Vehicles Without CAN-Bus

Note: DTC 005181 / P0121 for vehicles without a CAN-Bus A) (with CAN-Bus see previous DTC):





DTC 005181 / P0121 part 1 of 2

1) One of these indications is displayed for the relevant component.
2) On vehicle with Motronic fuel injection and ignition, the only malfunction that will be displayed is "incorrect signal".
3) Pay attention to which control the transmission has when selecting measuring value block.
A) A differential 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 vehicle types without CAN-Bus A):
^ The signal is transmitted in digital form from the throttle position sensor "G89- 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 breif interuption in the throttle position signal (up to 1 second) is not detected by the (ECM), but is registered as a malfunction by the (TCM).
^ Requirements for malfunctions recognition: frequency of digital signal to TCM as outside the permissible tolerance (signal pulse must occur at least every 30ms.

^ DTC 00518 / P0121 for vehicles with a CAN-Bus see previous DTC