Electronic Control Unit (ETS ECU) - Saab 1992 900 L4-2118cc 2.1L DOHC Service Manual

Electronic Control Unit (ETS ECU)

Need a step-by-step guide?

Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1992 Saab.

The ETS ECU receives information on a variety of engine parameters, which it processes before sending appropriate control signals to the throttle housing.
The ECU has an integral self-diagnostics function which is activated every time the ignition is switched off. On power off, automatic testing takes place of all functions and the latest adaptive values are added to memory.
The ECU monitors operation of the system continuously, and if a fault is detected that could affect safety, immediately switches to the limp-home function.