DESCRIPTION These DTCs will
be stored if the difference between the maximum and minimum output of
each battery temperature sensors exceeds a certain amount and if the
output of one battery temperature sensor deviates from that of the other
sensors.
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Warning Indicate |
P0A9B1C | Hybrid/EV Battery Temperature Sensor "A" Voltage Out of Range |
The
performance of battery temperature sensor 0 is abnormal; 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 |
P0AC51C | Hybrid/EV Battery Temperature Sensor "B" Voltage Out of Range |
The
performance of battery temperature sensor 1 is abnormal; 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 |
P0ACA1C | Hybrid/EV Battery Temperature Sensor "C" Voltage Out of Range |
The
performance of battery temperature sensor 2 is abnormal; 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 |
P0A9B1C |
- Hybrid Battery Temperature 1 to 3
| P0AC51C |
P0ACA1C | 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 P0A9B1C), P0AC6 (INF P0AC51C), P0ACB (INF P0ACA1C): Battery temperature sensor malfunction (deviation) |
Required sensors/components | Battery temperature sensor |
Frequency of operation | Continuous |
Duration | TMC's intellectual property |
MIL operation | 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 P0A9B1C) is not detected
DTC P0AC6 (INF P0AC51C) is not detected DTC P0ACB (INF P0ACA1C) 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.
Click here
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" 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 10 seconds or more.[*1]
HINT:
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
- 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 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 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) |
Click here
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 |
B |
| REPLACE HYBRID BATTERY THERMISTOR |
C |
| INSTALL PARTS CORRECTLY |
A |
| |
3. |
CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR) |
Click here
OK |
| REPLACE BATTERY VOLTAGE SENSOR |
NG |
| |
4. |
CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR) |
Click here
OK |
| REPLACE HYBRID BATTERY THERMISTOR |
NG |
| REPAIR HARNESS OR CONNECTOR (BATTERY TEMPERATURE SENSOR) | |