Help with code

josh green · Post by **josh green** » Fri Feb 17, 2006 5:54 pm

My car is displaying this through kpo.

Error code 39-1
DTC P0600

The description was lost due to a dead battery. My setup is a 95 cvici cx, Hybrid-Racing harness. I beleive thats all the electrical stuff that I have that isnt stock and was needed for the swap. When the car is idling, it seems to skip and studder and some times it just stops runnning and then starts back up as though it was cut off for the slightest secone and then cut back on. If anyone could tell me what it is I would greatly appreciate it.

chunky · Post by **chunky** » Sun Feb 19, 2006 11:21 am

Josh, this was the code description you told me via phone yesterday.

39-1 p0600 serial comm link malfunction.

also, josh has a k20a2 swap in an eg chassis. Everything on the car was working properly for quite some time and the swap is basically stock - it just has i/h/e.

Post by **Spunkster** » Mon Feb 20, 2006 10:46 am

That error is because it is an engine swap. You must disable the multiplexor under MISC. This has nothing to do with how the car is running.

Garrett_si · Post by **Garrett_si** » Thu May 25, 2006 6:35 pm

this week on our K20 the code on the K-pro was active

but no CEL in cluster

actually the CEL is ON and the K-pro show us the VBU code

someone know why?

Post by **Spunkster** » Fri May 26, 2006 9:39 am

Garrett_si wrote:this week on our K20 the code on the K-pro was active

but no CEL in cluster

actually the CEL is ON and the K-pro show us the VBU code

someone know why?

You lost me there. You must give better details. Post datalogs and calibrations.

Garrett_si · Post by **Garrett_si** » Fri May 26, 2006 3:39 pm

Ok last week the K_pro give me a code : VBU High Voltage

but no CEL

this week their is a CEL and K-Pro give me the same VBU High VOltage

I found that the VBU wire on ECU need 12V when ignition is OFF and 0V when ignition is ON

I justed cut the wire on E7 on the ECM

Post by **Hondata** » Fri May 26, 2006 4:26 pm

Stop. You are close to making the classic engine swap wiring mistake. Do not feed VBU / E7 voltage of any kind, otherwise the main relay transistor will burn out.

The ECU uses E7 to ground the main relay, and also gets a current trickle via the main relay coil side, which is the VBU. You must not put voltage down E7 - the only correct wiring solution is to use a main relay. See http://www.hondata.com/techk20wiring.html

Garrett_si · Post by **Garrett_si** » Fri May 26, 2006 4:58 pm

E7 is now cut, so I dont have 12V there, no posibility to burn the transistor