Toyota Venza: 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 light also comes on when the headlight leveling ECU assembly detects a malfunction.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (BATTERY - COMBINATION METER ASSEMBLY) |
|
(a) Disconnect the E2 combination meter assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E2-13 (IG+) - Body ground |
Ignition switch ON |
11 to 14 V |
|
Ignition switch off |
Below 1 V |
|
*1 |
Front view of wire harness connector (to Combination Meter Assembly) |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY) |
|
(a) Disconnect the A40 headlight leveling ECU assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A40-6 (WNG) - E2-22 (LVWG) |
Always |
Below 1 Ω |
|
A40-6 (WNG) - Body ground |
Always |
10 kΩ or higher |
|
*1 |
Front view of wire harness connector (to Headlight Leveling ECU Assembly) |
|
*2 |
Front view of wire harness connector (to Combination Meter Assembly) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
INSPECT COMBINATION METER ASSEMBLY |
|
(a) Reconnect the E2 combination meter assembly connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E2-22 (LVWG) - Body ground |
Ignition switch ON |
11 to 14 V |
|
*1 |
Component with harness connected (Combination Meter Assembly) |
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPLACE COMBINATION METER ASSEMBLY |
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 ci ...
Speed Signal Circuit
DESCRIPTION
The headlight leveling ECU assembly receives the vehicle speed signal from the
combination meter assembly.
HINT:
A voltage of 12 V or 5 V is output from each ECU and then inpu ...
Other materials about Toyota Venza:
Inspection
INSPECTION
PROCEDURE
1. INSPECT TIRES
(a) Inspect the tires for wear and proper inflation pressure.
Cold Tire Inflation Pressure:
Tire Size
Front
kPa (kgf/cm2, psi)
Rear
kPa (kgf/cm2, psi)
P245/55R1 ...
Cruise SET Indicator Light Circuit
DESCRIPTION
The ECM detects a cruise control switch signal and sends it to the combination
meter assembly through CAN. Then the SET indicator light comes on.
The SET indicator light circuit uses CAN for communication. If there
is a malfunct ...
Push Switch / Key Unlock Warning Switch Malfunction (B2780)
DESCRIPTION
This DTC is stored if the transponder key ECU assembly does not detect that the
unlock warning switch assembly is ON even when the ignition switch is ON. Under
normal conditions, the unlock warning switch assembly is ON when the ignition switc ...
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