Description
The tire pressure warning valve and transmitter measures tire internal temperature as well as tire pressure, and transmits the information to the tire pressure monitor receiver along with the transmitter id.
If the measured temperature is out of the specified range, the tire pressure warning ecu recognizes it as a malfunction, outputs dtcs, and blinks the tire pressure warning light.
Hint:
It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because it cannot be identified by the output dtc.
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure warning valve and transmitter and/or the tire pressure warning ecu (see page tw-9).
Standard pressure: 220 kpa (2.2 Kgf/cm2, 32 psi)
Tire pressure warning ecu
Hint:
Result
Notice:
Standard pressure: 220 kpa (2.2 Kgf/cm2, 32 psi)
Ok: tire is normal.
Replace tire pressure warning valve and transmitter
How to proceed with troubleshooting
Hint:
Use these procedures to troubleshoot the tire pressure
warning system.
*: Use the intelligent tester.
Vehicle brought to workshop
Inspect battery voltage
Standard voltage:
11 to 14 v
If the voltage is below 11 v, recharge or replace the battery
before proceeding.
...
Terminals of ecm
Hint:
The standard normal voltage between each pair of ecm
terminals is shown in the table below. The appropriate
conditions for checking each pair of terminals are also
indicated. The result of checks should be compared with the
standard normal voltage for that pair of terminals, displayed ...
Disassembly
Remove generator pulley with clutch
Remove the cap from the pulley.
Using a screwdriver, puncture the center of the
cap and pry it off.
Notice:
Do not reuse the cap.
Install sst to the pulley and vise as shown in the
illustration.
Sst 09820-63020
Mount sst (a) i ...