DTC 00518

DTC 00518 / P0121








1) Pay attention to which hydraulic control the transmission has when selecting measuring value block. For a more detailed description; Refer to"Read measuring value block".

A) A differentiation is made between vehicle types with and without CAN-bus. Precise definition of which vehicles are equipped with CAN-bus.

Note:

For DTC 00518 / P0121 for vehicles with CAN-Bus A):

^ The signal from the throttle position sensor -G39- is transmitted by the engine control module to the transmission control module via the CAN-bus.
^ Requirements for malfunction recognition: Malfunction of the component is recognized by the Engine Control Module. This diagnostic is transmitted to the Transmission Control Module (TCM) via the CAN bus wiring.
^ DTC 00518 / PO121 for vehicles without a CAN-Bus = next DTC.

Note: DTC 00518 / P0121 for vehicles without a CAN-Bus A) (with CAN-Bus = previous DTC):








Note: For DTC 00518 / P0121 for vehicle types without CAN-Bus A):
^ The signal is transmitted in digital form from the throttle position sensor "G69- via the Engine Control Module (ECM) to the Transmission Control Module (TCM).
^ Malfunction recognition of DTC 00518 by the TCM is much more sensitive than detection by the ECM. This means that a brief interruption in the throttle position signal (up to I second) is not detected by the ECM, but is registered as a malfunction by the TCM.
^ Requirements for malfunction recognition: frequency of digital signal to TCM is outside the permissible tolerance (signal pulse must occur at least every 30 ms).
^ DTC 00518 / PO 121 for vehicles with a CAN-Bus => previous DTC