Inspection [09/2023 - ]: 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 DEVICE BOX
- Inspect SMRB:
- Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(No. 1 Traction Battery Device Box)- - Standard Resistance
Tester Connection Condition Specified Condition z17-1 (+) - e1-1 (CBI) Auxiliary battery voltage not applied between terminals z15-4 (SMRB) and z15-3 (GND) 10 kΩ or higher Auxiliary battery voltage applied between terminals z15-4 (SMRB) and z15-3 (GND) Below 1 Ω - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition z15-4 (SMRB) - z15-3 (GND) -40 to 80°C (-40 to 176°F) 19.0 to 59.0 Ω If the result is not as specified, replace the No. 1 traction battery device box.
- 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
(No. 1 Traction Battery Device Box)- - Standard Resistance
Tester Connection Condition Specified Condition z16-1 (-) - e2-1 (CEI) Auxiliary battery voltage not applied between terminals z15-1 (SMRG) and z15-3 (GND) 10 kΩ or higher Auxiliary battery voltage applied between terminals z15-1 (SMRG) and z15-3 (GND) Below 1 Ω - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition z15-1 (SMRG) - z15-3 (GND) -40 to 80°C (-40 to 176°F) 19.0 to 59.0 Ω If the result is not as specified, replace the No. 1 traction battery device box.
- 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
(No. 1 Traction Battery Device Box)- - Standard Resistance
Tester Connection Condition Specified Condition z16-1 (-) - e2-1 (CEI) Auxiliary battery voltage not applied between terminals z15-6 (SMRP) and z15-3 (GND) 10 kΩ or higher Auxiliary battery voltage applied between terminals z15-6 (SMRP) and z15-3 (GND) 24.3 to 29.7 Ω - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition z15-6 (SMRP) - z15-3 (GND) -40 to 80°C (-40 to 176°F) 140 to 290 Ω If the result is not as specified, replace the No. 1 traction battery device box.
- Measure the resistance according to the value(s) in the table below.
- Inspect SMRB: