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Hello, i have a problem with a customer truck, truck doesnt crank, computer is not sending ground to starter relay, codes that i have are b1881 and b2103, everything indicates that is the anti-theft transceiver that is bad but i have a few questions before i replace that.
things that ive done already are: checked fuses that goes to transceiver module and antitheft indicator, everything good, checked lines and fuses that goes to body security module and everything is good.
the antitheft indicator is not working at all, i checked an it needs ground from computer also, so my question is if the transceiver is bad or doesnt read the key will that cut the ground to anti theft indicator also? or is normal for the indicator not work when the transceiver is bad? any way i can check the transceiver with an oscilloscope? i have diagrams for everything i just need your expertise in this system, TIA.
Hello, yes i did unplug the connector to the pcm and put ground on that wire with my power probe and indicator light is working fine, that ground that i need for the indicator light needs to coming from the pcm and if i see the diagram it says Signal same as for the starter relay it says "signal".
I have no idea if is an input problem or the pcm is not working right which i really doubt, but i cant find that info anywhere.
Im still having same code b1681
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