9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT) (2003)
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Main Relay (Computer/Fuel System): Description and Operation
Main Relay
The main relay is located in the relay holder under the dashboard by the steering wheel.
+15 is supplied to control module pin 43 when the ignition is turned to "ON". The control module then grounds pin 26 and the main relay operates. The
control module also receives supply voltage on pin 1 from main relay pin 87 at the same time. The control module supply is used internally to feed the
throttle motor.
When the ignition is turned to the "OFF" position, the main relay will operate for a further 10 seconds to enable adaptation of the throttle valve to fully
closed position.
Diagnostics
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If there is an open circuit or short circuit to ground, diagnostic trouble code P1652 will be generated.
