DTC P2533-14: Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open [11/2023 - ]: 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

   Proceed to
   OK
   NG

Result: 

OK 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

Result: 

NG 

See step  2

1. 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
   A32-33 (IGR) - H67-15 (E1)	Ignition switch ON	11 to 14 V

2. Turn the ignition switch off.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

See step  3

1. Disconnect the A32 hybrid vehicle control ECU connector.
2. Disconnect the 8B power distribution box assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   8B-25 - A32-33 (IGR)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   8B-25 or A32-33 (IGR) - Other terminals and body ground	Always	10 kΩ or higher

4. Reconnect the 8B power distribution box connector.
5. Reconnect the A32 hybrid vehicle control ECU connector.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the 8B and 8C power distribution box assembly connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   8B-36 - Body ground	Always	Below 1 Ω
   8C-41 - Body ground	Always	Below 1 Ω

3. Reconnect the 8B and 8C power distribution box assembly connectors.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR