Hazard warning lights switch (25): Connection
The lead to the button is supplied 10.2 V via a BCM integrated resistor of 1.5 kO. 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):
CONNECTOR PINOUTS REFERENCE
| 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):
CONNECTOR PINOUTS REFERENCE
| 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 |