DDE communication

jad1604 · 06-10-2024, 03:34 AM

Hello all,

One morning, I tried to start my E84; it cranked but did not start. I ran a diagnostic with ISTA and found no communication with the DDE. I tested both relays under the hood, and they are okay.

Next, I measured the voltage on the DDE connectors, but I never got 12V. Consequently, I checked the terminal 30 of the blue relay coil (K2003A) and found no 12V at any time.

The next step I want to take is to try running a manual 12V cable to my coil to close the contact and see if this allows me to power my DDE.

Do you have any suggestions for me?

DomMuc · 06-10-2024, 11:02 AM

12V line on underbody corroded....

06-10-2024, 03:34 AM	#1
jad1604 New Member 1 Rep 11 Posts Drives: G31 520Da xD / E46 328i Join Date: May 2018 Location: France iTrader: (0)	DDE communication Hello all, One morning, I tried to start my E84; it cranked but did not start. I ran a diagnostic with ISTA and found no communication with the DDE. I tested both relays under the hood, and they are okay. Next, I measured the voltage on the DDE connectors, but I never got 12V. Consequently, I checked the terminal 30 of the blue relay coil (K2003A) and found no 12V at any time. The next step I want to take is to try running a manual 12V cable to my coil to close the contact and see if this allows me to power my DDE. Do you have any suggestions for me?
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06-10-2024, 11:02 AM	#2
DomMuc Lieutenant 620 Rep 510 Posts Drives: G87 M2 Join Date: Nov 2012 Location: Munich iTrader: (0)	12V line on underbody corroded....
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