DESCRIPTION
The inlet air temperature sensor (battery) is mounted on the HV battery. The resistance of the sensor varies in accordance with changes in the intake air temperature. The characteristics of the inlet air temperature sensor are the same as those of the battery temperature sensors (Click here ). The battery voltage sensor uses signals from the inlet air temperature sensor to control the air volume of the battery cooling blower assembly.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P0AAC11 | Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Ground | The inlet air temperature sensor output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic) |
| Does not come on | Master Warning Light: Comes on |
P0AAC15 | Hybrid/EV Battery Air Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open | The inlet air temperature sensor output voltage is higher than the standard value (short to +B or open) and the detected temperature is lower than the specified value. (1 trip detection logic) |
| Does not come on | Master Warning Light: Comes on |
HINT:
After checking for the above DTCs, check the hybrid system Data List item "Hybrid Battery Cooling Fan Intake Air Temperature 1" using the Techstream.
Displayed Temperature | Malfunction |
---|---|
-45°C (-49°F) or less | Open or +B short circuit |
95°C (203°F) or more | GND short |
DTC No. | Data List |
---|---|
P0AAC11 | Hybrid Battery Cooling Fan Intake Air Temperature 1 |
P0AAC15 |
CONFIRMATION DRIVING PATTERN
HINT:
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
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HINT:
WIRING DIAGRAM
Refer to the wiring diagram for DTC P0A9B2A.
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CAUTION / NOTICE / HINT
CAUTION:
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HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a | Without waiting for 10 minutes |
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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PROCEDURE
1. | CHECK DTC OUTPUT (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes Result | Proceed to |
---|---|
P0AFC00, P0AFC96 or P308A12 is not output. | A |
P0AFC00, P0AFC96 or P308A12 is output. | B |
(e) Turn the power switch off.
B | GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
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2. | CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTION CONDITION) |
CAUTION:
Be sure to wear insulated gloves.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the No. 1 hybrid battery exhaust duct.
Click here
(c) Check the connections of the y10 battery voltage sensor connector. Click here OK: The connector is connected securely and there are no contact problems. | |
(d) Install the No. 1 hybrid battery exhaust duct.
NG | CONNECT SECURELY |
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3. | CHECK INSTALLATION OF INLET AIR TEMPERATURE SENSOR |
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the upper HV battery cover sub-assembly.
Click here
(c) Visually check the installation condition of the inlet air temperature sensor.
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(d) Install the upper HV battery cover sub-assembly.
B | REPLACE HYBRID BATTERY THERMISTOR |
C | INSTALL PARTS CORRECTLY |
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4. | CHECK HYBRID BATTERY THERMISTOR (INLET AIR TEMPERATURE SENSOR) |
CAUTION:
Be sure to wear insulated gloves.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the No. 1 hybrid battery exhaust duct.
Click here
(c) Disconnect the y10 battery voltage sensor connector.
NOTICE:
Before disconnecting the connector, check that it is not loose or disconnected.
(d) Measure the resistance according to the value(s) in the table below. Standard Resistance:
NOTICE: When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder. |
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(e) Disconnect the N21 battery voltage sensor connector.
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
y10-1 (TC0) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-1 (TC0) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-7 (GC0) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-7 (GC0) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-4 (TB0) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-4 (TB0) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-10 (GB0) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-10 (GB0) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-3 (TB1) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-3 (TB1) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-9 (GB1) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-9 (GB1) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-2 (TB2) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-2 (TB2) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
y10-8 (GB2) - N21-1 (IGCT) | Power switch off | 10 kΩ or higher |
y10-8 (GB2) - N21-5 (GND) | Power switch off | 10 kΩ or higher |
(g) Reconnect the y10 and N21 battery voltage sensor connectors.
(h) Install the No. 1 hybrid battery exhaust duct.
OK | REPLACE BATTERY VOLTAGE SENSOR |
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5. | CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR AND INLET AIR TEMPERATURE SENSOR) |
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.
(b) Remove the upper HV battery cover sub-assembly.
Click here
(c) Check the wire harnesses and connectors of the battery temperature sensors and inlet air temperature sensor for abnormalities by sight and touch.
Specified Condition:
There are no open or short circuits in the wire harnesses and connectors. There are no short circuits to other wire harnesses.
(d) Install the upper HV battery cover sub-assembly.
OK | REPLACE HYBRID BATTERY THERMISTOR |
NG | REPAIR HARNESS OR CONNECTOR (INLET AIR TEMPERATURE SENSOR) |