DESCRIPTION
Refer to the description for DTC P0A9B11.
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DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
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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) |
| 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) |
| 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) |
| 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) |
| Comes on | Master Warning Light: Comes on |
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:
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 P0A9B2A), 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:
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P0A9C (INF P0A9B2A), P0AC6 (INF P0AC52A), P0ACB (INF P0ACA2A):
HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
P3065 (INF P306562):
HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
WIRING DIAGRAM
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 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) |
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2. | CHECK INSTALLATION OF TEMPERATURE SENSOR (HYBRID 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.
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(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 |
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3. | CHECK HYBRID BATTERY THERMISTOR (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.
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(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 of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 2). Tester Connection:
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.
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:
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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(g) Reconnect the N21 and y10 battery voltage sensor connectors.
(h) Install the No. 1 hybrid battery exhaust duct.
OK | REPLACE BATTERY VOLTAGE SENSOR |
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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.
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(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) |