Simos 33a Pinout Top
[Simos 3.3A Multi-Connector Layout] +-------------------------------------------------------+ | [Pin 1: GND] | | [Pin 2: GND] | | [Pin 3: +12V VCC] | | [Pin 41: CAN-H] [Pin 42: CAN-L] | | [Pin 43: K-Line] | | | | [Pin 62: Ignition] +-------------------------------------------------------+ Grounding the Boot Pin
Sometimes you don't have a pinout table. Using the of the PCB, you can identify critical connections with basic tools.
Use the following reference layout to establish stable bench connections using tools like an : ⚡ Power and Ground Pins
Current Flow Diagram for Simos Control | PDF | Fuel Injection - Scribd simos 33a pinout top
This connector typically handles the core engine management sensors.
Recovering bricked ECUs, writing full internal EEPROM, performing Immo Off.
: Standard connection to the ECU case or designated ground pins. [Simos 3
The Bosch (often stylized as SIMOS 33A) is a prevalent Engine Control Unit (ECU) found in a vast range of modern Volkswagen, Audi, Seat, and Skoda vehicles. From the 1.4 TSI EA211 engines to the 2.0 TDI evo, this compact, high-performance ECU controls everything from fuel injection and ignition to turbocharger management and OBD diagnostics.
When working with the top view , always ensure no metal tools touch two adjacent pins. The Simos 33A operates at 5V logic levels; a short between 5V_REF (Pin 31) and Sensor GND (Pin 30) will instantly destroy the 5V regulator.
is designated for the signal from the second petrol injector. Sensor Inputs G28 Engine Speed Sender : Crucial for determining RPM and ignition timing. Knock Sensors From the 1
Secure the CAN High and CAN Low leads to Pins 68 and 67 using fine-tipped probe needles or high-quality alligator clips.
: The Simos unit relies on a current supply relay (typically labeled "10" or "100" in the relay box). Where to Find Full Diagrams