| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000028CHA |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Gasoline Model with Automatic Air Conditioning System): B14D215; Front Left Solar Sensor Circuit Short to Battery or Open; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] | ||
|
DTC |
B14D215 |
Front Left Solar Sensor Circuit Short to Battery or Open |
DESCRIPTION
The solar sensor (cooler thermistor) is installed on the upper side of the instrument panel. It detects sunlight to control air conditioning control in AUTO mode.
The output voltage from the solar sensor (cooler thermistor) varies in accordance with the amount of sunlight. When the sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases.
The air conditioning amplifier assembly detects changes in the output voltage from the solar sensor (cooler thermistor).
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
|---|---|---|---|---|
|
B14D215 |
Front Left Solar Sensor Circuit Short to Battery or Open |
Diagnosis Condition:
Malfunction:
Detection Time:
|
|
Memorized |
WIRING DIAGRAM
PROCEDURE
|
1. |
READ VALUE USING GTS |
(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 |
|---|---|---|---|---|
|
Front Left Solar Sensor |
Front left side solar sensor (cooler thermistor) |
0 to 6553.5 W/m^2 |
Front left side solar sensor (cooler thermistor) value increases as brightness increases |
Solar sensor (cooler thermistor) circuit malfunction |
Body Electrical > Air Conditioner > Data List
|
Tester Display |
|---|
|
Front Left Solar Sensor |
OK:
The display is as specified in the normal condition column.
| OK |
|
|
|
2. |
INSPECT SOLAR SENSOR (COOLER THERMISTOR) |
Click here
![2020 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - ]; HEATING / AIR CONDITIONING: SOLAR SENSOR: ON-VEHICLE INSPECTION](/t3Portal/stylegraphics/info.gif)
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - SOLAR SENSOR (COOLER THERMISTOR)) |
(a) Disconnect the m5 solar sensor (cooler thermistor) connector.
(b) Disconnect the I48 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
m5-1 - I48-2 (S5-1) |
Always |
Below 1 Ω |
|
m5-2 - I48-9 (TS) |
Always |
Below 1 Ω |
|
m5-1 or I48-2 (S5-1) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
m5-2 or I48-9 (TS) - Other terminals and body ground |
Always |
10 kΩ or higher |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I48-2 (S5-1) - Body ground |
Ignition switch ON |
Below 1 V |
|
I48-9 (TS) - Body ground |
Ignition switch ON |
Below 1 V |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|