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 > Engine > Data List 

   Tester Display
   IGR

   Result

   Result	Proceed to
   The value of IGR is ON	A
   None of the above conditions are met	B

Result: 

A 

CHECK FOR INTERMITTENT PROBLEMS 

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

Result: 

B 

See step  2

1. Disconnect the ECM connector.
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to ECM)

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A83-22 (IGR) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM 

Refer to REMOVAL [11/2023 - ]

Result: 

NG 

See step  3

1. Disconnect the power distribution box assembly connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   8E-16 - A83-22 (IGR)	Always	Below 1 Ω
   8E-16 or A83-22 (IGR) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the power distribution box assembly connector.
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

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE POWER DISTRIBUTION BOX ASSEMBLY 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR