Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000026Z8H
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for TMC Made, and Gasoline Model, with Automatic Air Conditioning System): P007011; Ambient Temperature Sensor Circuit Short to Ground; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]

DTC

P007011

Ambient Temperature Sensor Circuit Short to Ground

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 (5 V) 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

P007011

Ambient Temperature Sensor Circuit Short to Ground

Diagnosis Condition:

  • Ignition switch ON

Malfunction:

  • Short (GND) in ambient temperature sensor circuit

Detection Time:

  • Continuously for 4 seconds or more
  • Ambient temp. sensor (Thermistor assembly)
  • Harness or connector
  • Air conditioning amplifier assembly

Memorized

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING GTS (AMBIENT TEMPERATURE SENSOR)

(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

Ambient temp. sensor (thermistor assembly)

-327.68 to 327.67°C

Actual ambient temperature displayed

Ambient temp. sensor (thermistor assembly) circuit malfunction

Body Electrical > Air Conditioner > Data List

Tester Display

Ambient Temperature Sensor

OK:

The display is as specified in the normal condition column.

OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

2.

INSPECT AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)

except G16E-GTS: Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV [06/2018 -        ]; HEATING / AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR (except G16E-GTS): INSPECTION

for G16E-GTS: Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; HEATING / AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR (for G16E-GTS): INSPECTION

NG

REPLACE AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)

except G16E-GTS: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV [09/2022 -        ]; HEATING / AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR (except G16E-GTS): REMOVAL

for G16E-GTS: Click here 2023 - 2025 MY GR Corolla [09/2022 -        ]; HEATING / AIR CONDITIONING: AMBIENT TEMPERATURE SENSOR (for G16E-GTS): REMOVAL

OK

3.

CHECK HARNESS AND CONNECTOR (AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY) - AIR CONDITIONING AMPLIFIER 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

A3-2 or I48-14 (SG-2) - Other terminals and body ground

Always

10 kΩ or higher
OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR