On-Vehicle Inspection [09/2023 - ]: Procedure

Pre-procedure1

• Disconnect the vacuum hose from the vacuum pump assembly.

  HINT: 

  See step  3

• Connect the hose of the vacuum gauge to the vacuum pump assembly.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a	Vacuum Gauge
  *b	Plug

• Put the engine in Inspection Mode (Maintenance Mode).

  Powertrain > Hybrid Control > Utility 

  Tester Display
  Inspection Mode

• Start the engine and warm it up for more than 2 minutes.

• With the engine idling, check the vacuum of the vacuum pump assembly.

  Standard Pressure

  Item	Specified Condition	Result
  Vacuum of the vacuum pump assembly	More than 86.7 kPa More than 650 mmHG More than 25.6 in.Hg	kPa mmHG in.Hg

  If the pressure is less than the standard, disassemble and inspect the vacuum pump assembly. If necessary, replace the vacuum pump assembly.

  HINT: 

  Refer to DISASSEMBLY [09/2023 - ] 

  HINT: 

  Always perform this operation check procedure after replacing or servicing the vacuum pump assembly.

Post-procedure1

• Remove the vacuum gauge from the vacuum pump assembly.
• Connect the vacuum hose to the vacuum pump assembly.