| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM1000000026Z46 |
| Model Year Start: 2023 | Model: Corolla | Prod Date Range: [09/2022 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): P007015; Ambient Temperature Sensor Circuit Short to Battery or Open; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] | ||
|
DTC |
P007015 |
Ambient Temperature Sensor Circuit Short to Battery or Open |
DESCRIPTION
The ambient temp. sensor (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 air conditioning amplifier assembly and detects fluctuations in the ambient temperature. This data is used for controlling the cabin temperature. The sensor sends a signal to the air conditioning amplifier assembly. The resistance of the ambient temp. sensor (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 voltage to the ambient temp. sensor (thermistor assembly) and reads voltage changes due to changes in the resistance of the ambient temp. sensor (thermistor assembly).
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Memory |
|---|---|---|---|---|
|
P007015 |
Ambient Temperature Sensor Circuit Short to Battery or Open |
Diagnosis Condition:
Malfunction:
Detection Time:
|
|
Memorized |
DTC Detection Condition Combination Table
|
Vehicle Condition |
|||
|---|---|---|---|
|
Pattern 1 |
Pattern 2 |
||
|
Diagnosis Condition |
Ignition switch ON |
○ |
○ |
|
Malfunction |
Open in ambient temperature sensor circuit |
○ |
- |
|
Short (+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
|
1. |
CHECK AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY) CIRCUIT |
|
(a) Disconnect the A3 ambient temp. sensor (thermistor assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A3-1 - Body ground |
Ignition switch ON |
0 to 5.5 V |
| NG |
|
|
|
2. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Air Conditioner > Clear DTCs
|
|
3. |
CHECK FOR DTC |
(a) Turn the ignition switch off.
|
(b) Disconnect the A3 ambient temp. sensor (thermistor assembly) connector. |
|
|
(c) Connect terminals 1 and 2 of the ambient temp. sensor (thermistor assembly) connector on the wire harness side. |
|
(d) Turn the ignition switch to ON and wait for 4 seconds or more.
(e) Check for DTCs.
Body Electrical > Air Conditioner > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
P007011 is output |
A |
|
P007015 is output |
B |
| A |
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)) |
(a) Disconnect the A3 ambient temp. sensor (thermistor assembly) 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 |
|---|---|---|
|
A3-1 - I48-1 (TAM) |
Always |
Below 1 Ω |
|
A3-2 - I48-14 (SG-2) |
Always |
Below 1 Ω |
| OK |
|
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY
|
![2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; HEATING / AIR CONDITIONING: AIR CONDITIONING AMPLIFIER: REMOVAL](/t3Portal/stylegraphics/info.gif)
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)) |
(a) Disconnect the A3 ambient temp. sensor (thermistor assembly) 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 |
|---|---|---|
|
A3-1 or I48-1 (TAM) - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|