Toyota RAV4 manuals

Toyota Sienna Service Manual: Transmitter ID1 Operation Stop

Transmitter ID1 Operation Stop

DESCRIPTION

The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the air pressures of the tires. The measured values are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU. The ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the warning light in the combination meter comes on. The tire pressure warning ECU stores a DTC when the tire pressure warning valve and transmitter stops transmitting signals. At this time, forcibly transmit the signals by releasing the tire pressure rapidly. The stored DTC is cleared when the signal transmission is resumed.

Transmitter ID1 Operation Stop

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 perform initialization (See page TW-23) after registration (See page TW-20) of the transmitter IDs into the tire pressure warning ECU after the ECU and/or valve and transmitter have been replaced.

1 PERFORM FORCED TRANSMISSION OF TRANSMITTER ID OF ALL WHEELS

(a) Set the tire pressure to the specified value.

Cold tire inflation pressure

(b) Make sure that the ignition switch is off.

(c) Connect the intelligent tester to the DLC3.

(d) Turn the ignition switch to the ON position and turn the tester on.

(e) Select "TIREPRESS" by following the prompts displayed on the intelligent tester.

TIRE PRESSURE:

HINT: *: It may take about 5 to 6 minutes until the values are displayed. If the values are not displayed after about 5 to 6 minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2124/24 (See page TW-42).

(f) Rapidly release the pressures from each wheel by approximately 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(1) Check that each tire pressure data displayed on the intelligent tester screen has changed.

OK: Each tire pressure data displayed on the intelligent tester screen will change to the value of the tire pressure.

NOTICE:

(2) After confirming that all of the tire pressure data displayed on the intelligent tester screen have changed, set the tire pressure to the appropriate specified values.

HINT: If the tire pressure data displayed on the intelligent tester screen has not changed after rechecking, go to other problem procedure (for malfunction in transmission or reception function (See page TW- 42)).

END

Diagnostic trouble code chart
HINT: If a trouble code is displayed during the DTC check, inspect the circuit listed for that code. For details of each code, refer to the relevant page listed under respective "DTC No." ...

No Signal from Transmitter ID1
DESCRIPTION The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the air pressure of the tires. The measured values are transmitted to ...

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