HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A9C-123, P0AC6-123, P0ACB-123, P3065-123
| DTC Code | DTC Name |
|---|---|
| P0A9C-123 | Hybrid Battery Temperature Sensor "A" Range / Performance |
| P0AC6-123 | Hybrid Battery Temperature Sensor "B" Range / Performance |
| P0ACB-123 | Hybrid Battery Temperature Sensor "C" Range / Performance |
| P3065-123 | Hybrid Battery Temperature Sensor Range/Performance Stuck "A" |
DESCRIPTION
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The battery temperature sensors are provided at 3 locations 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 smart unit uses the battery temperature sensors to detect the HV battery temperature, and sends the detected value to the power management control ECU. Based on the results of this detection, the power management control ECU controls the blower fan. (The blower fan starts when HV battery temperature rises above a predetermined level.)
Temperature Sensor Identification Cross Reference Table DTC Title Sensor Battery Temperature Sensor Techstream Display A 0 1 B 1 2 C 2 3 Tech Tips
For example, sensor A in the DTC title is battery temperature sensor (No. 0). This sensor is displayed as Temp of Batt TB1 in the Data List.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0A9C P0AC6 P0ACB P3065 |
123 | When the battery temperature sensor performance is abnormal (1 trip detection/2 trip detection) |
|
MONITOR DESCRIPTION
If the battery smart unit detects a malfunction in the HV battery temperature sensor, the power management control ECU illuminates the MIL and set a DTC.
MONITOR STRATEGY
| Related DTCs | P0A9C (INF 123): Battery temperature sensor malfunction (stuck) P0AC6 (INF 123): Battery temperature sensor malfunction (stuck) P0ACB (INF 123): Battery temperature sensor malfunction (stuck) P3065 (INF 123): Battery temperature sensor malfunction (deviation) |
| Required sensors / components | Battery temperature sensor |
| Frequency of operation | Continuous |
| Duration | TMC's intellectual property |
| MIL operation | TMC's intellectual property |
| Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever the following DTCs are not present | TMC's intellectual property |
| Other conditions belong to TMC's intellectual property | - |
TYPICAL MALFUNCTION THRESHOLDS
| TMC's intellectual property | - |
COMPONENT OPERATING RANGE
| Battery smart unit | DTC P0A9C (INF 123) is not detected DTC P0AC6 (INF 123) is not detected DTC P0ACB (INF 123) is not detected DTC P3065 (INF 123) is not detected |
CONFIRMATION DRIVING PATTERN
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Connect the Techstream to the DLC3.
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Turn the power switch on (IG) and turn the Techstream on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
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Turn the power switch off.
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Turn the power switch on (READY) and turn the Techstream on.
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Check that the temperature of each temperature sensor is -10 °C (14 °F) or more.
Tech Tips
If any of temperature sensor values are less than -10 °C (14 °F), raise the temperature to -10 °C (14 °F) or more and then perform the next step.
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Turn the power switch on (READY) and wait for 30 seconds or more.
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Drive the vehicle on urban roads at a speed of 40 km/h (25 mph) or more for a total of at least 10 minutes. [A]
Note
Avoid abrupt acceleration or braking.
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Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
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Check that permanent DTCs are cleared.
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If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.
Tech Tips
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If a permanent DTC is output, the system is malfunctioning.
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If no permanent DTC is output, the system is normal.
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WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION:
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Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
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After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work Click here.
Tech Tips
At least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
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When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.
Note
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
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CHECK DTC OUTPUT (HYBRID CONTROL)
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Connect the Techstream to the DLC3.
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Turn the power switch on (IG).
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Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
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Read output DTCs Click here.
Result Result Proceed to P0AFC-123 is not output. A P0AFC-123 is also output. B -
Turn the power switch off.
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Disconnect the Techstream from the DLC3.
B 
GO TO DTC CHART (P0AFC-123) Click here
A 
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CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR)
CAUTION:
Be sure to wear insulated gloves.
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Check that the service plug grip is not installed.
Note
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.
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Remove the front luggage compartment trim cover Click here.
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Disconnect connectors z8 and N18 from the battery smart unit.
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Text in Illustration *a Rear view of wire harness connector
(to Battery Smart Unit)
Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 2).
Tester Connection Tester Connection Battery Temperature Sensor No. z8-4 (TB0) - z8-10 (GB0) 0 z8-3 (TB1) - z8-9 (GB1) 1 z8-2 (TB2) - z8-8 (GB2) 2 Standard Resistance Thermistor Temperature Switch Condition Specified Condition 0 °C (32 °F) Power switch off 26.7 to 27.8 kΩ 25 °C (77 °F) Power switch off 9.9 to 10.1 kΩ 40 °C (104 °F) Power switch off 5.73 to 5.92 kΩ -
Text in Illustration *a Rear view of wire harness connector
(to Battery Smart Unit)
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Switch Condition Standard Resistance z8-4 (TB0) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-4 (TB0) - N18-6 (GND) Power switch off 10 kΩ or more z8-10 (GB0) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-10 (GB0) - N18-6 (GND) Power switch off 10 kΩ or more z8-3 (TB1) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-3 (TB1) - N18-6 (GND) Power switch off 10 kΩ or more z8-9 (GB1) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-9 (GB1) - N18-6 (GND) Power switch off 10 kΩ or more z8-2 (TB2) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-2 (TB2) - N18-6 (GND) Power switch off 10 kΩ or more z8-8 (GB2) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-8 (GB2) - N18-6 (GND) Power switch off 10 kΩ or more z8-1 (TC0) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-1 (TC0) - N18-6 (GND) Power switch off 10 kΩ or more z8-7 (GC0) - N18-3 (IGCT) Power switch off 10 kΩ or more z8-7 (GC0) - N18-6 (GND) Power switch off 10 kΩ or more -
Connect the battery smart unit connectors.
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Install the front luggage compartment trim cover.
NG 
CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR) Click here
OK 
REPLACE BATTERY SMART UNIT Click here
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CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
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Check that the service plug grip is not installed.
Note
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.
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Remove the front luggage compartment trim cover Click here.
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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. Tech Tips
Because the battery harness is not available as a supply part, if the harness cannot be repaired, replace the HV battery assembly.
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Install the front luggage compartment trim cover.
NG
REPAIR HARNESS OR CONNECTOR
OK
REPLACE HV BATTERY Click here
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