DTC P2533-14: Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open [12/2021 - ]: 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  HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ] 

Result: 

B 

See step  2

Pre-procedure1

1. Disconnect the ECM connector.
2. Turn the ignition switch to ON.

   Procedure1

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   B70-7 (IGR) - Body ground	Ignition switch ON	11 to 14 V

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [12/2021 - ] 

Result: 

NG 

See step  3

Refer to ON-VEHICLE INSPECTION [12/2021 - ]

Result

Result: 

NG 

REPLACE IGR NO. 3 RELAY 

Result: 

OK 

See step  4

Pre-procedure1

1. Remove the IGR NO. 3 relay from the No. 1 engine room relay block and junction block assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	No. 1 Engine Room Relay Block and Junction Block Assembly
   *2	IGR NO. 3 Relay

   Procedure1

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   3 (IGR NO. 3 relay) - Body ground	Always	11 to 14 V

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGR NO. 3 RELAY) 

Result: 

OK 

See step  5

Pre-procedure1

1. Remove the IGR NO. 3 relay from the No. 1 engine room relay block and junction block assembly.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2 (IGR NO. 3 relay) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

   Post-procedure1

3. None

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

Pre-procedure1

1. Remove the IGR NO. 3 relay from the No. 1 engine room relay block and junction block assembly.
2. Disconnect the ECM connector.

   Procedure1

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   5 (IGR NO. 3 relay) - B70-7 (IGR)	Always	Below 1 Ω
   5 (IGR NO. 3 relay) or B70-7 (IGR) - Body ground and other terminals	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

OK 

GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (FOR START FUNCTION). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR