Over the weekend and last night I have been trying to operate and get usage out of the green diagnostic connector. (no biggy here, just playing)

I have tried two methods,

1. Bluepoint DataCheck 200 & 300 device dedicated to this connection for the Mi16 Engine and equivalents in the Peugoet / Citroen group

2. Shorting the connector to ground via a breaker swich to read the output via the check engine warning light.

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Both methods on the two cars (205 with Mi16 & 405 Mi16) - Nothing happens - Nada, dead, diddly squat! I though maybe the 205 would cough at it because I have changed the harness to suit the Mi16 implant, but the 405 Mi16 is factory.

Any suggestions?