DTC P33B3-00: External BBC Circuit [09/2023 - ]: Procedure

1. Following the display on the GTS, check the Freeze Frame Data and read "State of External BBC" in the Freeze Frame Data when P33B3-00 was output.

   Powertrain > Stop and Start > DTC(P33B3-00) > Freeze Frame Data 

   Tester Display
   State of External BBC

   Result

   Tester Display	Proceed to
   Duty Err	A
   Cycle Err	B
   Low Vol	C
   Overvoltage	D
   Overload	E

Result: 

A 

REPLACE EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

Result: 

B 

REPLACE EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

Result: 

C 

See step  2

Result: 

E 

GO TO BACKUP BOOST CONVERTER CIRCUIT. Refer to  Backup Boost Converter Circuit [09/2023 - ] 

Result: 

D 

See step  2

1. Using the GTS, read the values displayed in the Freeze Frame Data.

   Powertrain > Stop and Start > DTC(P33B3-00) > Freeze Frame Data 

   Tester Display
   Minimum Voltage (Starter Solenoid Engagement)

   Standard

   GTS Display	Specified Condition	Result
   Minimum Voltage (Starter Solenoid Engagement)	7.6 V or higher	V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CHARGE OR REPLACE BATTERY AFTER CHECKING BATTERY STATE. Refer to  ON-VEHICLE INSPECTION [09/2023 - ] 

Result: 

OK 

See step  3

1. Check if the connector of the external backup boost converter (eco run vehicle converter assembly) is connected securely.

   OK

   The connector is securely connected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CONNECT CONNECTOR CORRECTLY 

Result: 

OK 

See step  4

Pre-procedure1

• Disconnect the external backup boost converter (eco run vehicle converter assembly) connector.

• Measure the voltage according to the value(s) in the table below.

  Standard Voltage

  Tester Connection	Condition	Specified Condition	Result
  B6-11 (BIN) - Body ground	Always	9.5 to 14 V	V
  B6-3 (ACC) - Body ground	Ignition switch ACC	9.5 to 14 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

Pre-procedure1

• Disconnect the engine stop and start ECU connector.
• Disconnect the external backup boost converter (eco run vehicle converter assembly) connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  B25-19 (DON2) - B6-1 (DON2)	Always	Below 1 Ω	Ω
  B25-19 (DON2) - Body ground	Always	10 kΩ or higher	kΩ
  B6-1 (DON2) - Body ground	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

Pre-procedure1

• Disconnect the external backup boost converter (eco run vehicle converter assembly) connector.
• Remove the AMP NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.
• Disconnect the power distribution box assembly connector.

• Measure the resistance according to the value(s) in the table below.

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  B6-11 (BIN) - AMP NO. 2 fuse terminal 2	Always	Below 1 Ω	Ω
  B6-3 (ACC) - J48-11	Always	Below 1 Ω	Ω
  B6-11 (BIN) - Body ground	Always	10 kΩ or higher	kΩ
  AMP NO. 2 fuse terminal 2 - Body ground	Always	10 kΩ or higher	kΩ
  B6-3 (ACC) - Body ground	Always	10 kΩ or higher	kΩ
  J48-11 - Body ground	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

OK 

REPLACE EXTERNAL BACKUP BOOST CONVERTER (ECO RUN VEHICLE CONVERTER ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR