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Dead instrument cluster

828 views 0 replies 1 participant last post by  Orchid70 
#1 ·
Almost totally dead instrument cluster - the car still runs.
Durango 2002, 4,7L
Right side turn signal indicator works.
The back lighting on the cluster house works.
Fault code P1698 - No bus communication
I can only connect to engine PCM/ECU - no other ECU on the car, with OBD reader
There is 12 V on right hand connector, pins: 2, 6 and 7
There is ground on pins 4 and 5
But, pin 9 (violet/yellow) should have reference 5V - looks like this, ignition off at first.

With Crankshaft positions sensor, Camshaft positions sensor and MAP connectors removed - the same, the instrument cluster is dead
Short somewhere - but where?
Or PCM, engine ECU?
The car was not used for about half a year. There was no problems before that.
 
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