C2168

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2165/65: Abnormal Temperature Inside ID1 Tire

DTC C2165/65 - Abnormal Temperature Inside ID1 Tire

DTC C2166/66 - Abnormal Temperature Inside ID2 Tire

DTC C2167/67 - Abnormal Temperature Inside ID3 Tire

DTC C2168/68 - Abnormal Temperature Inside ID4 Tire

DTC 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 and receiver along with the transmitter ID. If the measured temperature is out of the specified range, the tire pressure warning ECU and receiver 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:
- When replacing the tire pressure warning ECU, read the IDs stored in the ECU using the intelligent tester and note them down before removal.
- It is necessary to perform initialization after registration of the transmitter IDs into the tire pressure warning ECU after the tire pressure warning valve and transmitter have been replaced.
HINT: Set the tire pressure to the specified value.

Cold tire inflation pressure:






*1: For driving under 100 mph (160 km/h)
*2: For driving at 100 mph (160 km/h) or more

PROCEDURE

1. CHECK TIRES
(a) Check that the tires are not flat, and there is no indication of air pressure drop.
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
OK -- Continue to next step.
2. IDENTIFY TRANSMITTER CORRESPONDING TO DTC
(a) Set the tire pressure to the specified value.
Cold tire inflation pressure:





*1: For driving under 100 mph (160 km/h)
*2: For driving at 100 mph (160 km/h) or more
(b) Display the "TIREPRESS" data for each wheel using the intelligent tester.
(c) Rapidly reduce the tire pressure for each wheel (at least 40 kPa, 0.41 kgf/cm2, 5.8 psi within 30 seconds).





(d) Check the DATA LIST.
Result:





NOTICE:
- It takes about 1 minute or more to display the updated data.
- When no "TIREPRESS" data has changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then forcibly transmit the transmitter ID and recheck it.
- Record the transmitter ID and position that is normal condition.
(e) When the "TIREPRESS" data (ID1 to ID5) has changed, repeat this procedure to identify the tire pressure warning valve and transmitter that is corresponding to a DTC.
(f) When all of the "TIREPRESS" data (ID1 to ID5) have 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.
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 valve and transmitter that have not been replaced should be checked using the tester and recorded.

NEXT -- Continue to next step.
4. PERFORM REGISTRATION (TRANSMITTER ID)
(a) Register the transmitter ID for all 5 wheels .
(b) Set the tire pressure of all wheels to the specified value.
Cold tire inflation pressure:





*1: For driving under 100 mph (160 km/h)
*2: For driving at 100 mph (160 km/h) or more
NEXT -- Continue to next step.
5. PERFORM INITIALIZATION
(a) Perform initialization .
NEXT -- Continue to next step.
6. CHECK DTC
(a) Check for a DTC .
Result:






B -- END
A -- REPLACE TIRE PRESSURE WARNING ECU