P0B7E

HYBRID / BATTERY CONTROL: HYBRID BATTERY SYSTEM: P0B3D-123,P0B42-123,P0B47-123,P0B4C-123,P0B51-123,P0B56-123,P0B5B-123,P0B60-123,P0B65-123,P0B6A-123,P0B6F-123,P0B74-123,P0B79-123,P0B7E-123,P0B83-123,P0B88-123,P308A-123: Hybrid Battery Voltage Sensor "A" Circuit Low
P308A-123 - Hybrid Battery Voltage Sensor All Circuits Low

DESCRIPTION

- Refer to the description for DTC P0A80-123 P0A80.





HINT
- Values smaller than 2.0 V may not be shown in the Data List because a fail-safe value is substituted.
- Hybrid battery voltage sensor in the DTC titles refers to the battery smart unit.

MONITOR DESCRIPTION

If the battery smart unit detects voltage drop in a battery module, 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.

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.

NOTICE:
After the power switch is turned off, the display and navigation module display (HDD navigation system) records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 60 seconds before disconnecting the cable from the negative (-) battery terminal.

PROCEDURE

1. CHECK DTC OUTPUT (DTC P0AFC-123 IS OUTPUT) P0A7F

B -- GO TO DTC CHART
A -- Continue to next step.

2. CHECK CONNECTOR CONNECTION CONDITION

CAUTION:
Be sure to wear insulated gloves.

(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 power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

(c) Remove the battery cover Removal.

(d) Check the connections of the z25 connector of the battery smart unit.





Text in Illustration





OK:

The connectors are connected securely and there are no contact problems.

(e) Install the battery cover Installation.

(f) Connect the cable to the negative (-) battery terminal.

NG -- CONNECT SECURELY
OK -- Continue to next step.

3. REPLACE BATTERY SMART UNIT

(a) Replace the battery smart unit Components.

NEXT -- Continue to next step.

4. CLEAR DTC (HV)

(a) Connect the Techstream4 to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Clear the DTCs and freeze frame data Hybrid Battery System.

(e) Perform a road test to charge and discharge the HV battery assembly.

(f) Disconnect the Techstream4 from the DLC3.

NEXT -- Continue to next step.

5. RECONFIRM DTC OUTPUT (HV)

(a) Connect the Techstream4 to the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Read output DTCs Hybrid Battery System.

Result





HINT
Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set. Use the Techstream4 to clear the DTCs Hybrid Battery System.

(e) Disconnect the Techstream4 to the DLC3.

B -- REPLACE HV BATTERY ASSEMBLY Components

A -- RETURNS TO NORMAL OPERATION