Toyota Venza: AWD Warning Light Remains ON
DESCRIPTION
The AWD control ECU is connected to the combination meter via the CAN communication system.
If the AWD control ECU stores any DTCs which are related to the active torque control 4WD system, the AWD warning light comes on in the combination meter.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
Check the condition of each related circuit connector before troubleshooting
(See page .gif)
).
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Check if the CAN communication system DTC is output (See page
).
(b) Check if the active torque control 4WD system DTC is output (See page
).
|
Result |
Proceed to |
|---|---|
|
Neither CAN communication system DTC nor active torque control 4WD system DTC is output |
A |
|
CAN communication DTC is output |
B |
|
Active torque control 4WD system DTC is output |
C |
HINT:
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.
| B | .gif) |
REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (CAN COMMUNICATION SYSTEM) |
| C | |
REPAIR CIRCUIT INDICATOR BY OUTPUT CODE (ACTIVE TORQUE CONTROL 4WD SYSTEM) |
|
.gif)
|
2. |
CHECK IF AWD CONTROL ECU CONNECTOR IS SECURELY CONNECTED |
(a) Check if the skid control ECU connector is securely connected.
OK:
The connector is securely connected.
| NG | |
CONNECT CONNECTOR TO ECU CORRECTLY |
|
|
3. |
CHECK BATTERY |
(a) Check the battery voltage.
Standard voltage:
11 to 14 V
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (2GR-FE) |
B |
|
NG (1AR-FE) |
C |
| B | |
INSPECT CHARGING SYSTEM (2GR-FE) |
| C | |
INSPECT CHARGING SYSTEM (1AR-FE) |
|
|
4. |
PERFORM ACTIVE TEST (AWD WARNING LIGHT) |
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Chassis / 4WD / Active Test.
(g) According to the display on the Techstream, perform the Active Test.
Chassis / 4WD / Active Test|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
4WD Warning Light |
AWD warning light |
Warning light is ON/OFF |
Observer combination meter |
OK:
The AWD warning light turns off.
| OK | |
REPLACE AWD CONTROL ECU |
|
|
5. |
CHECK WIRE HARNESS OR CONNECTOR (AWD CONTROL ECU - BATTERY) |
|
(a) Disconnect the ECU connector. |
|
.png)
(b) Turn the ignition switch to ON.
(c) Measure the voltage of the wire harness side connector.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D38-11 (IG1) - Body Ground |
Ignition switch ON |
11 to 14 V |
|
*1 |
Rear view of wire harness connector (to AWD Control ECU) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
6. |
CHECK WIRE HARNESS OR CONNECTOR (AWD CONTROL ECU - BODY GROUND) |
|
(a) Disconnect the ECU connector. |
|
.png)
(b) Measure the resistance of the wire harness side connector.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D38-23 (GND) - Body Ground |
Always |
Below 1 Ω |
|
*1 |
Rear view of wire harness connector (to AWD Control ECU) |
| OK | |
GO TO METER / GAUGE SYSTEM |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
AWD Warning Light does not Come ON
DESCRIPTION
Refer to "AWD Warning Light Remains ON" (See page
).
WIRING DIAGRAM
Refer to "AWD Warning Light Remains ON" (See page
).
CAUTION / NOTICE / HINT
Check the cond ...
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2-digit DTCs by flashing the AWD warning light.
HINT:
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