HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Gasoline Model) P007015 Ambient Temperature Sensor Circuit Short to Battery or Open
DESCRIPTION
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 |
|---|---|---|---|---|
| P007015 | Ambient Temperature Sensor Circuit Short to Battery or Open | Diagnosis Condition:
Ignition switch ON Malfunction Status:
Open or short to +B in ambient temperature sensor circuit Detection Time:
Continuously for 4 seconds or more |
·
Thermistor assembly ·
Harness or connector ·
Air conditioning amplifier assembly |
Memorized |
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | Ignition switch ON | ○ | ○ |
| Malfunction | Open in ambient temperature sensor circuit | ○ | - |
| Short to +B in ambient temperature sensor circuit | - | ○ | |
| Detection Time | Continuously for 4 seconds or more | Continuously for 4 seconds or more | |
| Trip Count | 1 trip | 1 trip | |
- HINT:
-
If the conditions of either of these patterns are detected, a DTC will be stored
WIRING DIAGRAM
PROCEDURE
Pre-procedure1
Disconnect the A19 thermistor assembly connector.
Procedure1
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition A19-2 (+) - Body ground Ignition switch ON 0 to 5.5 V
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
Pre-procedure1
Disconnect the A19 thermistor assembly connector.
Connect terminals 1 and 2 of the thermistor assembly connector on the wire harness side.
| *1 | Thermistor Assembly | *2 | Air Conditioning Amplifier Assembly |
| *a | Front view of wire harness connector
(to thermistor assembly) |
- | - |
Procedure1
According to the display on the GTS, read the Data List.
- Body Electrical > Air Conditioner > Data List
-
Tester Display Ambient Temperature Sensor - 50003 450 101
- OK:
GTS Display Specified Condition Ambient Temperature Sensor 327.67°C (621.81°F)
- Result:
Proceed to OK NG
Post-procedure1
None
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.
- Standard Resistance:
Tester Connection Condition Specified Condition G47-1 (TAM) - A19-2 (+) Always Below 1 Ω G47-14 (SG-2) - A19-1 (-) Always Below 1 Ω
- Result:
Proceed to OK NG
Post-procedure1
None
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.
- Standard Resistance:
Tester Connection Condition Specified Condition G47-1 (TAM) or A19-2 (+) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG