Inspection [10/2018 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT HV BATTERY JUNCTION BLOCK ASSEMBLY
- Inspect SMRB:
- Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(HV Battery Junction Block Assembly)- - Standard Resistance
Tester Connection Condition Specified Condition W4-1 (CBI) - Z15-1 (+) Auxiliary battery voltage not applied between terminals N41-1 (SMRB) and N41-3 (GND) 10 kΩ or higher Auxiliary battery voltage applied between terminals N41-1 (SMRB) and N41-3 (GND) Below 1 Ω - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-1 (SMRB) - N41-3 (GND) -40 to 80°C (-40 to 176°F) 20.6 to 40.8 Ω If the result is not as specified, replace the HV battery junction block assembly.
- Measure the resistance according to the value(s) in the table below.
- Inspect SMRG:
- Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(HV Battery Junction Block Assembly)- - Standard Resistance
Tester Connection Condition Specified Condition W3-1 (CEI) - Z17-1 (-) Auxiliary battery voltage not applied between terminals N41-4 (SMRG) and N41-3 (GND) 10 kΩ or higher Auxiliary battery voltage applied between terminals N41-4 (SMRG) and N41-3 (GND) Below 1 Ω - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-4 (SMRG) - N41-3 (GND) -40 to 80°C (-40 to 176°F) 20.6 to 40.8 Ω If the result is not as specified, replace the HV battery junction block assembly.
- Measure the resistance according to the value(s) in the table below.
- Inspect SMRP:
- Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(HV Battery Junction Block Assembly)- - Standard Resistance
Tester Connection Condition Specified Condition W3-1 (CEI) - Z17-1 (-) Auxiliary battery voltage applied between terminals N41-2 (SMRP) and N41-3 (GND) 10 kΩ or higher Auxiliary battery voltage applied between terminals N41-2 (SMRP) and N41-3 (GND) 24.3 and 29.7 Ω - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition N41-2 (SMRP) - N41-3 (GND) -40 to 80°C (-40 to 176°F) 140 to 290 Ω If the result is not as specified, replace the HV battery junction block assembly.
- Measure the resistance according to the value(s) in the table below.
- Inspect SMRB: