Re: 93 ZJ AC trouble codes
 

Snow did pass the time by typing:
> BTW Doug, have you had the opportunity to check the values of the oil level
> sensor yet?

I keep on forgetting when I do the oil change. :(

I do know it's a pressure sensor and current is sent through
it to ground and road salt/grime will cause a low-level
warning. That indicates it could report level information but
I doubt it is used that way, just a threashold circuit.

--
DougW

Re: 93 ZJ AC trouble codes
 

Snow did pass the time by typing:
> BTW Doug, have you had the opportunity to check the values of the oil level
> sensor yet?

I keep on forgetting when I do the oil change. :(

I do know it's a pressure sensor and current is sent through
it to ground and road salt/grime will cause a low-level
warning. That indicates it could report level information but
I doubt it is used that way, just a threashold circuit.

--
DougW

Re: 93 ZJ AC trouble codes
 

Snow did pass the time by typing:
> "> Going by memory and a very poorly written service book. :/
>>
>>> 33 --- circuit open --- Ambient Temp sensor
>>
>> Located on the lower radiator support member behind the grill.
>> Connector might have fallen off or gotten corroded.
>> I think it was in the center, but when you take the grill off it
>> is right there.
>
>
> Ok This I found disconnected (assumming this also displays the outside temp.
> on the overhead console), it is now connected.

That's the unit. It feeds both via the data bus.

> Thanks Doug

np

I have the manual ac on mine so taking pictures doesn't help and the
shop manual is not friendly.

--
DougW

Re: 93 ZJ AC trouble codes
 

Snow did pass the time by typing:
> "> Going by memory and a very poorly written service book. :/
>>
>>> 33 --- circuit open --- Ambient Temp sensor
>>
>> Located on the lower radiator support member behind the grill.
>> Connector might have fallen off or gotten corroded.
>> I think it was in the center, but when you take the grill off it
>> is right there.
>
>
> Ok This I found disconnected (assumming this also displays the outside temp.
> on the overhead console), it is now connected.

That's the unit. It feeds both via the data bus.

> Thanks Doug

np

I have the manual ac on mine so taking pictures doesn't help and the
shop manual is not friendly.

--
DougW

Re: 93 ZJ AC trouble codes
 

Snow did pass the time by typing:
> "> Going by memory and a very poorly written service book. :/
>>
>>> 33 --- circuit open --- Ambient Temp sensor
>>
>> Located on the lower radiator support member behind the grill.
>> Connector might have fallen off or gotten corroded.
>> I think it was in the center, but when you take the grill off it
>> is right there.
>
>
> Ok This I found disconnected (assumming this also displays the outside temp.
> on the overhead console), it is now connected.

That's the unit. It feeds both via the data bus.

> Thanks Doug

np

I have the manual ac on mine so taking pictures doesn't help and the
shop manual is not friendly.

--
DougW