P0ACB
P313 HYBRID BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0A9C-123, P0AC6-123, P0ACB-123, P0AE9-123, P0BC3-123, P0C34-123, P0C6E-123, P0C70-123, P0C72-123: Hybrid Battery Temperature Sensor "A" Range / Performance
P0C72-123 - Hybrid Battery Temperature Sensor "E" / "F" Correlation
DESCRIPTION
- The battery temperature sensors are provided at 6 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 smart unit 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 battery cooling blower assembly. (The battery cooling blower assembly starts when HV battery temperature rises above a predetermined level.)
Temperature Sensor Identification Cross Reference Table
HINT
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.
MONITOR DESCRIPTION
If the battery smart unit detects a malfunction in the battery temperature sensor, the hybrid vehicle control ECU illuminates the MIL and stores a DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
4. Turn the ignition switch off.
5. Turn the ignition switch to ON (READY) and turn the Techstream on.
6. Check that the temperature of each temperature sensor is -10°C (14°F) or more.
HINT
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.
7. Turn the ignition switch to ON (READY) and wait for 30 seconds or more.
8. Drive the vehicle on urban roads at a speed of 25 mph (40 km/h) or more for a total of at least 10 minutes. [A]
9. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
10. Check that permanent DTCs are cleared.
11. If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.
HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
INSPECTION PROCEDURE
CAUTION:
- 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.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
HINT
At least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
PROCEDURE
1. CHECK DTC OUTPUT (DTC P0AFC-123 IS OUTPUT) P0A7F
B -- GO TO DTC P0AFC-123 P0AFC-123
A -- Continue to next step.
2. CHECK HV BATTERY ASSEMBLY (BATTERY TEMPERATURE SENSOR)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the ignition switch ON (READY), unless instructed by the repair manual because this may cause a malfunction.
(c) Remove the battery cover Removal.
(d) Disconnect the z18 and z21 connectors from the battery smart unit.
(e) Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 5).
Tester Connection
Standard Resistance
Text in Illustration
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE)
OK -- Continue to next step.
3. CHECK INSTALLATION OF BATTERY TEMPERATURE SENSOR
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the ignition switch ON (READY), unless instructed by the repair manual because this may cause a malfunction.
(c) Remove the battery cover Removal.
(d) Remove the HV battery module which includes the relevant battery temperature sensor.
(e) Visually check the installation condition of the relevant battery temperature sensor.
Text in Illustration
Result
NOTICE:
Do not use a stick or similar object to push on the sensors when inspecting them. Doing so may result in damage to the sensors.
C -- INSTALL PARTS CORRECTLY
B -- REPLACE HV BATTERY ASSEMBLY Removal
A -- REPLACE BATTERY SMART UNIT Removal
4. CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE)
CAUTION:
Be sure to wear insulated gloves and protective goggles.
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Check that the service plug grip is not installed.
NOTICE:
After removing the service plug grip, do not turn the ignition switch ON (READY), unless instructed by the repair manual because this may cause a malfunction.
(c) Remove the battery cover Removal.
(d) Disconnect the z35 and z36 connectors from the No. 2 battery pack wire.
(e) Disconnect the z18 connector from the battery smart unit.
(f) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 BATTERY PACK WIRE)
OK -- REPLACE HV BATTERY ASSEMBLY Removal