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) |
- Hybrid battery thermistor
- Battery voltage sensor
- Wire harness or connector
| 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) |
- Hybrid battery thermistor
- Battery voltage sensor
- Wire harness or connector
| 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 | Related Data List
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. Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 2 minutes or more.
- Turn the power switch on (IG) and turn the Techstream on.
- With power switch on (IG) and wait for 5 seconds or more.
- Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
- Check the DTC judgment result.
HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
WIRING DIAGRAM Refer to the wiring diagram for DTC P0A9B2A.
Click here CAUTION / NOTICE / HINT
CAUTION:
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. Click here 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) |
A |
| |
2. |
CHECK CONNECTOR CONNECTION CONDITION (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) Check the connections of the y6 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 |
OK |
| |
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.
Result | Proceed to |
The inlet air temperature sensor is installed in the correct location and its claws are engaged securely. |
A | The claws of the inlet air temperature sensor are damaged. |
B | The inlet air temperature sensor is not installed correctly, but its claws are not damaged. |
C | | |
(d) Install the upper HV battery cover sub-assembly.
B |
| REPLACE HYBRID BATTERY THERMISTOR |
C |
| INSTALL PARTS CORRECTLY |
A |
| |
4. |
CHECK HV BATTERY (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 y6 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:
Tester Connection | Condition |
Specified Condition |
y6-1 (TC0) - y6-7 (GC0) |
Power switch off 0 to 10°C (32 to 50°F) |
17.7 to 27.8 kΩ |
y6-1 (TC0) - y6-7 (GC0) |
Power switch off 10 to 20°C (50 to 68°F) |
12.0 to 18.2 kΩ |
y6-1 (TC0) - y6-7 (GC0) |
Power switch off 20 to 30°C (68 to 86°F) |
8.22 to 12.2 kΩ |
y6-1 (TC0) - y6-7 (GC0) |
Power switch off 30 to 40°C (86 to 104°F) |
5.74 to 8.41 kΩ |
y6-1 (TC0) - y6-7 (GC0) |
Power switch off 40 to 50°C (104 to 122°F) |
4.09 to 5.91 kΩ | NOTICE:
When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder. |
|
*a | Rear view of wire harness connector
(to Battery Voltage Sensor) | | |
(e) Disconnect the K17 battery voltage sensor connector. (f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
y6-1 (TC0) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-1 (TC0) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-7 (GC0) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-7 (GC0) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-4 (TB0) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-4 (TB0) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-10 (GB0) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-10 (GB0) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-3 (TB1) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-3 (TB1) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-9 (GB1) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-9 (GB1) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-2 (TB2) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-2 (TB2) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
y6-8 (GB2) - K17-1 (IGCT) |
Power switch off | 10 kΩ or higher |
y6-8 (GB2) - K17-5 (GND) |
Power switch off | 10 kΩ or higher |
(g) Reconnect the y6 and K17 battery voltage sensor connectors. (h) Install the No. 1 hybrid battery exhaust duct.
OK |
| REPLACE BATTERY VOLTAGE SENSOR |
NG |
| |
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) | |