Chrysler Conquest 1988 Service Manual page 939

AIR CONDITIONING
- Troubleshooting
24-63
DIAGNOSIS DISPLAY PATTERN 4
Yes
4
Connect thermistor
connector. Does approx.
1.25V appear between A-19
terminal and ground of
control unit at a room
temperature of 25°C (77"F)?
I
Yes
No ,T! (-T-r
I
Inadequate control unit
I
I Check and correct connector
I
I
connector contact or
1
> contact or replace control
faulty control unit
unit
DIAGNOSIS DISPLAY PATTERN 5
Yes
Connect blend air damper
potentiometer connector.
Does approx. 2.5V appear
between A-15 terminal and
ground of control unit when
potentiometer is set to
MAX COOL position?
No
Open or shorted harness
Correct harness
between blend air damper
potentiometer and control
> unit
>
Yes
1 , Inadequate control unit
connector contact or faulty
control unit
i