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 |
|
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 |
|
| 2. | CHECK OPERATION |
(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 |
Operation not Accepted Even If Air Conditioning Switch is Operated
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...
Blower Motor does not Operate
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:
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the front shock absorber assembly removal/installation are shown below...
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Removal
REMOVAL CAUTION / NOTICE / HINT HINT: When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used. Learning completes when vehicle is driven Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Lane tracing assist system Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more...
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Break-In Period
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.