P0AC7
HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0A9D-123, P0A9E-123, P0AC7-123, P0AC8-123, P0ACC-123, P0ACD-123: Hybrid Battery Temperature Sensor "A" Circuit Low
P0ACD-123 - Hybrid Battery Temperature Sensor "C" Circuit High
DESCRIPTION
- Refer to the description for DTC P0A9C-123 P0A9C.
HINT
After confirming that a DTC is output, use the Techstream to check "Temp of BATT TB 1 to 3" in the hybrid vehicle control system ECU data list.
MONITOR DESCRIPTION
If the temperature indicated by the battery temperature sensor is lower than the standard level (open), or is higher than the standard level (short), the battery smart unit interprets this as a sensor malfunction. If the battery smart unit detects that HV battery temperature is out of the normal range or its value is abnormal, the power management control ECU (HV CPU) will illuminate the MIL and set 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 power switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
4. Turn the power switch off.
5. Turn the power switch on (READY) and turn the Techstream on.
6. Perform the universal trip.
7. Enter the following menus: Powertrain / HV / Trouble Codes.
8. Check that permanent DTCs are cleared.
HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
Refer to the wiring diagram for DTC P0A9C-123 P0A9C.
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 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 Hybrid Battery System.
HINT
At least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
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 Service Precautions.
PROCEDURE
1. CHECK DTC OUTPUT (HV) P0A7F
B -- GO TO DTC CHART
A -- Continue to next step.
2. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Temp of Batt TB 1 to 3.
HINT
Compare the temperature of the 3 battery temperature sensors to determine the sensor with the malfunction (Temp of Batt TB1 to TB3).
NEXT -- Continue to next step.
3. CHECK CONNECTOR CONNECTION CONDITION
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 information because this may cause a malfunction.
(b) Check the connections of the z10 connector of the battery smart unit.
OK:
The connectors are connected securely and there are no contact problems.
NG -- CONNECT SECURELY
OK -- Continue to next step.
4. CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR) P0A9C
NG -- CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR)
OK -- REPLACE BATTERY SMART UNIT Components
5. CHECK HARNESS AND CONNECTOR (BATTERY TEMPERATURE SENSOR) P0A9C
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HV BATTERY Components