LaCrosse fault code p 12746 1

The throttle command/actual throttle position signal changes differently.

1. First, check the power supply and grounding of the throttle position sensor.

2. Then check whether the sum of the voltages of the throttle position sensor 1 and the throttle position sensor 2 is equal to 5 volts.

3. Then check whether there is any virtual connection between the throttle signal I and signal II lines and the computer version.

4. Check whether the pins of the computer board are virtually connected. If the voltage is measured at the throttle, everything is fine. Then the voltage measured at the root needle of the computer version is also normal. Then the computer board broke down. Otherwise, there is something wrong with the line.