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Old 04-06-2021, 05:24 PM
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The list goes on ffs

Evening all, yet another issue with the x5. I've got a communication error with the obd port and no eml at ignition I've checked every single fuse in the car all OK and car starts and drives fine it's a 2002 model and doesn't have the 20pin connector under the hood, all pins in the port itself are good and the 5 different scanners including 2 inpa k-line are all new and still not connecting, any help is appreciated
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Old 04-06-2021, 06:16 PM
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Check basic things on OBD connetor.

Pin 1 Voltage (ignition switched)
Pin 4 Ground
Pin 5 Ground
Pin 7 Diagnostic line to powertrain modules (DME, EGS)
Pin 8 Diagnostic connector to all other modules (via cluster and I-/K-bus)
Pin 16 Voltage (continuous)

When ignition switched to pos. 2 there should be voltage >2 V on diagnostic lines 7 and 8 so communication is possible.
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Old 04-06-2021, 10:27 PM
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+1
And last but not least check for a cracked OBD2 block because once something is plugged into it a crack expands and you can loose connectivity.....

(Personal experience on the White Witch)

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Old 04-07-2021, 12:12 AM
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Where's the best ground in the drivers footwell to test with multimeter
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