[LMB_e92_335i_v2]

No response from DTC button regardless of pressed or held. Button works, Junction box receives the press (Protool shows this). DSC working fine otherwise, but does not receive the button press.

Both modules recoded to factory VO using protool. Battery disconnected and reconnected. I've done numerous searches across forums and groups and haven't seen anyone with the same issue.

Thanks

[gbalthrop]

Originally Posted by LMB_e92_335i_v2

No response from DTC button regardless of pressed or held. Button works, Junction box receives the
press (Protool shows this). DSC working fine otherwise, but does not receive the button press...

ISTA wiring diagram (SSP), Component Location & Connector Views of pertinent connectors are attached.
If the digital INPUT to JBE is verified by ProTool, when connected to JBE, but NO signal is received by DSC, that suggests
an issue in the F-CAN wiring between JBE X14271/3 or 21, & DSC Connector X18303/26 or 11. The DTC button, S18a, is
"hard-wired" to the JBE, Connector X14272. The JBE sends a signal via the F-CAN bus (at least that's how I interpret the
SSP ;-) to the DSC Module. Apparently the switch is working, & JBE confirms signal from switch when pressed, but DSC is
NOT getting the "Message" via F-CAN bus.

I would inspect the Pins & Sockets of the JBE Connector X14271 (Blue), & the DSC Connector X18303 for damage or
corrosion, & if NONE found, test the wiring for continuity or short to ground. Please let us know what you find.
George