Toyota Venza: Headlight Signal Circuit
DESCRIPTION
The headlight leveling ECU assembly detects the low beam headlights status.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
First check that the low beam headlights operate normally.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (ENGINE ROOM JUNCTION BLOCK ASSEMBLY - ECU) |
|
(a) Disconnect the A40 headlight leveling ECU assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
A40-3 (B2) - Body ground |
Light control switch in head position |
11 to 14 V |
|
*1 |
Front view of wire harness connector (to Headlight Leveling ECU assembly) |
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Front Fog Light Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) controls the fog light
relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this ...
Light Control Switch Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) receives the following
switch information:
Light control switch position off, tail, head or AUTO
Dimmer switch positi ...
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Interior Light Auto Cut Circuit
DESCRIPTION
When battery saving control operates while the interior lights are on, the main
body ECU (driver side junction block assembly) opens the DOME CUT relay to turn
off the lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fu ...
Interior lights list
Your Toyota is equipped with the illuminated entry system to assist in entering
the vehicle. Due to the function of the system, the lights shown in the following
illustration automatically turn on/off according to the presence of the electronic
key (vehi ...
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