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
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 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:
DESCRIPTION Refer to DTC P032511. Click here
HINT: When DTC P032515 is stored, the ECM enters fail-safe mode. During fail-safe mode, the ignition timing is delayed to its maximum retardation. Fail-safe mode continues until the ignition switch is turned off.
DTC No. Detection Item
DT
DESCRIPTION If a ECM that is incompatible with the immobiliser function is installed, the ECM will store this DTC.
DTC No. Detection Item
DTC Detection Condition Trouble Area
Note B279C95
Engine Immobiliser System Incorrect Assembly
A ECM that is incompatible with
