The thermistor assembly is installed in front of the cooler condenser assembly to detect the ambient temperature, which is used to control the air conditioning system. This sensor is connected to the combination meter assembly and detects fluctuations in the ambient temperature. This data is used for controlling the cabin temperature. The resistance of the thermistor assembly changes in accordance with the ambient temperature. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.
The air conditioning amplifier assembly applies a voltage to the thermistor assembly and reads voltage changes due to changes in the resistance of the thermistor assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| P007011 | Ambient Temperature Sensor Circuit Short to Ground | Diagnosis Condition:
Ignition switch ON Malfunction Status:
Short in ambient temperature sensor circuit Detection Time:
Continuously for 4 seconds or more |
·
Thermistor assembly ·
Harness or connector ·
Air conditioning amplifier assembly |
Memorized |
| *1 | Thermistor Assembly |
| *2 | Air Conditioning Amplifier Assembly |
Disconnect the thermistor assembly connector.
According to the display on the GTS, read the Data List.
| Tester Display |
|---|
| Ambient Temperature Sensor |
| GTS Display | Specified Condition |
|---|---|
| Ambient Temperature Sensor | -327.68°C (-557.82°F) |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Pre-procedure1
Disconnect the G47 air conditioning amplifier assembly connector.
Disconnect the A19 thermistor assembly connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G47-1 (TAM) or A19-2 (+) - Other terminals and body ground | Always | 10 kΩ or higher |
| G47-14 (SG-2) or A19-1 (-) - Other terminals and body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG