940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
Control function #1:
This control function will access the fuel injection ECU memory and extract any recorded faults.
Faults stored in the ECU are read via "fault codes" consisting of flashes at the LED.
Control function #2:
This is a function to test selected input components in the fuel injection system. These are the throttle position, RPM and AC compressor signal.
Control function #3:
This is used with the engine stopped. Selected output components are automatically tested and activated to check correct operation.
For more information on how to operate all the functions in the diagnostic socket,