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))  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:

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

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

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.CHECK AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY) CIRCUIT
a.
E555020C01
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 1.594,0.281 1.906,0.479 0.313,0.198 10 false A3
*a Front view of wire harness connector
(to Ambient Temp. Sensor (Thermistor Assembly))


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


Result:
Proceed to
OK
NG




OK

2.CLEAR DTC

NG

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

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

Result:
Proceed to
NEXT



NEXT

3.CHECK FOR DTC
3.CHECK FOR DTC
a.

Turn the ignition switch off.


b.
E555020C01
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 1.594,0.281 1.906,0.479 0.313,0.198 10 false A3
*a Front view of wire harness connector
(to Ambient Temp. Sensor (Thermistor Assembly))


Disconnect the A3 ambient temp. sensor (thermistor assembly) connector.


c.
E478811C16
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.


d.

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


e.

Check for DTCs.

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




A

REPLACE AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY)

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


B

4.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AMBIENT TEMP. SENSOR (THERMISTOR ASSEMBLY))
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 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 - I49-3 (TAM) Always Below 1 Ω
A3-2 - I49-24 (SG-2) Always Below 1 Ω


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

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 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


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