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Recommended Posts

2003 cayenne 4.5 v8 non turbo automatic P1299 gateway 
p1316 psm control unit 

p1606 can timeout tcs/edtc

Repaired all wiring splices under carpet  (both sides)

replaced brake light switch 

replaced battery 

cleaned earth’s 

swapped speed sensors from no issue cayenne 

Warnings are

* brake proportioning 

* 4x4 system faulty 

* both digital and analog speedo not working 

still have same problem I’m absolutely stumped 

Edited by Newbiecayenne
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P1606 CAN Timeout, ASR/MSR


Possible fault cause
- No signals in PSM control module


Fault code 1316 PSM control module


Possible causes of fault
- No signal/communication (no signal from PSM control module on CAN drive)
- Faulty (fault value for wheel speed or distance pulses)


It looks like you have no CAN communication to the PSM controller.

Check the wiring at the controller and the connectors.

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