RM3660EC _58 Vehicle Interior _080733 HEATING / AIR CONDITIONING _0598792 AIR CONDITIONING SYSTEM(for HV Model (8ZR-FXE)) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for HV Model (8ZR-FXE))  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 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

E546057E19
0.177,1.781 0.76,1.948 0.583,0.167 10 false A3 0.177,1.958 3.281,2.25 3.104,0.292 10 false Ambient Temp. Sensor (Thermistor Assembly) 4.438,0.792 4.771,0.99 0.333,0.198 10 false I49 4.635,1.792 6.948,2.052 2.313,0.26 10 false Air Conditioning Amplifier Assembly 2.146,0.677 2.365,0.917 0.219,0.24 10 false 1 2.146,1.167 2.323,1.385 0.177,0.219 10 false 2 4.448,1.063 4.688,1.281 0.24,0.219 10 false 24 4.49,0.573 4.677,0.76 0.188,0.188 10 false 3 4.802,0.792 5.24,0.979 0.438,0.188 10 false TAM 4.802,1.26 5.208,1.448 0.406,0.188 10 false SG-2 4.438,1.26 4.771,1.458 0.333,0.198 10 false I49

PROCEDURE

1.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Turn the ignition switch off.


b.
E478812C27
0.917,1.771 1.281,2 0.365,0.229 10 false *1 2.667,1.771 3.031,2 0.365,0.229 10 false *2 1.938,0.646 2.396,0.917 0.458,0.271 10 false TAM 1.896,1 2.417,1.24 0.521,0.24 10 false SG-2
*1 Ambient Temp. Sensor (Thermistor Assembly)
*2 Air Conditioning Amplifier Assembly


Disconnect the ambient temp. sensor (thermistor assembly) connector.


c.

Turn the ignition switch to ON and wait for 4 seconds or more.


d.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 450
Result:
Result Proceed to
P007015 is output A
P007011 is output B




A

REPLACE AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AMBIENT TEMPERATURE SENSOR>REMOVAL


B

3.CHECK HARNESS AND CONNECTOR (AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY) - AIR CONDITIONING AMPLIFIER ASSEMBLY)
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 I49 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 I49-3 (TAM) - Other terminals and body ground Always 10 kΩ or higher
A3-2 or I49-24 (SG-2) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR