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Home >> Saab >> 1987 >> 9000 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - LH (16-Valve) >> Operation >> Electronic Control Unit (Ecu) Operation

Electronic Control Unit (Ecu) Operation

The ECU is a microprocessor based computer that receives and evaluates readings from various sensors. The control unit then produces a signal that is sent to each injector to ensure the correct amount of fuel delivery for all operating conditions. Located in the right kick panel, it also controls the Automatic Idle Control system.

CAUTION: ECU will be damaged if subjected to temperatures above 176°F (80°C). Always remove ECU from vehicle when welding any part(s) of the vehicle. Do not connect or disconnect ECU unit when ignition is turned on.
NOTE: The LH system on the Saab 900S is the same type as the turbo except with a Blue/Red lead wire connecting Terminal No. 24 of the ECU to terminal NO. 8 of the EZK ignition control unit.
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