DESCRIPTION Refer to the description for DTC P0A9B11.
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DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate |
P0A9B2A | Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range |
The performance of battery temperature sensor 0 is abnormal and its output is stuck.
(2 trip detection logic) |
- Battery voltage sensor
- Hybrid battery thermistor
- Wire harness or connector
| Comes on |
Master Warning Light: Comes on |
P0AC52A | Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range |
The performance of battery temperature sensor 1 is abnormal and its output is stuck.
(2 trip detection logic) |
- Battery voltage sensor
- Hybrid battery thermistor
- Wire harness or connector
| Comes on |
Master Warning Light: Comes on |
P0ACA2A | Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range |
The performance of battery temperature sensor 2 is abnormal and its output is stuck.
(2 trip detection logic) |
- Battery voltage sensor
- Hybrid battery thermistor
- Wire harness or connector
| Comes on |
Master Warning Light: Comes on |
P306562 | Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure |
The
performance of any battery temperature sensor is abnormal, and the
difference in output between it and other battery temperature sensors is
excessively large. (1 trip detection logic) |
- Battery voltage sensor
- Hybrid battery thermistor
- Wire harness or connector
| Comes on |
Master Warning Light: Comes on | Related Data List
DTC No. | Data List |
P0A9B2A | Hybrid Battery Temperature 1 to 3 |
P0AC52A | P0ACA2A |
P306562 | HINT: If
the vehicle as is left as is for 24 hours, the value of "Hybrid Battery
Temperature" will be almost the same as the ambient temperature. The following items can be helpful when performing repairs: Data List
- Vehicle Speed
- Ambient Temperature
MONITOR DESCRIPTION The
battery temperature sensors are provided at 3 locations on the bottom
of the HV battery. The resistance of the thermistor, which is built into
each battery temperature sensor, varies in accordance with changes in
the HV battery temperature. The lower the battery temperature, the
higher the thermistor resistance. Conversely, the higher the
temperature, the lower the resistance. The battery voltage sensor uses
the battery temperature sensor to detect the HV battery temperature, and
sends the detected value to the hybrid vehicle control ECU. Based on
the results of this detection, the hybrid vehicle control ECU controls
the blower fan. (The blower fan starts when the HV battery temperature
rises above a predetermined level.) MONITOR STRATEGY
Related DTCs | P0A9C (INF P0A9B2A), P0AC6 (INF P0AC52A), P0ACB (INF P0ACA2A): Battery temperature sensor malfunction (stuck)
P3065 (INF P306562): Battery temperature sensor malfunction (deviation) |
Required sensors/components | Battery temperature sensor |
Frequency of operation | Continuous |
Duration | TMC's intellectual property |
MIL operation | P0A9C (INF P0A982A), P0AC6 (INF P0AC52A), P0ACB (INF P0ACA2A): 2 driving cycles
P3065 (INF P306562): 1 driving cycle |
Sequence of operation | None | TYPICAL ENABLING CONDITIONS
The monitor will run whenever the following DTCs are not stored |
TMC's intellectual property | Other conditions belong to TMC's intellectual property |
- | TYPICAL MALFUNCTION THRESHOLDS
TMC's intellectual property | - | COMPONENT OPERATING RANGE
Battery voltage sensor | DTC P0A9C (INF P0A9B2A) is not detected
DTC P0AC6 (INF P0AC52A) is not detected DTC P0ACB (INF P0ACA2A) is not detected
DTC P3065 (INF P306562) is not detected | 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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- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
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P0A9C (INF P0A9B2A), P0AC6 (INF P0AC52A), P0ACB (INF P0ACA2A):
- 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.
- Drive the vehicle for approximately 10 minutes according to the freeze
frame data items "Vehicle Speed", "Accelerator Position", "Hybrid
Battery Temperature 1 to 3" and "Hybrid Battery Current" when ambient
temperature is -10°C (14°F) or higher.[*1]
HINT:
- 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 the normal judgment procedure again.
P3065 (INF P306562):
- 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 10 seconds or more when the ambient temperature is -10°C (14°F) or higher.[*1]
HINT:
- 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 the normal judgment procedure again.
WIRING DIAGRAM
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 or P0AFC96 is not output. |
A | P0AFC00 or P0AFC96 is output. |
B | (e) Turn the power switch off.
B |
| GO TO DTC CHART (HYBRID CONTROL SYSTEM) |
A |
| |
2. |
CHECK INSTALLATION OF TEMPERATURE SENSOR (HYBRID BATTERY TEMPERATURE) |
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 relevant battery temperature sensor.
*1 | Battery Temperature Sensor 0 |
*2 | Battery Temperature Sensor 1 |
*3 | Battery Temperature Sensor 2 |
- | - |
Standard Condition: Each
battery temperature sensor is installed in the correct location with
the correct orientation and its claws are engaged securely.
Result | Proceed to |
Each
battery temperature sensor is installed in the correct location with
the correct orientation and its claws are engaged securely. |
A | Claws are damaged. |
B | Any of battery temperature sensors are not installed correctly, but claws are not damaged. |
C | (d) Install the upper HV battery cover sub-assembly.
B |
| REPLACE HYBRID BATTERY THERMISTOR |
C |
| INSTALL PARTS CORRECTLY |
A |
| |
3. |
CHECK HV BATTERY (BATTERY 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 of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 2).
Tester Connection:
Tester Connection | Battery Temperature Sensor |
y6-4 (TB0) - y6-10 (GB0) |
0 | y6-3 (TB1) - y6-9 (GB1) |
1 | y6-2 (TB2) - y6-8 (GB2) |
2 | Standard Resistance:
Thermistor Temperature |
Condition | Specified Condition |
0 to 10°C (32 to 50°F) |
Power switch off |
17.7 to 27.8 kΩ |
10 to 20°C (50 to 68°F) |
Power switch off |
12.0 to 18.2 kΩ |
20 to 30°C (68 to 86°F) |
Power switch off |
8.22 to 12.2 kΩ |
30 to 40°C (86 to 104°F) |
Power switch off |
5.74 to 8.41 kΩ |
40 to 50°C (104 to 122°F) |
Power switch off |
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. NOTICE:
Before disconnecting the connector, check that it is not loose or disconnected.
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
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 |
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 | 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) | | |
(g) Reconnect the K17 and y6 battery voltage sensor connectors. (h) Install the No. 1 hybrid battery exhaust duct.
OK |
| REPLACE BATTERY VOLTAGE SENSOR |
NG |
| |
4. |
CHECK HARNESS AND CONNECTOR (BATTERY 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 harness and connectors of the battery temperature sensor for abnormalities by sight and touch.
Specified Condition: There are no open or short circuits in the wire harness 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 (BATTERY TEMPERATURE SENSOR) | |