| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Suspension | Section: Tire Pressure Monitoring | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000000XNB025X |
| Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Tire Pressure Warning Reset Switch Circuit |
DESCRIPTION
Initialization can be started by pressing the tire pressure warning reset switch and holding it for 3 seconds or more.
If the ECU receives the signal from the switch, the tire pressure warning light blinks 3 times (1 second on, 1 second off).
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
after registration
of the transmitter IDs into the tire pressure warning ECU, after the ECU and/or tire pressure warning valve and transmitter has been replaced.
PROCEDURE
|
1. |
CHECK TIRE PRESSURE WARNING RESET SWITCH FUNCTION |
(a) Perform the tire pressure warning reset switch test in Test Mode Procedure
.
OK:
|
Switch Condition |
Specified Condition |
|---|---|
|
Tire pressure warning reset switch ON |
Tire pressure warning light turns on. |
|
Tire pressure warning reset switch OFF |
Tire pressure warning light blinks. |
|
|
2. |
INSPECT TIRE PRESSURE WARNING RESET SWITCH |
|
(a) Remove the tire pressure warning reset switch
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
ON (Switch is pressed and held) |
Below 1 Ω |
|
OFF (Switch is not pressed) |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (RESET SWITCH - ECU AND BODY GROUND) |
(a) Disconnect the H52 reset switch connector.
(b) Disconnect the H40 ECU connector.
|
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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