| Last Modified: 4-30-2014 | 6.6 J | Doc ID: RM0000018LW002X |
| Model Year: 2006 | Model: LX470 | Prod Date Range: [05/2005 - ] |
| Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: Tire Pressure Warning Light Circuit; 2006 MY LX470 [05/2005 - ] | ||
|
Tire Pressure Warning Light Circuit |
DESCRIPTION
If the ECU detects trouble, the tire pressure warning light comes on and tire pressure monitor is canceled at the same time. At this time, the ECU records a DTC in memory.
Connect terminals TC and CG of the DLC3 to make the tire pressure warning light blink and output the DTC.
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")
.
HINT:
This procedure must be performed according to the PROBLEM SYMPTOMS TABLE.
PROCEDURE
|
1. |
INSPECT FUSE |
(a) Remove the MET fuse from the cowl side junction block RH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ω
| NG |
|
|
|
2. |
CHECK WIRE HARNESS AND CONNECTOR (BATTERY - COMBINATION METER) |
|
(a) Disconnect the C14 combination meter connector. |
|
(b) Turn the ignition switch ON.
(c) Measure the voltage of the wire harness side connectors.
Standard voltage:
|
Tester connection |
Condition |
Specified Condition |
|---|---|---|
|
C14-10 - Body ground |
Ignition switch ON |
10 to 14 V |
| NG |
|
|
|
3. |
CHECK WIRE HARNESS AND CONNECTOR (CONBINATION METER - ECU AND BODY GROUND) |
|
(a) Disconnect the T35 ECU connector. |
|
(b) Disconnect the C15 and C17 meter connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:
|
Tester Connection |
Specified Condition |
|---|---|
|
T35-5 (IND) - C15-13 |
Below 1 Ω |
|
T25-5 (IND) - Body ground |
10 kΩ or higher |
|
C17-1 - Body ground |
Below 1 Ω |
| NG |
|
|
|
4. |
OPERATION OF ECU WITH NEW OR NORMAL FUNCTIONING ECU |
(a) Temporarily replace the ECU with a new or normally functioning one.
(b) Check that the malfunction disappears.
OK:
Malfunction disappears
| NG |
|
| OK |
|
|
|