DTC P2533-14: Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open [12/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE USING GTS (IGR)
- 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
Reault 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 [12/2023 - ]
Result:
B
See step 2
- Read the Data List.
- CHECK TERMINAL VOLTAGE (IGR VOLTAGE)
- Measure the voltage according to the value(s) in the table below.
*a Component with harness connected
(Hybrid Vehicle Control ECU Assembly)- - Standard Voltage
Tester Connection Switch Condition Specified Condition Result B88-8 (IGR) - D117-1 (E1) Ignition switch ON 11 to 14 V V Result
Proceed to OK NG
Result:
OK
REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to REMOVAL [12/2023 - ]
Result:
NG
See step 3
- Measure the voltage according to the value(s) in the table below.
- CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - HYBRID VEHICLE CONTROL ECU ASSEMBLY)
Pre-procedure1
- Disconnect the hybrid vehicle control ECU assembly 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 D63-36 - B88-8 (IGR) Always Below 1 Ω Ω Standard Resistance (Check for Short)
Tester Connection Condition Specified Condition Result D63-36 or B88-8 (IGR) - Body ground and other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- Connect the power distribution box assembly connector.
- Connect the hybrid vehicle control ECU assembly connector.
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BODY GROUND)
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 D62-36 - Body ground Always Below 1 Ω Ω D63-41 - Body ground Always Below 1 Ω Ω Result
Proceed to OK NG
Post-procedure1
- Connect the power distribution box assembly connectors.
Result:
OK
REPLACE POWER DISTRIBUTION BOX ASSEMBLY. Refer to REMOVAL [09/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR