| Last Modified: 4-30-2014 | 6.6 J | Doc ID: RM0000018LV001X |
| Model Year: 2006 | Model: LX470 | Prod Date Range: [05/2005 - ] |
| Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: ECU Power Source Circuit; 2006 MY LX470 [05/2005 - ] | ||
|
ECU Power Source Circuit |
DESCRIPTION
This is the power source for the tire pressure monitor ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
It is necessary to register an ID code after replacing the tire pressure monitor valve sub-assembly and/or the tire pressure monitor ECU
![2006 MY LX470 [05/2005 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: REGISTRATION](../../../../stylegraphics/info.gif "2006 MY LX470 [05/2005 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: REGISTRATION")
.
PROCEDURE
|
1. |
INSPECT FUSE (ECU-IG1) |
(a) Remove the ECU-IG1 fuse from the cowl side junction block LH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ω
| NG |
|
|
|
2. |
INSPECT RELAY (IG1 NO. 2) |
|
(a) Remove the IG1 NO. 2 relay from the cowl side junction block LH. |
|
(b) Measure the resistance of the relay.
Standard resistance:
|
Tester Connection |
Specified Condition |
|---|---|
|
1 - 2 |
Below 1 Ω |
|
3 - 5 |
10 kΩ or higher |
|
3 - 5 |
Below 1 Ω (When battery voltage is applied to terminals 1 and 2) |
| NG |
|
|
|
3. |
INSPECT TIRE PRESSURE MONITOR ECU |
|
(a) Disconnect the T35 ECU connector. |
|
(b) Measure the voltage of the wire harness side connector.
Standard voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
T35-1 (IG) - Body ground |
Ignition switch ON |
10 to 14 V |
| NG |
|
|
|
4. |
CHECK WIRE HARNESS (ECU - BODY GROUND) |
|
(a) Disconnect the T35 ECU connector. |
|
(b) Measure the resistance of the wire harness side connector.
Standard resistance:
|
Tester Connection |
Specified Condition |
|---|---|
|
T35-9 (GND) - Body ground |
Below 1 Ω |
| NG |
|
| OK |
|
|
|