Tire Pressure Warning Light Circuit (from 07/2011)

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM (for Hatchback): Tire Pressure Warning Light Circuit
- Tire Pressure Warning Light Circuit

DESCRIPTION

If the tire pressure warning ECU detects any problems, the tire pressure warning light blinks (stays on after blinking for 1 minute) and tire pressure monitoring is cancelled 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





INSPECTION PROCEDURE

NOTICE:
* When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
* It is necessary to perform initialization Programming and Relearning after registration Registration (from 07/2011) of the transmitter IDs into the tire pressure warning ECU if the ECU has been replaced.
* When replacing the tire pressure warning ECU and receiver on vehicles equipped with the wireless door lock control system, be sure to perform Registration of Recognition Code to register the transmitter IDs after ECU replacement Registration (from 07/2011).

PROCEDURE

1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

(a) Check if a CAN communication system DTC is output.





Result





B -- GO TO CAN COMMUNICATION SYSTEM How To Proceed With Troubleshooting (from 07/2011)

C -- GO TO CAN COMMUNICATION SYSTEM How To Proceed With Troubleshooting (from 07/2011)
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (INDICATE. TIRE PRESSURE WARNING SYSTEM)

(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 by using the Techstream.

Combination Meter





OK:

The tire pressure warning light turns on or off in accordance with the Techstream operation.

NG -- GO TO METER / GAUGE SYSTEM How To Proceed With Troubleshooting (from 07/2011)
OK -- Continue to next step.

3. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (RDA TERMINAL) B1247

NG -- REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Removal (from 07/2011)
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU AND RECEIVER - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) B1247

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal (from 07/2011)