DTC B15D9-87: Operation Panel Missing Message [09/2022 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 300h, 2024 Lexus ES 250, 2023 Lexus ES 350, and 2023 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - BATTERY AND BODY GROUND)
Pre-procedure1
- Disconnect the G23 air conditioning control assembly connector.
Procedure1
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G23-4 (E) - Body ground Always Below 1 Ω - Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition G23-7 (ACC) - Body ground Always 10.5 to 16 V*1
11 to 14 V*2G23-8 (IG+) - Body ground Always 10.5 to 16 V*1
11 to 14 V*2G23-16 (+B) - Body ground Always 10.5 to 16 V*1
11 to 14 V*2*1: w/ Stop and Start System*2: w/o Stop and Start System
Result
Proceed to OK NG Post-procedure1
- None
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 2
- Disconnect the G23 air conditioning control assembly connector.
- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - MULTI-DISPLAY ASSEMBLY)
Pre-procedure1
- Disconnect the G23 air conditioning control assembly connector.
- Disconnect the G22 multi-display assembly connector.
Procedure1
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G23-1 (TX1+) - G22-6 (TX1+) Always Below 1 Ω G23-2 (TX1-) - G22-18 (TX1-) Always Below 1 Ω G23-1 (TX1+) - Body ground Always 10 kΩ or higher G23-2 (TX1-) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG Post-procedure1
- None
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- REPLACE AIR CONDITIONING CONTROL ASSEMBLY
- Replace the air conditioning control assembly with a new or known good one.
HINT:
Refer to REMOVAL [08/2021 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Replace the air conditioning control assembly with a new or known good one.
- CLEAR DTC
Result:
NEXT
See step 5
- CHECK FOR DTC
- Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
A
END (AIR CONDITIONING CONTROL ASSEMBLY IS DEFECTIVE)
Result:
B
REPLACE MULTI-DISPLAY ASSEMBLY. Refer to REMOVAL [08/2021 - ]
- Recheck for DTCs and check that no DTCs are output.