Lexus ES manuals

Lexus ES: Headup Display Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Headup Display Communication Stop Mode

Any of the following conditions are met:

  • Communication stop for "Head Up Display" is indicated on the "Communication Bus Check" screen of the Techstream.

    Click here

  • Communication stop history for "Head Up Display" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Head Up Display" is 6 or more.)

    Click here

  • Communication system DTCs (DTCs that start with U) that correspond to "Headup Display Communication Stop Mode" in "DTC Combination Table" are output.

    Click here

  • Meter mirror sub-assembly branch line or connector
  • Power source circuit of meter mirror sub-assembly
  • Meter mirror sub-assembly ground circuit
  • Meter mirror sub-assembly

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

NOTICE:

  • Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

    Click here

  • Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here

  • After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

    DTC check procedure: Turn the power switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

  • After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

  • Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
  • When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.

PROCEDURE

1.

CHECK FOR OPEN IN CAN BUS LINES (METER MIRROR SUB-ASSEMBLY BRANCH LINE)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

(b) Disconnect the G27 meter mirror sub-assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G27-12 (MPX1) - G27-13 (MPX2)

Cable disconnected from negative (-) auxiliary battery terminal

54 to 69 Ω

*a

Front view of wire harness connector

(to Meter Mirror Sub-assembly)

NG

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (METER MIRROR SUB-ASSEMBLY)

OK

2.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

G27-4 (ES) - Body ground

Cable disconnected from negative (-) auxiliary battery terminal

Below 1 Ω

*a

Front view of wire harness connector

(to Meter Mirror Sub-assembly)

(b) Reconnect the cable to the negative (-) auxiliary battery terminal.

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

G27-1 (IG) - Body ground

Power switch on (IG)

11 to 14 V

G27-2 (B) - Body ground

Power switch off

11 to 14 V

OK

REPLACE METER MIRROR SUB-ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

READ NEXT:

 Door Mirror ECU RH Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Door Mirror ECU RH Communication Stop Mode Any of the following conditions are met: Communication stop for "Front Door RH/R-Mirror (FR-D

 Door Mirror ECU LH Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Door Mirror ECU LH Communication Stop Mode Any of the following conditions are met: Communication stop for "Front Door LH/L-Mirror (FL-D

 Driver Seat Control ECU Communication Stop Mode

DESCRIPTION Detection Item Symptom Trouble Area Driver Seat Control ECU Communication Stop Mode Any of the following conditions are met: Communication stop for "D-Seat" is indicated on

SEE MORE:

 How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the navigation system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS When troubleshooting, check that the problem symptoms have

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the Techstream to read the Data List allows the values or states of

© 2016-2024 Copyright www.lexguide.net