| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001EKK3 |
| Model Year Start: 2019 | Model: RAV4 HV | Prod Date Range: [11/2018 - 08/2020] |
| Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): P0A9B11,...,P0ACA15; Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground; 2019 - 2020 MY RAV4 HV [11/2018 - 08/2020] | ||
|
DTC |
P0A9B11 |
Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground |
|
DTC |
P0A9B15 |
Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open |
|
DTC |
P0AC511 |
Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground |
|
DTC |
P0AC515 |
Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open |
|
DTC |
P0ACA11 |
Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground |
|
DTC |
P0ACA15 |
Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open |
DESCRIPTION
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 voltage sensor uses the battery temperature sensors to detect the HV battery temperature, and sends the detected value to the hybrid vehicle control ECU assembly. Based on the results of this detection, the hybrid vehicle control ECU assembly controls the blower fan. (The blower fan starts when the 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 |
HINT:
Use the reference table above to determine which battery temperature sensor each DTC corresponds to. For example, sensor A in the DTC title column is battery temperature sensor 0. This sensor is displayed as Hybrid Battery Temperature 1 in the Data List.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Warning Indicate |
|---|---|---|---|---|---|
|
P0A9B11 |
Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Ground |
The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P0A9B15 |
Hybrid/EV Battery Temperature Sensor "A" Circuit Short to Auxiliary Battery or Open |
The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to +B or open) and the detected temperature is lower than the specified value. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P0AC511 |
Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Ground |
The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P0AC515 |
Hybrid/EV Battery Temperature Sensor "B" Circuit Short to Auxiliary Battery or Open |
The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to +B or open) and the detected temperature is lower than the specified value. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P0ACA11 |
Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Ground |
The battery temperature sensor is malfunctioning, its output voltage is lower than the specified value (short circuit) and the detected temperature is higher than the specified value. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
|
P0ACA15 |
Hybrid/EV Battery Temperature Sensor "C" Circuit Short to Auxiliary Battery or Open |
The battery temperature sensor is malfunctioning, its output voltage is higher than the specified value (short to +B or open) and the detected temperature is lower than the specified value. (1 trip detection logic) |
|
Comes on |
Master Warning: Comes on |
Related Data List
|
DTC No. |
Data List |
|---|---|
|
P0A9B11 |
Hybrid Battery Temperature 1 to 3 |
|
P0A9B15 |
|
|
P0AC511 |
|
|
P0AC515 |
|
|
P0ACA11 |
|
|
P0ACA15 |
HINT:
-
After checking for the above DTCs, check the hybrid system Data List item "Hybrid Battery Temperature" using the Techstream.
Temperature Displayed
Malfunction
Below -45°C (-49°F)
Open or +B short circuit
95°C (203°F) or more
GND short circuit
- If the vehicle is left as is for 24 hours, the value of "Hybrid Battery Temperature" will be almost the same as the ambient temperature.
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
![2019 - 2020 MY RAV4 HV [11/2018 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): UTILITY](/t3Portal/stylegraphics/info.gif)
- 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, perform driving pattern again.
WIRING DIAGRAM
Refer to the wiring diagram for DTC P0A9B2A.
Click here
CAUTION / NOTICE / HINT
CAUTION:
-
Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
- Inspecting the high-voltage system
- Disconnecting the low voltage connector of the inverter with converter assembly
- Disconnecting the low voltage connector of the HV battery
-
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
-
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
-
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
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.
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 also output. |
B |
(e) Turn the power switch off.
| B |
|
GO TO DTC CHART (HYBRID CONTROL SYSTEM)
|
|
|
2. |
READ VALUE USING TECHSTREAM (HYBRID BATTERY TEMPERATURE) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Temperature 1 to 3.
(d) Read the Data List.
Powertrain > Hybrid Control > Data List
|
Tester Display |
Measurement Item |
Range |
Reference Value |
Diagnostic Note |
|---|---|---|---|---|
|
Hybrid Battery Temperature 1 |
HV battery temperature sensor output. |
-50 to 205.9°C (-58 to 402.6°F) |
Same as ambient temperature (left as is for 24 hours) |
|
|
Hybrid Battery Temperature 2 |
HV battery temperature sensor output. |
-50 to 205.9°C (-58 to 402.6°F) |
Same as ambient temperature (left as is for 24 hours) |
|
|
Hybrid Battery Temperature 3 |
HV battery temperature sensor output. |
-50 to 205.9°C (-58 to 402.6°F) |
Same as ambient temperature (left as is for 24 hours) |
|
Powertrain > Hybrid Control > Data List
|
Tester Display |
|---|
|
Hybrid Battery Temperature 1 |
|
Hybrid Battery Temperature 2 |
|
Hybrid Battery Temperature 3 |
HINT:
A malfunctioning sensor (battery temperature sensor 0, 1 or 2) can be determined by comparing the output temperature of the 3 battery temperature sensors.
(e) Turn the power switch off.
|
|
3. |
CHECK CONNECTOR CONNECTION CONDITION (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) Check the connections of the z19 battery voltage sensor connector. Click here
OK: The connector is connected securely and there are no contact problems. Result:
|
|
(d) Install the No. 1 hybrid battery exhaust duct.
| NG |
|
CONNECT SECURELY |
|
|
4. |
CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR) |
Click here
| OK |
|
REPLACE BATTERY VOLTAGE SENSOR
|
|
|
5. |
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 sensors 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) |
|
|