Inspection [12/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT NO. 1 TRACTION BATTERY HEATER RELAY
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition 1(BH0) -3(HR0) Auxiliary battery voltage not applied between terminals 11(BHR) and 8(BHRG) 10 kΩ or higher Auxiliary battery voltage applied between terminals 11(BHR) and 8(BHRG) Below 1 Ω 6(BH1) -4(HR1) Auxiliary battery voltage not applied between terminals 11(BHR) and 8(BHRG) 10 kΩ or higher Auxiliary battery voltage applied between terminals 11(BHR) and 8(BHRG) Below 1 Ω If the result is not as specified, replace the No. 1 traction battery heater relay.
*a Component without harness connected
(No. 1 traction battery heater relay)
- Measure the resistance according to the value(s) in the table below.