Hello, I have a '98 manual Boxster and last weekend I was working on replacing the front speakers and adding a Bluetooth module to the HU. I started and ran the car several times during the day but when I was done installing the HU and speakers and tried to start the car, the car wouldn't turn over. I did the following...
- Checked the relevant fuses (B8, C1, C2, and C4)
- Jumped the clutch safety switch
- Jumped the starter relay in the rear trunk
In the end, I tested the battery and it was lower than 12V, so I pulled the battery and put it on the charger. I just reinstalled the battery and the car still won't turnover. I can hear the fuel pump turn on. I hooked up Durametrics and it had a number of codes associated with the battery being disconnected. I cleared those codes and the only code that remains is P1602: Supply voltage. Open circuit.
My battery is only 2 years old - so I would be surprised if it is a bad battery. I did a search in this forum but didn't come up with anything useful. Any recommendations on how to debug? I have had this Boxster for a couple of years now and it has been super reliable once I replaced the ignition switch and fixed the micro switches and door latches.
I guess I should add that I had the HU disconnected and the front trunk amp disconnected while working on the stereo - I really doubt that is my issue with the car not starting but figured I should mention this - as I know the HU is connected to the alarm system I believe.
elav 
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