Hazard warning lights switch (25)
| Hazard warning lights switch (25) |
| Main task |
Used to activate hazard warning lights and to indicate that they are active. BCM transmits the function status on the bus.
| Type |
The button is single-pin, has a return spring and closes to ground when depressed. The button also contains an indicator lamp that is grounded internally.
| Connection |
The lead to the button is supplied 10.2 V via a BCM integrated resistor of 1.5 kΩ. Control module inputs are digital; voltage over 2V is interpreted as an open circuit while voltage lower than 2V is interpreted as closed.
The indicator lamp in the button is supplied battery voltage from BCM in order to light.
Switch mounted in ACC (216):
|
Pin No.
|
Signal type
|
Description
|
| 15 | Ground | ACC control module's ground connection in the body |
| 19 | Supply from BCM | Supply to indicator lamp from BCM pin A17 (K78) |
| 26 | Supply from BCM | From BCM pin B61 (K78), the pin is grounded when it is pressed in |
Switch mounted in MCC (504):
|
Pin No.
|
Signal type
|
Description
|
| 2 | Supply from BCM | Supply to indicator lamp from BCM pin A17 (K78) |
| 10 | Ground | MCC control module's ground connection in the body |
| 19 | Supply from BCM | From BCM pin B61 (K78), the pin is grounded when it is pressed in |
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