DTC P1565/17973: Throttle Valve Control Module Low Impact Not Reached &/Or DTC P1568/17976: Throttle Valve Control Module Mechanical Malfunction

Throttle Valve Control Module (TVCM) located on intake manifold contains following components:

• Throttle drive actuator.
• Angle sensor No. 1.
• Angle sensor No. 2.

There are no serviceable parts in TVCM, housing should not be opened. Throttle drive actuator is an electric stepper motor activated by the ECM. Stepper motor opens throttle against spring pressure. Angle sensors are potentiometers that communicate throttle valve position to ECM independent of each other. Angle sensors cannot be mechanically adjusted. Adjustments are performed using VAS 5051 scan tool in diagnostic function "04 - BASIC SETTING". See FUNCTION 04 - BASIC SETTING  under SELF-DIAGNOSTIC SYSTEM.

VAS 5051 scan tool and VAG 5051/1 adapter cable are necessary to diagnose this code. Use VAS 5051 to test TVCM. If problem is found, repair as necessary. After repair, use scan tool to clear DTCs and generate a ECM readiness code. See FUNCTION 05 - CLEARING DIAGNOSTIC TROUBLE CODES  and READINESS CODE  under SELF-DIAGNOSTIC SYSTEM. Perform throttle valve control module adaptation procedure. See THROTTLE VALVE CONTROL MODULE ADAPTATION  under SELF-DIAGNOSTIC SYSTEM. Test drive vehicle. Using scan tool, retrieve DTCs. If DTC does not reset, testing is complete.