P0ACC

DTC P0A9C Hybrid Battery Temperature Sensor "A"
DTC P0A9D Hybrid Battery Temperature Sensor "A" Circuit Low
DTC P0A9E Hybrid Battery Temperature Sensor "A" Circuit High
DTC P0AC5 Hybrid Battery Temperature Sensor "B" Circuit
DTC P0AC7 Hybrid Battery Temperature Sensor "B" Circuit Low
DTC P0AC8 Hybrid Battery Temperature Sensor "B" Circuit High
DTC P0ACA Hybrid Battery Temperature Sensor "C"
DTC P0ACC Hybrid Battery Temperature Sensor "C" Circuit Low
DTC P0ACD Hybrid Battery Temperature Sensor "C" Circuit High

DESCRIPTION

DTC Detection Condition:

The battery temperature sensors are provided at 8 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 HV control ECU. Based on the results of this detection, the HV control ECU controls the blower fan. (The blower fan starts when HV battery temperature rises to a predetermined level.)






HINT: After confirming that a DTC is output, use the intelligent tester to check "BATT TEMP1 to 8" in the HV system ECU data list.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

If the temperature indicated by the battery temperature sensor is lower than the standard level (open circuit), or is higher than the standard level (short circuit), the battery smart unit interprets this as a sensor malfunction. If the battery smart unit detects that HV battery temperature is out of normal range, the HV control ECU illuminates the MIL and sets a DTC.

Wiring Diagram:

Step 1-2:

Step 3-5:

Step 5(continued):

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 reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 5 minutes before touching any of the high-voltage connectors or terminals.

HINT: At least 5 minutes is required to discharge the high-voltage capacitor inside the w/ converter inverter assembly.