Toyota Corolla Cross: A/C Switch Indicator does not Turn On
DESCRIPTION
If none of the switch indicators on the air conditioning control assembly illuminate, the following factors may be the cause.
|
Symptom | Factor |
|
A/C switch indicator does not illuminate |
- Air conditioning amplifier assembly malfunction
- Air conditioning control assembly malfunction
- A/C switch malfunction
- A/C switch indicator malfunction (including when indicator turned off without switch operation)
- Servo motor initialization (incomplete)
- Mechanical locking of damper and damper link
- Refrigerant pressure is extremely low
- Low detected ambient temperature (including thermistor assembly malfunction)
|
PROCEDURE
| 1. |
CHECK MALFUNCTION STATUS |
(a) Check the malfunction status of switch indicators on the air conditioning control assembly.
| Result | Proceed to |
|
Indicators are not always illuminated |
A |
| Indicators are not illuminated only immediately after starting the engine |
B |
| B |
.gif) | GO TO INITIALIZATION |
|
A |
.gif) | |
(a) Read the Data List according to the display on the GTS.
Body Electrical > Air Conditioner > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note |
|
Ambient Temperature Sensor |
Thermistor assembly | Min.: -327.68°C (-557.82°F)
Max.: 327.67°C (-621.81°F) |
Actual ambient temperature displayed |
Ambient temperature sensor (thermistor assembly) circuit malfunction |
Body Electrical > Air Conditioner > Data List
|
Tester Display |
| Ambient Temperature Sensor |
OK:
The value displayed is 0°C (32°F) or higher.
| OK |
| INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET |
| NG |
| GO TO OTHER DIAGNOSIS PROCEDURE (Ambient Temperature Display System) |
READ NEXT:
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Symptom Factor
Cooling effectiveness is poor
Cooling respon
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Symptom Factor
Air conditioning syste
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
SEE MORE:
DRIVING ADJUSTMENT
CAUTION / NOTICE / HINT
CAUTION:
Radiofrequency radiation exposure information:
This equipment complies with FCC radiation exposure limits set forth
for an uncontrolled environment.
This equipment should be kept with minimum distance of 20 cm (7.87 in.)
between t
On-vehicle InspectionON-VEHICLE INSPECTION CAUTION / NOTICE / HINT
CAUTION: Do not remove the reserve tank cap and air release valve while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
PROCEDURE 1. INSPECT FOR
