DTC B2299-19: Sub Battery System Output Power "F" Circuit Current Above Threshold [08/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR DTC
- Check for DTCs.
Body Electrical > Sub Battery System > Trouble Codes
Result
Result Proceed to B2299-19 is output A B2299-19 is not output B
Result:
B
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ]
Result:
A
See step 2
- Check for DTCs.
- CHECK HARNESS AND CONNECTOR (INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY) - SECOND POWER SUPPLY REMOTE PARKING CIRCUIT)
Pre-procedure1
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the H191 integrated capacitor (integration control supply) connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result H191-1 (BUA3) - Body ground Ignition switch off 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None
Result:
OK
REPLACE INTEGRATED CAPACITOR (INTEGRATION CONTROL SUPPLY). Refer to REMOVAL [08/2023 - ]
Result:
NG
See step 3
- CHECK HARNESS AND CONNECTOR (SECOND POWER SUPPLY REMOTE PARKING CIRCUIT)
Pre-procedure1
- Disconnect the H194 second power supply remote parking circuit connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result H191-1 (BUA3) or H194-5 (B1A2) - Body ground Ignition switch off 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None
Result:
OK
REPLACE SECOND POWER SUPPLY REMOTE PARKING CIRCUIT. Refer to REMOVAL [08/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR