Toyota Venza: Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
Active torque control 4WD system data can be read in the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs. Therefore when there seems to be a problem with the active torque control 4WD system, use the Techstream or SST to check and troubleshoot it.
2. CHECK DLC3
(a) The ECU uses CAN (ISO11898-1) and ISO9141-2 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO9141-2 format.
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Verify the conditions listed in the table below.
|
Symbol (Terminal No.) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
SIL (7) - SG (5) |
Bus + line |
During transmission |
Pulse generation |
|
CG (4) - Body Ground |
Chassis ground |
Always |
Below 1 Ω |
|
SG (5) - Body Ground |
Signal ground |
Always |
Below 1 Ω |
|
BAT (16) - Body Ground |
Battery positive |
Always |
10 to 14 V |
|
CANH (6) - CANL (14) |
CAN bus line |
Ignition switch off* |
54 to 69 Ω |
|
CANH (6) - CG (4) |
HIGH-level CAN bus line |
Ignition switch off* |
200 Ω or higher |
|
CANL (14) - CG (4) |
LOW-level CAN bus line |
Ignition switch off* |
200 Ω or higher |
|
CANH (6) - BAT (16) |
HIGH-level CAN bus line |
Ignition switch off* |
6 kΩ or higher |
|
CANL (14) - BAT (16) |
LOW-level CAN bus line |
Ignition switch off* |
6 kΩ or higher |
NOTICE:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, other switches or the doors.
If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector.
HINT:
Connect the cable of the Techstream to the DLC3, turn the ignition switch to ON and attempt to use the Techstream. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the Techstream.
- If communication is normal when the Techstream is connected to another vehicle, inspect the DLC3 of the original vehicle.
- If communication is still not possible when the Techstream is connected to another vehicle, the problem may be in the Techstream itself. Consult the Service Department listed in the Techstream instruction manual.
3. WARNING LIGHT
(a) When a problem occurs in the active torque control 4WD system, the AWD warning light on the combination meter comes on to inform the driver of the problem.
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK AWD CONTROL ECU
(a) Measure the voltage and resistance of the connector.
Terminal No. (Symbol)
Terminal Description
Condition
...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC (When Using Techstream)
(a) Check the DTCs.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Read the DT ...
Other materials about Toyota Venza:
Cruise control
Use the cruise control to maintain a set speed without depressing the accelerator
pedal.
1. Indicators
2. Cruise control switch
- Set the vehicle speed
Press the “ON-OFF” button to activate the cruise control.
Cruise control indicator will ...
Dtc Check / Clear
DTC CHECK / CLEAR
1. DTC CHECK/CLEAR (When Using the Techstream)
(a) Check for DTCs.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the Techstream on.
(4) Read the DTCs following the prompts on the Techstream. Enter ...
Radio Receiver Power Source Circuit
DESCRIPTION
This is the power source circuit to operate the radio and display receiver assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
inspection procedure. ...
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