Toyota Yaris: Air Conditioning System / Front Window Fogging
DESCRIPTION
If the windshield frequently fogs up even though the air conditioning system is operating, the following factors may be the cause.
Symptom | Factor |
Windshield frequently fogs up | -
Compressor malfunction
-
Refrigerant volume (low)
-
Cooler expansion valve (opened excessively)
-
No. 1 air conditioning radiator damper servo sub-assembly malfunction
-
Mechanical locking of damper and damper link
|
PROCEDURE
1. | PERFORM REFRIGERANT SHORTAGE CHECK |
(a) Check that the following conditions are met and perform the refrigerant shortage check according to the display on the GTS.
Measurement Condition:
Item | Condition |
A/C switch | On |
Ambient temperature*1 | 0 to 49°C (32 to 120°F) |
Blower speed | HI |
*1: If the ambient temperature is not within the range shown, do not perform this check.
Body Electrical > Air Conditioner > Utility
Tester Display |
Refrigerant Gas Volume Check |
Result | Amount of Refrigerant |
Refrigerant correct | Correct |
Refrigerant shortage | Insufficient |
OK:
"Refrigerant correct" is displayed on the GTS.
NG |
| CHARGE SYSTEM WITH REFRIGERANT |
OK |
| |
(a) Press the front defroster switch on the air conditioning control assembly and check that the air outlet mode changes to DEF mode.
OK:
The air outlet mode changes to DEF mode.
OK |
| INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET |
NG |
| GO TO DTC B14037F |
DESCRIPTION If the air conditioning system cannot be operated using the air conditioning control assembly, the following factors may be the cause. Symptom Factor Air conditioning system cannot be operated using air conditioning control assembly
(With the exception of the switch indicators, no inputs are reflected when other switches operated)
LIN communication malfunction between air conditioning amplifier assembly and air conditioning control assembly
Short to +B or ground in air conditioning amplifier assembly circuit
Air conditioning amplifier assembly malfunction
Air conditioning control assembly malfunction
Harness or connector
WIRING DIAGRAM
CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure...
DESCRIPTION If air does not flow from the front registers after the blower switch on the air conditioning control assembly is operated, the following factors may be the cause...
Other information:
DISASSEMBLY CAUTION / NOTICE / HINT NOTICE:
When removing and installing the combination meter glass, make sure not to touch the display panel.
Do not allow any dirt (fingerprints, grease, etc.) to adhere to the combination meter glass. If the glass is dirty, wipe it clean with a soft cloth...
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. INSTALL REAR SUSPENSION ARM BRACKET (a) Temporarily install the rear suspension arm bracket to the rear trailing arm assembly with the bolt and nut...
Categories
No special break-in is necessary, but a few precautions in the first 600
miles (1,000 km) may add to the performance, economy, and life of
the vehicle.
Do not race the engine.
Do not maintain one constant speed, either slow or fast, for a long
period of time.
Do not drive constantly at full-throttle or high engine rpm for
extended periods of time.
Avoid unnecessary hard stops.
Avoid full-throttle starts.
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