Lexus ES: Operation Panel Disconnected (B15D9)
DESCRIPTION
The multi-display assembly and air conditioning control assembly are connected by AVC-LAN communication lines.
This DTC is stored when an AVC-LAN communication error occurs between the multi-display assembly and air conditioning control assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15D9 | Operation Panel Disconnected | A device that is listed in the AVC-LAN connected device record of the master unit is missing. |
|
HINT:
The radio receiver assembly is the master unit.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
| 1. | CHECK DTC |
(a) If DTC B15D6 is output, perform troubleshooting for DTC B15D6 first.
| Result | Proceed to |
|---|---|
| DTC B15D6 is not output. | A |
| DTC B15D6 is output. | B |
| B | .gif) | GO TO DTC B15D6 |
|
| 2. | CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
(a) Check for optional components.
(1) Check that optional components (including associated wiring) which generate radio waves are not installed.
| Result | Proceed to |
|---|---|
| Optional components (including associated wiring) are installed. | A |
| Optional components (including associated wiring) are not installed. | B |
HINT:
- Electrical noise from radio waves generated by optional components or the wiring for those components may affect AVC-LAN communication.
- This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.
| B | | GO TO STEP 3 |
|
| 3. | REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING) |
(a) Remove optional components (including associated wiring).
NOTICE:
Do not remove optional components or associated wiring without the permission of the customer.
|
| 4. | CHECK DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs(b) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble CodesOK:
No DTCs are output.
| OK | | END |
|
| 5. | CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY POWER SOURCE) |
(a) Disconnect the G23 air conditioning control assembly connector.
(b) 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 |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G23-16 (+B) - G23-4 (E) | Always | 11 to 14 V |
| G23-7 (ACC) - G23-4 (E) | Engine switch on (ACC) | 11 to 14 V |
| G23-8 (IG+) - G23-4 (E) | Engine switch on (IG) | 11 to 14 V |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 6. | CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - MULTI-DISPLAY ASSEMBLY) |
(a) Disconnect the G23 air conditioning control assembly connector.
(b) Disconnect the G22 multi-display assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| G22-6 (TX1+) - G23-1 (TX1+) | Always | Below 1 Ω |
| G22-18 (TX1-) - G23-2 (TX1-) | Always | Below 1 Ω |
| G22-6 (TX1+) or G23-1 (TX1+) - Body ground | Always | 10 kΩ or higher |
| G22-18 (TX1-) or G23-2 (TX1-) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 7. | REPLACE AIR CONDITIONING CONTROL ASSEMBLY |
(a) Replace the air conditioning control assembly with a new or known good one.
Click here .gif)
(b) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs(c) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble CodesOK:
No DTCs are output.
| OK | | END |
| NG | | REPLACE MULTI-DISPLAY ASSEMBLY |
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SEE MORE:
Before driving
Observe the following before starting
off in the vehicle to ensure
safety of driving.
Installing floor mats
Use only floor mats designed specifically
for vehicles of the same model
and model year as your vehicle. Fix
them securely in place onto the carpet.
1. Insert the retaining hooks (clip
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the panoramic moon roof system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. CUSTOMER PROBLEM ANALYSIS HINT:
In troubleshooting, confirm that the problem
