1997 Jetta ignition switch broke?

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pj - 30 Jan 2007 04:22 GMT

I have a 1997 Jetta and the radio stopped working. (I installed
another after market radio and it doesnt work either) It appears that
the ignition switch is not turning the radio on. Is this possible?
How can I bypass this swich? How can I check the ignition switch on
this car? Does the OBDII system have a code to check this? Thanks.

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Jim Behning - 30 Jan 2007 13:00 GMT

> I have a 1997 Jetta and the radio stopped working. (I installed
> another after market radio and it doesnt work either) It appears that
> the ignition switch is not turning the radio on. Is this possible?
> How can I bypass this swich? How can I check the ignition switch on
> this car? Does the OBDII system have a code to check this? Thanks.

Get out your voltmeter. Check for power when ignition switch is on. go
to fuse block to inspect radio fuse.

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pj - 31 Jan 2007 01:32 GMT

On Jan 30, 5:00 am, Jim Behning
<jimbehn...@doesthisstoppork.mindspring.com> wrote:

> > I have a 1997Jettaand the radio stopped working. (I installed
> > another after market radio and it doesnt work either) It appears that
[quoted text clipped - 4 lines]
> Get out your voltmeter. Check for power whenignitionswitchis on. go
> to fuse block to inspect radio fuse.

Hi Jim,
Fuse is good.
On the black connector I have voltage at the radio connector pin 7
(battery positive 12v on the meter)
no voltage at pin 4 not sure what voltage this should be? (ignition
switch -s-)
no voltage at pin 6 not sure what voltage should be (radio
illumination)
Thanks.

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dave AKA vwdoc1 - 31 Jan 2007 03:20 GMT

When one of my ign switches in my '91 Passat was going bad, some components
were not functioning. This included the power windows, heater blower AND
radio. New dealer switch = no more problems!
It could be a wire in your case or a relay. I had also found a bad wiring
job going to my aftermarket radio while I changing my Passat's heater core.

later,
dave
(One out of many daves)

> On Jan 30, 5:00 am, Jim Behning
> <jimbehn...@doesthisstoppork.mindspring.com> wrote:
[quoted text clipped - 16 lines]
> illumination)
> Thanks.

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samstone@aol.com - 31 Jan 2007 08:52 GMT

Radios need to have two supplies of 12 volts and usually three
1. Keep alive power - this 12v keeps the clock and stations programed
2. B+ - this 12v powers up the rest of the radio when you
turn the key on
3. illumination - this 12v is supplied to the radio when the park/headlights
are on ( lights it up nicely at night )
The radio needs the first two voltages to work and both are supplied from TWO
different fuses. So when you say the fuse is good you're really only checked
half.

>On Jan 30, 5:00 am, Jim Behning
><jimbehn...@doesthisstoppork.mindspring.com> wrote:
[quoted text clipped - 16 lines]
>illumination)
>Thanks.

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samstone@aol.com - 31 Jan 2007 09:08 GMT

>Radios need to have two supplies of 12 volts and usually three
>1. Keep alive power - this 12v keeps the clock and stations programed
[quoted text clipped - 3 lines]
> are on ( lights it up nicely at night )
>The radio needs the first two voltages to work and both are supplied from TWO

one fuse for each 12v supply

>different fuses. So when you say the fuse is good you're really only checked
>half.
[quoted text clipped - 19 lines]
>>illumination)
>>Thanks.

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