New EL-52641Trailer Presence Simulator Tester

The recently released EL-52641 Trailer Presence Simulator Tester is a trailer module tester and trailer simulator that can be used to simulate a trailer connected to the vehicle when performing trailer signal diagnostics and trailer tire pressure monitor sensor programming.

The EL-52641 Tester includes a simulator module equipped with indicator lights and a 25 ft. cable with a trailer 7-pin connector. (Fig. 8) The long cable makes it easy to conduct and review diagnostic tests from inside the vehicle.

 

 

Fig. 8

Testing

The tester features indicator lights that provide feedback on the vehicle signals sent to the trailer for the reverse lights, battery power, right turn signal and brake light, left turn signal and brake light, and brake controller output. Several trailer diagnostic procedures have been updated in the Service Information using the tester, including trailer lamps malfunction conditions and trailer tire pressure sensor DTCs.

To use the tester for signal testing, simply plug the 7-way connector of the tester into the trailer connector port at the rear of the vehicle. With the vehicle running, verify the 12V circuit is powered or turn on the tail light circuit. Activate each circuit while monitoring the corresponding indicator light on the tester. For example, activate the left turn signal and the LT (left turn signal) indicator light on the tester should illuminate. Or apply the brakes and shift to Reverse and the RL (reverse lights) indicator light and the LT (left turn signal) and RT (right turn signal) indicator lights on the tester should illuminate, showing that the reverse lights and brake lights are working properly.

For vehicles equipped with an Integrated Trailer Brake Controller, a Trailer Connected message should display on the Driver Information Center.

 

TPM Programming

The EL-52641 Tester also can be used to simulate the presence of a trailer in order to learn the trailer tire pressure monitor sensors in a case where the actual trailer is not available.

After plugging the 7-way connector of the tester into the trailer connector port, follow the appropriate Service Information procedure to learn the trailer tire pressure monitor sensors.

For more information and to review special pricing for the EL-52641 Trailer Presence Simulator Tester (Fig. 9), log in to GM GlobalConnect, select Service from the Departments menu, and then select the Special Service Tools website link.

Fig. 9

– Thanks to Chuck Berecz

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3 Comments

  1. The EL-52641 Trailer Presence Simulator Tester is an available tool. The tool is not shipped to all dealers.

  2. Is it essential or not?

  3. Is this a essential tool that will be shipped out to dealers or does the dealer have to call and order one?