DESCRIPTION
The thermistor assembly is installed in front of the cooler condenser assembly to detect the ambient temperature, which is used to control the automatic air conditioning system. The thermistor assembly detects fluctuations in the ambient temperature and sends it as a signal to the combination meter assembly. This data is used for controlling the cabin temperature. The resistance of the thermistor assembly changes in accordance with the ambient temperature. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases. The combination meter assembly applies voltage (5 V) to the thermistor assembly and detects voltage changes due to changes in the resistance of the thermistor assembly.
The air conditioning amplifier assembly communicates with the combination meter assembly via CAN communication.
NOTICE:
The thermistor assembly detects the ambient temperature in its vicinity, not the ambient temperature around the vehicle. Depending on factors such as radiant heat from the engine room and the vehicle speed, the ambient temperature detected by the thermistor assembly may differ from the ambient temperature displayed on the multi-information display in the combination meter assembly. For example:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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HINT:
When disconnecting and reconnecting the cable to the auxiliary battery terminal, there is an automatic learning function that completes learning when the respective system is used.
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PROCEDURE
1. | CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Air Conditioner > Trouble CodesNOTICE:
Perform the parked vehicle inspection with the ignition switch to ON. (Do not start the engine.)
Result | Proceed to |
---|---|
P007011 and P007015 is not output | A |
P007011 is output | B |
P007015 is output | C |
B |
![]() | GO TO DTC P007011 |
C |
![]() | GO TO DTC P007015 |
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2. | INSPECT THERMISTOR ASSEMBLY |
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![]() | REPLACE THERMISTOR ASSEMBLY |
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3. | CHECK HARNESS AND CONNECTOR (THERMISTOR ASSEMBLY - COMBINATION METER ASSEMBLY) |
NOTICE:
During the parked vehicle inspection, perform the inspection with the ignition switch off (do not start the engine and electric motor).
(a) Disconnect the H6 combination meter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
A52-1 (SO-) - H6-11 (TX1-) | Always | Below 1 Ω |
A52-2 (SO+) - H6-16 (TX1+) | Always | Below 1 Ω |
A52-1 (SO-) or H6-11 (TX1-) - Other terminals and body ground | Always | 10 kΩ or higher |
A52-2 (SO+) or H6-16 (TX1+) - Other terminals and body ground | Always | 10 kΩ or higher |
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![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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4. | CHECK VALUE OF AMBIENT TEMPERATURE DETECTED BY THERMISTOR ASSEMBLY |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for at least 90 seconds.
HINT:
The air conditioning amplifier assembly reads and memorizes the thermistor assembly (ambient temperature sensor) detection value (THO) from before the ignition switch was turned off for 1 hour after turning the ignition switch off. Therefore, it is necessary to switch off the air conditioning amplifier assembly internal power source and clear the stored values from before the ignition switch was turned off.
(b) Connect the cable to the negative (-) auxiliary battery terminal.
(c) Measure and make a note of the ambient temperature near the thermistor assembly using a thermometer.
NOTICE:
(d) Make a note of the ambient temperature displayed on the multi-information display in the combination meter assembly.
(e) Compare the value of the ambient temperature measured by the thermometer and the thermistor assembly.
OK:
The value of the ambient temperature measured by the thermometer and the thermistor assembly are almost the same.
OK |
![]() | END |
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![]() | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.