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24 - 14
CONTROLS - FRONT
A/C PRESSURE TRANSDUCER (Continued)
Voltage
0.0
0.150 to 0.450
0.451 to 4.519
4.520 to 4.850
5.0
REMOVAL
WARNING: REFER TO THE APPLICABLE WARN-
INGS AND CAUTIONS FOR THIS SYSTEM BEFORE
PERFORMING THE FOLLOWING OPERATION (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
WARNING) and (Refer to 24 - HEATING & AIR CON-
DITIONING/PLUMBING - CAUTION).
(1) Recover the refrigerant from the refrigerant
system (Refer to 24 - HEATING & AIR CONDITION-
ING/PLUMBING - STANDARD PROCEDURE).
(2) Disconnect and isolate the battery negative
cable.
(3) Disconnect the wire harness connector from the
A/C pressure transducer (Fig. 9).
(4) Using an open end wrench, remove the A/C
pressure transducer from the fitting on the liquid
line.
(5) Remove the O-ring seal from the A/C pressure
transducer and discard.
INSTALLATION
(1) Lubricate a new O-ring seal with clean refrig-
erant oil and install it on the A/C pressure trans-
ducer.
(2) Using an open end wrench, install and tighten
the A/C pressure transducer into the fitting on the
liquid line. Tighten the transducer to 12 N·m (106 in.
lbs.).
(3) Reconnect the wire harness connector to the
transducer.
(4) Reconnect the battery negative cable.
(5) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE).
(6) Charge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE).
A/C PRESSURE TRANSDUCER VOLTAGE
1. No transducer supply voltage from ATC control module.
2. Shorted transducer circuit.
3. Faulty transducer.
1. Ambient temperature below 10° C (50° F).
2. Low refrigerant system pressure.
1. Normal refrigerant system pressure.
1. High refrigerant system pressure.
1. Open transducer circuit.
2. Faulty transducer.
Possible Cause
Fig. 9 A/C Pressure Transducer
1 - WIRE HARNESS CONNECTOR
2 - A/C PRESSURE TRANSDUCER
3 - O-RING SEAL
4 - LIQUID LINE FITTING
AIR OUTLET TEMPERATURE
SENSOR
DESCRIPTION
The air outlet temperature sensor is a two-wire
temperature sensing element that detects the tem-
perature of the air coming out of the heater housing
unit. The sensor is attached to heater housing unit
directly behind the ATC heater-A/C control panel.
The thermistor will change resistance as the temper-
ature changes.
The air outlet temperature sensor cannot be
adjusted or repaired, and if faulty or damaged, it
must be replaced.
VA
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