I have a problem with my high beams which I have narrowed down to the BCM.
Briefly, the BCM gets a signal from the stalk/switch and is supposed to activate pin 9 which tells the headlamp relay to turn on the lights.. I have a signal from the stalk but the BCM is not passing on the signal to the relay. Tripping the relay manually works the lights.
N.b. I have tried different stalks and even an alternate fusebox during my investigations.. The BCM is definitely the main culprit.
Now... I have removed the beast and taken the lid off. It looks like there are two tracks/circuits to the area around Pin 9.. (I can't quite see under there) and if you follow the tracks out, one of them has a small tarnished "break" (blackened/melted?) in it.
I have circled Pin 9 and "break". Does it look dodgy to anyone who knoes.... or is it normal?
How can I test the circuit from the pin to the track just ahead of the "break", to see whether it is part of the Pin 9 circuit or just coincidentally close to it? If I can get a signal through pin 9 from just before the "break"... I'll be able to test what happens to the circuit on the other side of it.
Ralf S.
Briefly, the BCM gets a signal from the stalk/switch and is supposed to activate pin 9 which tells the headlamp relay to turn on the lights.. I have a signal from the stalk but the BCM is not passing on the signal to the relay. Tripping the relay manually works the lights.
N.b. I have tried different stalks and even an alternate fusebox during my investigations.. The BCM is definitely the main culprit.
Now... I have removed the beast and taken the lid off. It looks like there are two tracks/circuits to the area around Pin 9.. (I can't quite see under there) and if you follow the tracks out, one of them has a small tarnished "break" (blackened/melted?) in it.
I have circled Pin 9 and "break". Does it look dodgy to anyone who knoes.... or is it normal?
How can I test the circuit from the pin to the track just ahead of the "break", to see whether it is part of the Pin 9 circuit or just coincidentally close to it? If I can get a signal through pin 9 from just before the "break"... I'll be able to test what happens to the circuit on the other side of it.
Ralf S.
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