P1606 VVEL issue/code

mendoza_ms

December 4, 2017

I got a hold of a local Z shop, Precision Z in Canoga, CA. They've never worked on a P1606 issue before and are willing to help, but I decided to give it one more try before I hand it over to the pros. They stated that if I want to assume that the replacement VVEL module works, then there has to be a problem with the signal to/from the module, which means I should check out the IPDM (basically the Z's engine bay fuse box). If I find a blown fuse, then that would be the underlying root case. Otherwise, I should try to perform the VVEL learning procedure (which I totally neglected to do).

What I plan to do next is the following diagnostic procedures in the "370Z Bible" (aka Nissan 370Z Factory Service Manual):

- ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MODULE) (EC-18)
- ACCELERATOR PEDAL RELEASED POSITION LEARNING (EC-19)
- THROTTLE VALVE CLOSED POSITION LEARNING (EC-20)
- IDLE AIR VOLUME LEARNING (EC-20)