Lexus ES manuals

Lexus ES: Operation Panel Disconnected (B15D9)

DESCRIPTION

The air conditioning control assembly and multi-display assembly are connected by an AVC-LAN communication line. When an AVC-LAN communication error occurs between the multi-display assembly and air conditioning control assembly, these DTCs will be stored.

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.

  • Air conditioning control assembly power source circuit
  • AVC-LAN circuit
  • Air conditioning control assembly
  • Multi-display assembly
  • Harness or connector

HINT:

The radio receiver assembly is the master unit.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

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

GO TO DTC B15D6

A

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 5

A

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.

NEXT

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 Codes

OK:

No DTCs are output.

OK

END (COMMUNICATION MALFUNCTION DUE TO NOISE)

NG

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) - Body ground

Power switch off

11 to 14 V

G23-7 (ACC) - Body ground

Power switch on (ACC)

11 to 14 V

G23-8 (IG+) - Body ground

Power switch on (IG)

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

G23-1 (TX1+) - G22-6 (TX1+)

Always

Below 1 Ω

G23-2 (TX1-) - G22-18 (TX1-)

Always

Below 1 Ω

G23-1 (TX1+) or G22-6 (TX1+) - Body ground

Always

10 kΩ or higher

G23-2 (TX1-) or G22-18 (TX1-) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.

CHECK AIR CONDITIONING CONTROL ASSEMBLY

(a) Replace the air conditioning control assembly with a new or known good one.

Click here

(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 Codes

OK:

No DTCs are output.

OK

END

NG

REPLACE MULTI-DISPLAY ASSEMBLY

READ NEXT:

 Telematics Transceiver Disconnected (B15DB)

DESCRIPTION If the radio receiver assembly cannot detect the DCM (telematics transceiver) for a certain period of time (90 seconds) after the power switch is turned on (ACC) and the radio receiver ass

 Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)

DESCRIPTION This DTC is stored when items controlled by the air conditioning amplifier assembly cannot be customized via the audio and visual system vehicle customization screen. HINT: The air conditi

 Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)

DESCRIPTION This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the audio and visual system vehicle customization screen. HINT: The main

SEE MORE:

 Precaution

PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System (for H

 IGB Signal Circuit Short to Auxiliary Battery (P1CFA12)

DESCRIPTION The hybrid vehicle control ECU monitors the IGB signal received from the certification ECU (smart key ECU assembly). When an error is detected in the IGB signal, this DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P1CFA12

© 2016-2024 Copyright www.lexguide.net