Traditional bulb test lights draw too much current and can instantly destroy delicate ECU internal circuits. Always use a high-impedance digital multimeter (DMM).
While digital is great, reading tiny pin numbers on a glowing screen in bright daylight can be difficult. 2nz fe ecu pinout pdf 186 portable
Before testing any sensors, you must ensure the ECU is getting power. Switched 12V power from the EFI relay. Traditional bulb test lights draw too much current
Ground circuits. E1 is usually the main logic ground, while E01 and E02 are high-current grounds for injectors and coils. 2. Ignition and Firing (IG) 2nz fe ecu pinout pdf 186 portable
Print out just the pages showing the .