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.
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.
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.
Chassis > Tire Pressure Monitor > Clear DTCs(b) Turn the engine switch off.
(c) Turn the engine switch on (IG).
(d) Check for DTCs.
Chassis > Tire Pressure Monitor > Trouble Codes Result | Proceed to |
---|---|
B1247 is not output | A |
B1247 is output | B |
B | GO TO DTC (B1247) |
|
3. | CHECK OPERATION OF TIRE PRESSURE WARNING LIGHT (ACTIVE TEST) |
(a) Turn the engine switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(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 |
---|---|---|---|
Tire Pressure Warning System Indicator | Tire pressure warning light | OFF or ON | - |
Tester Display |
---|
Tire Pressure Warning System Indicator |
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 |