ibus should measure 12V when quiet, around 8V when active

Subject: ibus should measure 12V when quiet, around 8V when active
Author: kiwijochen : member since June, 2006 : 1561 posts
Posted on: 2007-12-04 03:40:59

No volts means you have no ibus connection. Trace the ibus wire and find where it is disconnected

The Navigation A/V Forum | Message Thread:

DSP amp problem- Car was retrofited with NAV couple mos ago but - bmw635 2007-12-02 06:37:51 (194 views)
- DONE! It's doesn't pay to be perfect! Undo all the components in the trunk, pull - bmw635 2007-12-07 18:06:10 (148 views)
- Update:I disconnected the TV & harness from NAV system so it's just OE NAV - bmw635 2007-12-05 14:53:35 (123 views)
  - Here's a link to an online WDS for the X5... (url) - Brian 2007-12-05 15:41:15 (168 views)
    - OK, I jumped I-bus from TV conn to DSP amp and I have CD sound but no tape, TV, - bmw635 2007-12-05 18:07:07 (149 views)
      - Right now, all of your problems are related to the wiring... (url) - Brian 2007-12-05 19:09:47 (146 views)
        
        Looks like I am in for a long haul to hunt for the I-bus. All the connector are (url) - bmw635 2007-12-05 23:15:04 (130 views)
        
        Protocol cannot be screwed up - kiwijochen 2007-12-06 00:03:13 (120 views)
        
        What type of controls does the LCM or MID have on the I-bus,NAV, etc...? - bmw635 2007-12-06 12:30:32 (125 views)
        
        Far too many to mention! - kiwijochen 2007-12-07 21:26:16 (116 views)
        
        KIwijohcen, (nt) - bmw635 2007-12-06 11:54:31 (123 views)
- First step is to code properly - kiwijochen 2007-12-02 16:12:14 (165 views)
  - Another wierd thing today: the DSP disappeared from the screen altogether, like - bmw635 2007-12-02 19:50:59 (128 views)
    - It sounds like your DSP amp lost power, ground, or I-Bus connection - Brian 2007-12-02 20:23:40 (149 views)
      - There's 4 connection on DSP amp: large speaker, I-bus, and 2 others on top - bmw635 2007-12-02 20:45:53 (131 views)
        
        DSP Amp Pinouts - Brian 2007-12-02 21:35:29 (407 views)
        
        Update- I have power on pin 8 &15 of 15pin conn. There's nothing on I-bus/pin#5 - bmw635 2007-12-03 22:23:33 (141 views)
        
        ibus should measure 12V when quiet, around 8V when active - kiwijochen 2007-12-04 03:40:59 (121 views)
        
        Any suggestion where? Is the a schematic that I can look at? - bmw635 2007-12-04 13:44:33 (120 views)
        
        Thanks, I'll check this out tomorrow afternoon. (nt) - bmw635 2007-12-03 00:06:20 (128 views)
    - Correction: 'spend' to 'spent'. (nt) - bmw635 2007-12-02 20:01:02 (112 views)

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