Connecting a KPro ECU to an OBD2 port in a 1991 Toyota MR2T can be challenging, especially when dealing with aftermarket Android stereos. This article explores common connectivity problems and potential solutions for using a Kpro Obd2 with various devices and applications.
The owner of a 1991 Toyota MR2T, a vehicle not originally equipped with OBDII, is facing challenges connecting their KPro to a new Android car stereo. The stereo’s Bluetooth system requires a specific dongle, limiting connectivity options. While apps like Hondata, RealDash, and Torque connect directly to the KPro via the phone’s Bluetooth, they fail to connect through the stereo’s Bluetooth dongle. The apps display error messages such as “Ignition not on” or no connection indication.
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The core issue lies in the Android stereo’s Bluetooth restrictions. The manufacturer has locked down the system, requiring their proprietary dongle for OBD2 connectivity. This limitation prevents the use of standard Bluetooth OBD2 adapters and forces reliance on the manufacturer’s potentially less versatile hardware.
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Troubleshooting steps include verifying the KPro’s compatibility with the Bluetooth dongle and ensuring the car’s ignition is on when attempting connection. Testing the dongle with other OBD2 devices might isolate the problem. Direct connection to the KPro with a phone confirms its functionality, pointing towards an incompatibility between the KPro OBD2, the dongle, and the stereo’s Bluetooth system.
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A potential workaround involves hardwiring an OBD2 port into the car, bypassing the stereo’s Bluetooth entirely. This requires identifying the correct wiring configuration for the KPro and the vehicle’s electrical system. However, this solution may require advanced technical knowledge and careful execution to avoid damaging the car’s electronics.
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Ultimately, resolving the KPro OBD2 connectivity issue in this scenario likely hinges on the stereo manufacturer’s willingness to unlock the Bluetooth restrictions or provide a compatible solution. Until then, exploring alternative connection methods or considering a different Android stereo that allows open Bluetooth pairing with OBD2 adapters might be necessary.
