| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Suspension | Section: Tire Pressure Monitoring | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000XNB026X |
| Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Tire Pressure Warning Reset Switch Circuit |
DESCRIPTION
During initialization, the tire pressure warning ECU receives a 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, read the 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 the 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:
Reset switch on
Tire pressure warning light turns on.
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 (INT) - 2 (E) |
On |
Below 1 Ω |
|
Off |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (RESET SWITCH - ECU AND BODY GROUND) |
|
(a) Disconnect the E23 reset switch connector. |
(b) Disconnect the L10 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L10-8 (CLSW) - E23-1 (INT) |
Always |
Below 1 Ω |
|
L10-8 (CLSW) - Body ground |
Always |
10 kΩ or higher |
|
E23-2 (E) - Body ground |
Always |
Below 1 Ω |
|
|
|