Connect Terminal 30 and Terminal 15 pins to the power supply positive terminal.
Look at the sticker on the side of your ECU. Step 2: Find the "HW:" (Hardware) and "SW:" (Software) numbers. Step 3: Search for: "[Vehicle Year/Make/Model] [ECU Type] pinout" Bosch Ecu Pinout Datasheet
| Pin # | Signal Name | Description | | --- | --- | --- | | 1 | TPS | Throttle position sensor input | | 2 | MAP | Manifold absolute pressure sensor input | | 3 | ECT | Engine coolant temperature sensor input | | 4 | IAT | Intake air temperature sensor input | | ... | ... | ... | | 16 | CAN High | CAN bus high-speed interface | Connect Terminal 30 and Terminal 15 pins to
What is the exact on the ECU sticker (usually a 10-digit number starting with 0 261 ... or 0 281 ... )? What make, model, and year of vehicle is this engine from? Step 3: Search for: "[Vehicle Year/Make/Model] [ECU Type]
Keeps the ECU memory alive when the ignition is turned off.
Similarly, adding a wideband oxygen sensor logger often requires tapping the correct sensor input pin. Knowing which pin has the internal pull-up resistor (common on older Motronic for narrowband O2) prevents damaging the ECU’s analog input.
Pins are numbered sequentially (e.g., 1 to 121) across the connector blocks.