Brakelight switch: Notes
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Current is supplied to the control module on pin 14 via the brakelight switch when the brake pedal is depressed.
Information on the status of the brakelight switch (ON/OFF) is used by the control module as follows:
- 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.
- Brakelight switch ON is one of 4 criteria on which the control module determines whether or not to activate the EDB function.
- 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).
- 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.