Tire Pressure Warning System Ecu Power Source Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (ECU - BATTERY)
CHECK HARNESS AND CONNECTOR (ECU - BODY GROUND)
TIRE PRESSURE WARNING SYSTEM - ECU Power Source Circuit |
DESCRIPTION
This is the power source for the tire pressure warning ECU and receiver.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the GTS and write them down before removal.
- It is necessary to perform initialization (LandCruiser RM000000XMZ0AOX.html) after registration (LandCruiser RM000000XN10DCX.html) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK HARNESS AND CONNECTOR (ECU - BATTERY) |
Disconnect the tire pressure warning ECU and receiver R41 connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
R41-1 (IG) - Body ground
| Ignition switch ON
| 10 to 16 V
|
Ignition switch off
| Below 1 V
|
Text in Illustration*a
| Front view of wire harness connector
(to Tire Pressure Warning ECU and Receiver)
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| 2.CHECK HARNESS AND CONNECTOR (ECU - BODY GROUND) |
Disconnect the tire pressure warning ECU and receiver R41 connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
R41-12 (GND) - Body ground
| Always
| Below 1 Ω
|
Text in Illustration*a
| Front view of wire harness connector
(to Tire Pressure Warning ECU and Receiver)
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
