RM38N0EC _58 Vehicle Interior _111841 HEATING / AIR CONDITIONING _0499788 AIR CONDITIONING SYSTEM(for Gasoline Model) C

HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Gasoline Model) 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	DTC Output from	Priority
P007015	Ambient Temperature Sensor Circuit Short to Battery or Open	Diagnosis Condition: Ignition switch ON Malfunction: Open or short (+B) 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	Air Conditioner	A

DTC Detection Condition Combination Table
		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	Ignition switch ON	○	○
Malfunction	Open in ambient temperature sensor circuit	○	-
Malfunction	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

0.177,1.781 0.76,1.948 0.583,0.167 10 false A20 0.177,1.958 3.281,2.25 3.104,0.292 10 false Ambient Temp. Sensor (Thermistor Assembly) 4.406,0.792 4.74,0.99 0.333,0.198 10 false E45 4.635,1.781 6.948,2.042 2.313,0.26 10 false Air Conditioning Amplifier Assembly 2.146,0.688 2.323,0.906 0.177,0.219 10 false 2 2.146,1.167 2.323,1.385 0.177,0.219 10 false 1 4.458,1.063 4.698,1.281 0.24,0.219 10 false 14 4.49,0.573 4.677,0.76 0.188,0.188 10 false 1 4.802,0.781 5.24,0.969 0.438,0.188 10 false TAM 4.802,1.26 5.208,1.448 0.406,0.188 10 false SG-2 4.406,1.26 4.74,1.458 0.333,0.198 10 false E45

PROCEDURE

1.CHECK AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY) CIRCUIT

Pre-procedure1

1.469,0.229 1.885,0.479 0.417,0.25 0.208,0.198 0.521,0.396 0.313,0.198 10 false *a 1.563,0.281 1.917,0.479 0.354,0.198 10 false A20

*a	Front view of wire harness connector (to Ambient Temp. Sensor (Thermistor Assembly))

Disconnect the A20 ambient temp. sensor (thermistor assembly) connector.

Procedure1

Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A20)Location & Routingewd_type=routing;type=c;code=A20 Click Connector(A20)Engine Compartment>Engine Room Main Wire / Transmission Wire>Thermistor Assemblyewd_type=component;type=c;code=A20;pinno=2
A20-2 - Body ground	Ignition switch ON	0 to 5.5 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(A20)Location & Routingewd_type=routing;type=c;code=A20

Click Connector(A20)Engine Compartment>Engine Room Main Wire / Transmission Wire>Thermistor Assemblyewd_type=component;type=c;code=A20;pinno=2

A20-2 - Body ground

Ignition switch ON

0 to 5.5 V

Result:

Proceed to
OK
NG

Post-procedure1

None

2.CLEAR DTC

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

2.CLEAR DTC

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs: 50002 450

Result:

Proceed to
NEXT

3.CHECK FOR DTC

Pre-procedure1

Turn the ignition switch off.

1.469,0.229 1.885,0.479 0.417,0.25 0.208,0.198 0.521,0.396 0.313,0.198 10 false *a 1.563,0.281 1.917,0.479 0.354,0.198 10 false A20

*a	Front view of wire harness connector (to Ambient Temp. Sensor (Thermistor Assembly))

Disconnect the A20 ambient temp. sensor (thermistor assembly) connector.

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 1.927,0.656 2.385,0.927 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

Connect terminals 1 and 2 of the ambient temp. sensor (thermistor assembly) connector on the wire harness side.

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

Procedure1

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes: 50001 450

Result:

Result	Proceed to
P007011 is output	A
P007015 is output	B

Post-procedure1

None

REPLACE AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AMBIENT TEMPERATURE SENSOR>REMOVAL202111,202203,_58,_111841,_0499802,RM100000001Z09M,202203,202406,_58,_111841,_0499802,RM1000000022L5E,202406,202409,_58,_111841,_0499802,RM100000002MQ31,202409,999999,_58,_111841,_0499802,RM100000002OMTA,

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

Pre-procedure1

Disconnect the A20 ambient temp. sensor (thermistor assembly) connector.

Disconnect the E45 air conditioning amplifier assembly connector.

Procedure1

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A20,E45)Location & Routingewd_type=routing;type=c,c;code=A20,E45 Click Connector(A20)Engine Compartment>Engine Room Main Wire / Transmission Wire>Thermistor Assemblyewd_type=component;type=c;code=A20;pinno=2,1 Click Connector(E45)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Air Conditioning Amplifier Assemblyewd_type=component;type=c;code=E45;pinno=1,14
A20-2 - E45-1 (TAM)	Always	Below 1 Ω
A20-1 - E45-14 (SG-2)	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(A20,E45)Location & Routingewd_type=routing;type=c,c;code=A20,E45

Click Connector(A20)Engine Compartment>Engine Room Main Wire / Transmission Wire>Thermistor Assemblyewd_type=component;type=c;code=A20;pinno=2,1

Click Connector(E45)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Air Conditioning Amplifier Assemblyewd_type=component;type=c;code=E45;pinno=1,14

A20-2 - E45-1 (TAM)

Always

Below 1 Ω

A20-1 - E45-14 (SG-2)

Always

Below 1 Ω

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL202111,999999,_58,_111841,_0499808,RM100000001Z0AA,

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Pre-procedure1

Disconnect the A20 ambient temp. sensor (thermistor assembly) connector.

Disconnect the E45 air conditioning amplifier assembly connector.

Procedure1

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A20,E45)Location & Routingewd_type=routing;type=c,c;code=A20,E45 Click Connector(A20)Engine Compartment>Engine Room Main Wire / Transmission Wire>Thermistor Assemblyewd_type=component;type=c;code=A20;pinno=2 Click Connector(E45)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Air Conditioning Amplifier Assemblyewd_type=component;type=c;code=E45;pinno=1
A20-2 or E45-1 (TAM) - Other terminals and body ground	Always	10 kΩ or higher

Tester Connection

Condition

Specified Condition

Click Location & Routing(A20,E45)Location & Routingewd_type=routing;type=c,c;code=A20,E45

Click Connector(A20)Engine Compartment>Engine Room Main Wire / Transmission Wire>Thermistor Assemblyewd_type=component;type=c;code=A20;pinno=2

Click Connector(E45)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Air Conditioning Amplifier Assemblyewd_type=component;type=c;code=E45;pinno=1

A20-2 or E45-1 (TAM) - Other terminals and body ground

Always

10 kΩ or higher

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL202111,999999,_58,_111841,_0499808,RM100000001Z0AA,

REPAIR OR REPLACE HARNESS OR CONNECTOR