9-3 SE Convertible (9400) L4-2.0L Turbo (B205) HO (2001)
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Braking Sensor/Switch: Description and Operation
TC/ABS 5.3
Brake-Lights Switch
Current is supplied to the control module on pin 14 via the brake-lights switch when the brake pedal is depressed.
Information on the status of the brake-lights switch (ON/OFF) is used by the control module as follows:
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If the brake pedal is released and then depressed while the ABS is active, the control module will start from the beginning of the control cycle
again.
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Brake-light switch ON is one of 4 criteria on which the control module determines whether or not to activate the EDB function.
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The pump motor test is normally conducted at 6 km/h (3.7 mph) but with brake light switch ON, the test will be conducted at 15 km/h (9.3 mph).
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If the brake pedal is depressed while the TCS function is active (brake light ON), the TC/ABS control module will disengage the TCS function for
brake application and select the brake function. All other TCS functions will remain in operation.
Diagnostics
