用必要的工具EL-52545识别关键的FOB和REREARN TPMS传感器

The EL-52545 TPMS and RF tool that was shipped as an essential tool to all GM dealerships in October 2019 can help with the diagnosis and repair of systems that rely on Radio Frequency (RF) communications, including the Tire Pressure Monitoring System (TPMS), Keyless Entry (Key Fob Active Functions), Passive Entry and Pushbutton Start.

In addition, it offers the ability to quickly relearn TPMS sensors after a tire rotation or aid with key fob identification. For example, with a key fob in hand, the tool can display the last eight digits of the VIN of the associated vehicle, making it easy to match the fob with a vehicle in the dealership’s inventory or a vehicle in for service.

The EL-52545 tool works with the new Vehicle Intelligence Platform electrical architecture on the 2020 Corvette, CT5 and CT4 as well as with electrical architectures on 2008 and later GM models. The tool also has the ability to service non-GM vehicles, providing support for the dealership’s used vehicle department.

EL-52545 TPMS和RF工具包包括TPMS模块，USB和RJ45电缆，电源适配器，OBD II模块和手带。（图。14）

图14.

Key Fob Diagnosis and Signal Detection

EL-52545工具可用于：

• 从键集合的FOB或独立键读取8位VIN，以及其他数据
• Monitor and display the frequency and signal strength for key fob output
• Monitor and display the signal strength for the Passive Entry/Passive Start system signals from the vehicle to the key fob

保修数据显示，大约37％的返回密钥FOB与VIN符合保修声明，通常是由于在交通运输或客户的交通运输期间与其他关键福管混合起来。EL-52545工具的信号检测功能可用于显示密钥FOB识别以及检查FOB频率和信号强度的能力。（图15）

图15.

TIP:The Pre-Delivery Inspection (PDI) process includes a check of all key fobs. Verify that all functions of both key fobs are working properly. Replacements for missing key fobs should not be submitted as a warranty transaction.

To determine the VIN associated with a key fob, select the Signal Detect function on the EL-52545 tool. From the Fob/Key ID screen, the tool will instruct to place the fob on the small pocket on the back of the tool and press OK. The last eight digits of the VIN and the fob part number will be displayed on the tool. (Fig. 16)

图16

TPMS RELEARN.

A recent GM study of 2018 model year vehicles has shown that TPM DTCs C0750, C0755, C0760, C0765 (Tire Pressure Sensor Low Voltage, Too Few Pulses, and Internal Malfunction codes) combined to account for more than 20% of all codes set, most of which set after a maintenance event (tire rotation) or dealer installation of accessory wheels. The EL-52545 tool changes TPMS relearn communication from radio frequency to writing IDs directly via the Diagnostic Link Connector (DLC) without any time penalty when doing a normal tire rotation. As long as the tool is placed by the proper tire, an incorrect sensor cannot be learned, greatly reducing a common issue of learning a stray sensor on a near-by vehicle.

只要在车辆上在车辆上维修，例如轮胎旋转，或者如果TPMS警告灯照明，则可以使用EL-52545工具的旋转诊断 - Relearn（RDR）功能。（图17）工具上的所有TPMS数据都可以使用。

图17.

工具更新

The EL-52545 tool software updated are available quarterly to ensure the latest information is being used, including new model support. As with other tools, the software updates are available through the gmtoolsandequipment.com website using the link in GlobalConnect.

未来的软件版本将为该工具添加更多功能，包括新的预告片TPMS功能，可用于检查拖车TPMS传感器。

For more information about the EL-52545 TPMS and RF tool, visit gmtoolsandequipment.com or call 1-800-GM-TOOLS.

Additional information about the tool’s features also can be found in the recent GlobalConnect message GCUS-9-9350.

– Thanks to Mike Waszczenko and Rick Jackson