| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM0000018LY008X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pressure Warning Reset Switch Circuit; 2007 MY LX470 [08/2006 - ] | ||
|
Tire Pressure Warning Reset Switch Circuit |
DESCRIPTION
During initialization, the tire pressure warning ECU receives the signal from the tire pressure warning reset switch. If the ECU receives the signal, 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 and receiver, read the IDs stored in the old ECU using the intelligent tester and write them down before removal.
-
It is necessary to perform initialization
![2007 MY LX470 [08/2006 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION")
after registration
of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU 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:
Reset switch ON:
Tire pressure warning light comes on.
Reset switch OFF:
Tire pressure warning light blinks.
| OK |
|
|
|
2. |
INSPECT TIRE PRESSURE WARNING RESET SWITCH |
|
(a) Remove the reset switch. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
3 - 4 |
ON |
Below 1 Ω |
|
OFF |
10 kΩ or higher |
| NG |
|
|
|
3. |
CHECK HARNESS AND CONNECTOR (RESET SWITCH - ECU) |
|
(a) Disconnect the T37 switch connector. (b) Disconnect the T35 ECU connector. (c) Measure the resistance according to the value(s) in the table below. Standard resistance:
|
|
| NG |
|
| OK |
|
|
|