DTC P2533-14: Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open [10/2022 - ]: Procedure

1. Read the Data List.

   Powertrain > Hybrid Control > Data List 

   Tester Display
   IGR

   Standard

   GTS Display	Switch Condition	Specified Condition
   IGR	Ignition switch ON	ON

   Result

   Result	Proceed to
   The value of IGR is ON	A
   The value of IGR is OFF	B

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [10/2022 - ] 

Result: 

B 

See step  2

Pre-procedure1

• None.

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

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *a

  Component with harness connected (Hybrid Vehicle Control ECU)

  -

  -

  Standard Voltage

  Tester Connection	Switch Condition	Specified Condition	Result
  A21-8 (IGR) - C59-1 (E1)	Ignition switch ON	11 to 14 V	V

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Turn the ignition switch off.

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [10/2022 - ] 

Result: 

NG 

See step  3

Pre-procedure1

• Disconnect the hybrid vehicle control ECU connector.
• Disconnect the power distribution box assembly connector.

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

  Standard Resistance (Check for Open)

  Tester Connection	Condition	Specified Condition	Result
  C90-36 - A21-8 (IGR)	Always	Below 1 Ω	Ω

  Standard Resistance (Check for Short)

  Tester Connection	Condition	Specified Condition	Result
  C90-36 or A21-8 (IGR) - Other terminals and body ground	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the power distribution box assembly connector.
• Reconnect the hybrid vehicle control ECU connector.

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

Pre-procedure1

• Disconnect the power distribution box assembly connectors.

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

  Standard Resistance

  Tester Connection	Condition	Specified Condition	Result
  C89-36 - Body ground	Always	Below 1 Ω	Ω
  C90-41 - Body ground	Always	Below 1 Ω	Ω

  Result

  Proceed to
  OK
  NG

Post-procedure1

• Reconnect the power distribution box assembly connectors.

Result: 

OK 

REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to  REMOVAL [10/2022 - 08/2023]  , or refer to  REMOVAL [08/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR