Connecting a Battery to Your MPVI Pro Interface for Troubleshooting
To troubleshoot your MPVI Pro Analog inputs to rule out a hardware issue follow the directions below:
| 1. | Insert the raw voltage PID into the #1 slot in your table display. |
| 2. | Connect a 3-5" long piece of 16-20 gauge wire to the #1 port on your MPVI Pro. |
| 3. | Connect a 3-5" long piece of 16-20 gauge wire to the #5 (ground) port on your MPVI Pro. |
| 4. | Connect the #1 piece to the positive terminal of a AA battery and the #5 piece to the negative terminal on the AA battery. |
| 5. | Connect your interface to your vehicle and begin logging. |
Without the AA battery connected the voltage will likely hover around 1.34-1.37 Volts. This is perfectly normal.
New AA batteries will put out approximately 1.5V - 1.6V, so if your interface is reading this voltage perfectly in the scanner then you likely have an issue somewhere else. It may be a custom PID that is incorrect or your wideband controller hasn't been properly configured.
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