I wasnt going to start a new thread but im having an issue, that i just can NOT figure out...
I have no power to my interior (E92). No gauges, Gauges, Guage Cluster screen, and there's a constant "relay clicking" noise coming from the JBE area every 5 seconds or so. And currently this will kill the battery overnight, if i do not disconnect the battery after trying to diagnose the car for the day.
The battery is fairly new, was working perfectly before this, and has been voltage and load tested to be sure.
However, usually when i have an issue with a car, i dont know the cause. In this case i accidentally caused the problem
I was doing a CCC to CIC retrofit, i thought the battery was disconnected, but it was not. i was changing the CCC CID power connector to the newer style CIC power connector. i had the pins of the wires pulled from my old CID connector and the wires were able to touch each other for a few second, when i pulled them closer to push the pins into the new CIC CID Power Connector, before i was able to finally separate the wires from each other..
Now immediately after this happened, (wires touching together), the windshield wipers came on by themselves on full speed, and i could not control them with the steering wheel stalk, so i quickly found the wiper relay behind the glove box, in the fuse box and pulled the wiper relay. That stopped the wipers from going full speed on their own, whenever the battery was connected, key fob in/out & ignition on/off, had no effect.
Now im able to start the engine, but i have no idea whats going on with it bc i have a full non-working gauge cluster.. No RPM, Oil Temp, Check Engine Light, nothing. the whole HVAC controller is dead as well and does nothing.
i tried connectiong to the car to see what codes it might have and whatever i do, I CANNOT connect to my car anymore with INPA or Ista/D..
So far ive checked every single fuse in the interior fuse box, i checked that all the battery connections were good, and i checked and i do have +12v under the hood at the jump start block and i do have power to the fuse box.
I also tried to eleiminate the IBS as an issue so i disconnected the IBS data lead to the dme and the +12v connector. Checked the positive battery post, fuse block located on-top of the battery (Red plastic "Box" power distru-box with fuse-able links on top of the battery).
After all this, i figured maybe i ruined my JBE or Fuse Box, so i found a part-out car with basically the same specs as mine and swapped out the entire fuse box and the JBE bolted to it.. (My car is a 09/2006 Build Date car, so it has the early style Fuse Box which uses a direct stud style connection for the main power lead and is therefore not part of the Recall, most other E90/E92 335i's fall under that recall and almost have a similar issue that i have. But i have verified i have voltage at my fuses and the Main Power Connector to the JBE/JBBE/FUSE BOX.
Im beginning to believe that the K-can bus wires, for the CID power plug, touched the +12v/-12v power wires. Did i short out the Kcan bus and thats why i cant communicate with the car?
What does work:
Key-Fob Unlock Button will turn on interior lights, but not activate power locks
Power Windows, but only from the DS switch (LHD Car)
Sunroof opens normally
Dome and Map Lights
The old CCC HU when plugged in, i press the power button, and i get static from the FM radio being on..
So it seems the Audio System works fine. When CCC HU is out, i see the Red Light come on for the Fiber-Loop
I havent plugged in any of the new CIC parts, bc im afraid they could be damaged.
So no screen is installed right now to see what possible errors it will bring up (I can do this if someone feels like it will help) The CCC HU, CCC/CIC CID, Idrive Knob, and HVAC panel are disconnected to rule things out, no chages.
CID power connector still has power, no fuses blew.... (HOW IS THIS?)
The headlights work fine, including the interior lighting when headlights are on, button backlighting, etc
The Start Button does work and does change the BATTERY & IGNITION Black Dots in INPA
Engine starts, but seems to be in a limp mode
Noteable things that dont work:
PS Window Switch
Central Locking Button
Power Locks via key fob
Hazards/Turn Signal Stalk
HVAC
Gauge Cluster
Where do i start to diagnose this? Ive been looking into this for a month now. No one has ever seem to have the same issue as me. I also cant find any information on troubleshooting the K-can Bus. My car is pre -03/2007, so no D-Can, as far as i know at least.
I recently picked up a Bentley Manual, but havent had a chance to look thru it yet.
After doing some research, it seems like i have a short in the CANBUS somewhere or there is an error with the CANBUS system, or a module connected to the CANBUS shorted out internally or just went bad bc of the voltage spike...
any suggestions would be greatly appreciated, because im not extremely familiar with this side of the car, but i am good with electronics and if anyone has anything i can test with a multimeter that would be great!
Thanks!
I have no power to my interior (E92). No gauges, Gauges, Guage Cluster screen, and there's a constant "relay clicking" noise coming from the JBE area every 5 seconds or so. And currently this will kill the battery overnight, if i do not disconnect the battery after trying to diagnose the car for the day.
The battery is fairly new, was working perfectly before this, and has been voltage and load tested to be sure.
However, usually when i have an issue with a car, i dont know the cause. In this case i accidentally caused the problem
I was doing a CCC to CIC retrofit, i thought the battery was disconnected, but it was not. i was changing the CCC CID power connector to the newer style CIC power connector. i had the pins of the wires pulled from my old CID connector and the wires were able to touch each other for a few second, when i pulled them closer to push the pins into the new CIC CID Power Connector, before i was able to finally separate the wires from each other..
Now immediately after this happened, (wires touching together), the windshield wipers came on by themselves on full speed, and i could not control them with the steering wheel stalk, so i quickly found the wiper relay behind the glove box, in the fuse box and pulled the wiper relay. That stopped the wipers from going full speed on their own, whenever the battery was connected, key fob in/out & ignition on/off, had no effect.
Now im able to start the engine, but i have no idea whats going on with it bc i have a full non-working gauge cluster.. No RPM, Oil Temp, Check Engine Light, nothing. the whole HVAC controller is dead as well and does nothing.
i tried connectiong to the car to see what codes it might have and whatever i do, I CANNOT connect to my car anymore with INPA or Ista/D..
So far ive checked every single fuse in the interior fuse box, i checked that all the battery connections were good, and i checked and i do have +12v under the hood at the jump start block and i do have power to the fuse box.
I also tried to eleiminate the IBS as an issue so i disconnected the IBS data lead to the dme and the +12v connector. Checked the positive battery post, fuse block located on-top of the battery (Red plastic "Box" power distru-box with fuse-able links on top of the battery).
After all this, i figured maybe i ruined my JBE or Fuse Box, so i found a part-out car with basically the same specs as mine and swapped out the entire fuse box and the JBE bolted to it.. (My car is a 09/2006 Build Date car, so it has the early style Fuse Box which uses a direct stud style connection for the main power lead and is therefore not part of the Recall, most other E90/E92 335i's fall under that recall and almost have a similar issue that i have. But i have verified i have voltage at my fuses and the Main Power Connector to the JBE/JBBE/FUSE BOX.
Im beginning to believe that the K-can bus wires, for the CID power plug, touched the +12v/-12v power wires. Did i short out the Kcan bus and thats why i cant communicate with the car?
What does work:
Key-Fob Unlock Button will turn on interior lights, but not activate power locks
Power Windows, but only from the DS switch (LHD Car)
Sunroof opens normally
Dome and Map Lights
The old CCC HU when plugged in, i press the power button, and i get static from the FM radio being on..
So it seems the Audio System works fine. When CCC HU is out, i see the Red Light come on for the Fiber-Loop
I havent plugged in any of the new CIC parts, bc im afraid they could be damaged.
So no screen is installed right now to see what possible errors it will bring up (I can do this if someone feels like it will help) The CCC HU, CCC/CIC CID, Idrive Knob, and HVAC panel are disconnected to rule things out, no chages.
CID power connector still has power, no fuses blew.... (HOW IS THIS?)
The headlights work fine, including the interior lighting when headlights are on, button backlighting, etc
The Start Button does work and does change the BATTERY & IGNITION Black Dots in INPA
Engine starts, but seems to be in a limp mode
Noteable things that dont work:
PS Window Switch
Central Locking Button
Power Locks via key fob
Hazards/Turn Signal Stalk
HVAC
Gauge Cluster
Where do i start to diagnose this? Ive been looking into this for a month now. No one has ever seem to have the same issue as me. I also cant find any information on troubleshooting the K-can Bus. My car is pre -03/2007, so no D-Can, as far as i know at least.
I recently picked up a Bentley Manual, but havent had a chance to look thru it yet.
After doing some research, it seems like i have a short in the CANBUS somewhere or there is an error with the CANBUS system, or a module connected to the CANBUS shorted out internally or just went bad bc of the voltage spike...
any suggestions would be greatly appreciated, because im not extremely familiar with this side of the car, but i am good with electronics and if anyone has anything i can test with a multimeter that would be great!
Thanks!