DESCRIPTION
If the tire pressure warning ECU and receiver detects any problems, the tire pressure warning light blinks (stays on after blinking for 1 minute) and tire pressure monitoring is canceled 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:
Click here
PROCEDURE
1. |
CHECK FOR DTC (CAN COMMUNICATION SYSTEM) |
(a) Check if CAN communication system DTCs are output.
Click here
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.
Click here
(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON.
(d) Check for DTCs.
Click here
OK:
DTC B1247 is not output.
NG | ![]() |
GO TO DTC (B1247) |
|
3. |
CHECK OPERATION OF TIRE PRESSURE WARNING LIGHT (ACTIVE TEST) |
(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.
Body Electrical > Combination Meter > Active Test
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Indicat. Tire Pressure Warning System |
Tire pressure warning light |
OFF or ON |
Perform the test with the vehicle stopped and engine idling. |
Tester Display |
---|
Indicat. Tire Pressure Warning System |
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 |
Toyota CH-R Service Manual > Air Conditioning System(for Automatic Air Conditioning System With Top-mounted
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DESCRIPTION
The No. 1 cooler thermistor (evaporator temperature sensor) is installed to the
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Toyota CH-R Service Manual > Can Communication System: Check Bus 3 Line for Short to +B
DESCRIPTION
There may be a short circuit between one of the CAN bus lines and +B when no
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