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Peugeot 206 1.4 HDi 2004: No Power to BSM F15/F2 Fuses, Relay Not Activating, ECU Dead

Kiza69 282 3
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  • #1 21852291
    Kiza69
    Level 1  
    Hello, guys. Please, if you can, help me.
    On the BSM of my Peugeot 206 1.4 HDi, 2004, on fuses F15 (30 A) and F2 (15 A), I have no power when I turn on the ignition. The relay does not turn on. That is why the ECU has no power, and I cannot start the car. It turns over but does not start.
    These are the two fuses marked in the picture. Gray connector: pin 9 got 12 V from the ignition, and pin 14 should have 12 V to activate the relay that turns on these two fuses, but there is none. When I bring 12 V from pin 9 to pin 14, the relay turns on, I get voltage, and I can start the car. Is it the BSM, the BSI, or something else that can generate this problem? All fuses, both in the engine and in the passenger compartment, are fine.

    Car fuse box with wiring harness and red notes about pin 9 and pin 14 voltage




    AI: Have you checked the BSM, BSI, and wiring for any signs of water ingress, corrosion, or physical damage?
    Yes. No signs of water ingress, corrosion, or physical damage.
    AI: Did any recent work, electrical modifications, or incidents (like battery replacement, jump starting, or a short circuit) happen before this problem started?
    No.
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  • #2 21853006
    Henry0769
    Level 4  
    It would be worth looking at the control of the sonic relay, in which case it is probably integrated into the BSM.
    i.e., the cable connecting the ECU-BSM. The engine controller gives ground when it receives terminal 15, i.e., 12 V after the ignition.
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  • #3 21854536
    MISIEK2018
    Level 16  
    Perhaps an ignition switch?
  • #4 21854733
    Henry0769
    Level 4  
    Checking the voltage after the ignition at the ECU will dispel any doubts with the ignition.
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