9-5 Aero (9600) L4-2.3L Turbo (B235) HO (2000)
![background image](/saab/9-5_aero_(9600)/l4-2.3l_turbo_(b235)_ho/Page-939008.png)
When the ignition is ON, the main relay is operated. Control module pin I is supplied with current from pin 87 of the main relay via fuse 14. This
connection is used internally to supply the throttle motor with current.
Diagnostics
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If no current is supplied to the control module from the main relay, diagnostic trouble code P1640 will be generated, the throttle will close and the
engine will stop.