operation of the Active Grill Shutter is disabled due to foreign debris such as rocks, walnuts, or ice. Using the SSM4, Technicians should save the FFD  associated with this DTC and proceed to visually inspect the Active Grill Shutter for debris that would prevent proper operation. If there are no visible debris present that would prevent operation, front bumper cover removal is required for an inspection. Below in the image labeled Figure 1  is a rock that prevented operation of the Active Grill Shutter, and could not be seen with the bumper cover installed.

Now below in the image labeled Figure 2,  you can see how difficult it would be to see this obstruction with the front bumper cover installed.

15 2017 AUTO-DIMMING OUTSIDE MIRROR LIMITED MOVEMENT

There have been reports of the exterior mirror glass not traveling its full range of motion on the 2017 Impreza equipped with exterior auto-dimming mirrors. Upon further investigation, it is possible the Friction Damper Spring could have been inserted into the incorrect position resulting in the condition. If the friction damper spring is not located in the correct position it will limit the amount of travel for the mirror glass. We have provided an inspection and repair procedure to address this concern as outlined below.

Remove the mirror glass from the mirror housing as outlined in the Service Manual and inspect the position of the friction damper spring as seen in Figure 1.  Depending on its position will determine if the spring was installed in the correct slot.

If it is determined the spring is bent in the incorrect position, it will need to be realigned to be inserted into the holder shown in Figure 2  .

Once the spring is realigned for correct installation, verify the connector below in Figure 3  is seated into the correct position so it does not interfere with reassembly.

Reinstall the mirror glass by firmly pressing it into the holder (you will feel it snap into place). Confirm your repair was successful by operating the mirror through its full range of movement.

15 2017 MY FORESTER WHEEL ARCH MOLDING INSTALLATION

The 2017MY Forester Accessory Wheel Arch Molding (WAM) kit is now available for Retailer Installation only. A video was created to detail the actual 2017MY Forester Wheel Arch Molding installation from start to finish. The WAM video is an addition or supplement to the WAM retailer installation instructions posted on STIS.