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PCM Audio Menu Problem

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I have a new to me '99 cab with the PCM 1. About a month ago I installed a Solisto iPod adapter and replaced the Nav unit with a shelf. Everything looked as expected. Last week I replaced the battery. I entered the code for the radio and the code was accepted but no frequencies show on the audio menu. I cannot set any of the radio frequencies and the CD is not recognized. The rest of the functions like the trip computer and AC page look normal. I have searched numerous forms and found one case with identical symptoms but no responses. I looked in The Essential Companion without much luck and there is nothing in the owner's manual. I have not been able to find a PCM 1 manual in hard copy or online.

Can anybody provide any suggestions? I have a road trip planned in a week and would appreciate any information.


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As to the pcm code issue, My mechanic suggested that I leave the radio on for an hour by turning the key to 1. wait for the screen to show the pcm input code and try again. Will update if this works. if not, will check fuse box to see if the fuse is bad.

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Success. I found a bad fuse - B2 in my case. I also found a link from Typhon

Scroll down toward the bottom of the thread. There is also a fuse on the back of the PCM unit that can cause the same symptoms.


Edited by oscarmyra
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