TC and CG Terminal Circuit
DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are output by the blinking of the tire pressure warning light.
WIRING DIAGRAM
HINT:
When each warning light blinks continuously, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.
CAUTION / NOTICE / HINTNOTICE:
- 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 registration of the transmitter IDs into the tire pressure warning ECU after the ECU and/or the tire pressure warning valve and transmitter has been replaced (See page
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).
CHECK HARNESS AND CONNECTOR (DLC3 - ECU AND BODY GROUND)
(a) Disconnect the F7 ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
|---|---|---|
F7-3 (TC) - F13-13 (TC) |
Always |
Below 1 Ω |
F7-3 (TC) - Body ground |
Always |
10 kΩ or higher |
F13-4 (CG) - Body ground |
Always |
Below 1 Ω |
| OK | .gif) | CHECK ECU POWER SOURCE CIRCUIT |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU |
Test yourself
A quick Toyota 4Runner quiz: every answer comes with an explanation and a link to the manual page.