DESCRIPTION
If the tire pressure warning ECU and receiver detects any problems, the tire pressure warning light blinks for 1 minute then illuminates, and tire pressure monitoring is disabled at the same time. At this time, the ECU stores a DTC in memory.
Connecting terminals TC and CG of the DLC3 makes the tire pressure warning light blink to output DTCs. The tire pressure warning ECU and receiver sends the tire pressure warning light illumination request signal to the main body ECU (multiplex network body ECU) via a direct line. The main body ECU (multiplex network body ECU) then sends the signal to the combination meter assembly via CAN communication.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Check if CAN communication system DTCs are output (See page
).
Result |
Proceed to |
---|---|
DTCs are not output. |
A |
DTCs are output. |
B |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
CHECK DTC OUTPUT (B1247) |
(a) Clear the DTCs (See page ).
(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON.
(d) Check for DTCs (See page ).
OK:
DTC B1247 is not output.
NG | ![]() |
GO TO DTC (B1247) |
|
3. |
CHECK OPERATION OF TIRE PRESSURE WARNING LIGHT (ACTIVETEST) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(f) Check the condition of the tire pressure warning light using the Techstream.
Combination Meter
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Indicat. Tire Pressure Warning System |
Tire pressure warning light |
OFF or ON |
Confirm that the vehicle is stopped with the engine idling. |
OK:
The tire pressure warning light turns on or off in accordance with the Techstream operation.
OK | ![]() |
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
NG | ![]() |
GO TO METER / GAUGE SYSTEM |
Lost Communication with ECM (U0100,U0142,U0155)
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
U0100
No communication with ECM
CAN communication system
ECM
U0142
No communication with main body ECU
...
Components
COMPONENTS
ILLUSTRATION
*1
LOWER NO. 2 STEERING WHEEL COVER
*2
LOWER NO. 3 STEERING WHEEL COVER
*3
STEERING PAD
-
-
N*m (kgf*cm, ft.*lbf): Specified torque
-
...
Data List / Active Test
DATA LIST / ACTIVE TEST
NOTICE:
In the table below, the values listed under "Normal Condition" are reference
values. Do not depend solely on these reference values when deciding whether a part
is faulty or not.
HINT:
Using the Techstream to read the Data List allows the values or s ...