Auto Service Professional

JUN 2018

Magazine for the auto service professional

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28 A S P J u n e 2 018 tem is the ability to move the wipers slightly on a key cycle to stop the rubber edge of the wiper blades from taking a lasting set to the contour of the windshield from the pressure of the wiper arms, increasing the life of the blades. VW/Audi and others have done this, and if the customer is unaware of this feature, it can lead to a complaint that the wipers move slightly during start-up, while this is normal wiper operation. A scan tool is now vital for diagnosing many wiper-related issues, as is up-to-date service infor- mation for effective repairs. Bidirectional controls, re-initializing, finding failed communications net- works, components or modules can't typically be done now without the use of a scan tool. In today's networked module-based wiper era, the days of just using a 12 V test light for wiper diagnostics is almost behind us. ■ Jeff Taylor boasts a 33-year career in the automotive industry with Eccles Auto Service in Dundas, Ontario, as a fully licensed professional lead technician. While continuing to be "on the bench" every day, Jeff is also heavily involved in government focus groups, serves as an accomplished technical writer and has competed in international diagnostic competitions as well as providing his expertise as an automotive technical instructor for a major aftermarket parts retailer. This screen capture from a Ford F-150 shows a faulty switch. The wiper switch was in the "OFF" position but shows an "ON" intermittent data 5. These switches are a common failure item. This screen capture shows the park switch input on a Dodge. It should toggle from true to false as the wiper moves from the park position. Corroded TIPM wiring is a common cause of park sense fault codes and wiper issues. W i p e r S e r v i c e

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