Toyota Venza: Headlight Leveling ECU Power Source Circuit
DESCRIPTION
This circuit detects the state of the ignition switch, and sends it to the headlight leveling ECU assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - HEADLIGHT LEVELING ECU ASSEMBLY) |
|
(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 |
|---|---|---|
|
A40-1 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
|
A40-1 (IG) - Body ground |
Ignition switch off |
Below 1 V |
|
*1 |
Front view of wire harness connector (to Headlight Leveling ECU assembly) |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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|
2. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - BODY GROUND) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Headlight Beam Level Control Actuator Circuit
DESCRIPTION
The headlight leveling ECU assembly actuates the headlight leveling motor according
to vehicle conditions.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHS ...
Indicator Circuit
DESCRIPTION
The headlight beam level control system indicator light in the combination meter
assembly comes on for approximately 3 seconds when the ignition switch is turned
to ON. The indicator ...
Other materials about Toyota Venza:
Torque Sensor Zero Point Adjustment Incomplete (C1516,C1526)
DESCRIPTION
These DTCs do not indicate a malfunction. The power steering ECU stores these
DTCs when it determines that the rotation angle sensor value initialization and
torque sensor zero point calibration are incomplete.
DTC No.
D ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
NOTICE:
Before installation, apply high temperature grease to the parts indicated by
arrows (See page ).
PROCEDURE
1. INSTALL NO. 2 PARKING BRAKE SHOE HOLD DOWN SPRING PIN (for 2WD)
(a) Install the No. 2 p ...
Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) (P2195,P2196)
DESCRIPTION
HINT:
Although the DTC titles say oxygen sensor, these DTCs relate to the
air fuel ratio sensor.
Sensor 1 refers to the sensor mounted in front of the three-way catalytic
converter and located near the engine assembly.
...
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