DESCRIPTION
The main body ECU (multiplex network body ECU) detects auto high beam switch signals. The automatic high beam system can be turned on and off by operating the integration control and panel assembly (automatic high beam switch).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to refer to registration.*1
PROCEDURE
1. |
READ VALUE USING Techstream |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
Auto High Beam Main Switch |
Auto high beam switch signal |
ON or OFF |
ON: Auto high beam switch pressed OFF: Auto high beam switch not pressed |
- |
Tester Display |
---|
Auto High Beam Main Switch |
OK:
Normal conditions listed above are displayed.
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT AUTO HIGH BEAM SWITCH |
(a) Remove the auto high beam switch.
Click here
(b) Inspect the auto high beam switch.
Click here
OK:
Auto high beam switch is normal.
NG |
REPLACE AUTO HIGH BEAM SWITCH |
|
3. |
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) |
(a) Disconnect the F15 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F6-6 (+B) - F15-17 (AHBI) |
Always |
Below 1 Ω |
F6-6 (+B) or F15-17 (AHBI) - Body ground |
Always |
10 kΩ or higher |
F6-3 (E) - Body ground |
Always |
Below 1 Ω |
OK |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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DESCRIPTION
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CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or
maintenance, performing initialization, registration or calibration may
be needed. Refer to Precaution for Audio and Visual System.
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The following may o ...