C2169

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2165/65-C2169/69: Abnormal Temperature Inside ID1 Tire
C2169/69 - Abnormal Temperature Inside ID5 Tire

DESCRIPTION

Each tire pressure warning valve and transmitter measures the internal temperature of its tire as well as tire pressure, and transmits the information to the tire pressure warning ECU 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 the tire pressure warning light blinks for 1 minute and then remains on.





HINT
* It is necessary to perform this procedure in order to identify the malfunctioning tire pressure warning valve and transmitter because it cannot be identified by only the output DTCs.
* DTC C2169/69 is used only when the vehicle is equipped with a ground spare tire.

INSPECTION PROCEDURE

NOTICE:
* When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using Techstream and note them down before removal.
* It is necessary to perform initialization Initialization after registration Registration of the transmitter IDs into the tire pressure warning ECU after the ECU and/or valve and transmitter has been replaced.

PROCEDURE

1. CHECK TIRES

(a) Check that the tires are not flat, and have no indication of air leaks.

OK:

Tires are normal.

HINT
If a tire is damaged, the tire pressure warning valve and transmitter may also have been damaged at the same time.

NG -- REPLACE TIRE AND TIRE PRESSURE WARNING VALVE AND TRANSMITTER Removal
OK -- Continue to next step.

2. IDENTIFY TRANSMITTER CORRESPONDING TO DTC

(a) Set the tire pressure to the specified value Component Tests and General Diagnostics.

(b) Turn the ignition switch off.

(c) Connect Techstream to the DLC3.

(d) Turn the ignition switch on (IG) and turn the tester on.

(e) Enter the following menus:

(1) Select: Chassis / Tire Pressure Monitor / Data List

(f) Display the "ID Tire Inflation Pressure" data for each wheel using the tester.

(g) Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(h) Check the DATA LIST.

Tire Pressure Monitor





HINT
*: It may take about 2 or 3 minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25 C2121.

Result





NOTICE:
* It takes about 2 or 3 minutes to display the updated tire pressure data.
* If no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270°. Then forcibly transmit the transmitter ID and recheck it.
* Record the transmitter ID and position of transmitters that are normal.

(i) When the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, repeat this procedure to identify the tire pressure warning valve and transmitter that corresponds to the DTC.

(j) When all of the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, identify the malfunctioning tire pressure warning valve and transmitter based on the recorded ID numbers and output DTC.

NEXT -- Continue to next step.

3. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the identified tire pressure warning valve and transmitter with a new one Removal.

HINT
* Before installing a new tire pressure warning valve and transmitter, read and write down its transmitter ID.
* The IDs for the tire pressure warning valves and transmitters that are not replaced should be checked using the tester and recorded.

NEXT -- Continue to next step.

4. CHECK REGISTRATION OF TRANSMITTER ID

(a) Register the transmitter ID for all wheels Registration.

NEXT -- Continue to next step.

5. PERFORM INITIALIZATION

(a) Perform initialization Initialization.

NEXT -- Continue to next step.

6. CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

(a) Turn the ignition switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the ignition switch on (IG) and turn the tester on.

(d) Enter the following menus:

(1) Select: Chassis / Tire Pressure Monitor / Data List

(e) Check the values by referring to the table below.

Tire Pressure Monitor





HINT
* *: It may take about 2 or 3 minutes until the values are displayed.
* If no "ID Tire Inflation Pressure" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270°. Then rapidly release the tire pressure and recheck it.

Result





B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU Removal