Toyota 4Runner: Abnormal Temperature Inside ID1 Tire (C2165/65-C2169/69)

Toyota 4Runner Service Manual / Suspension / Tire Pressure Monitoring / Tire Pressure Warning System / Abnormal Temperature Inside ID1 Tire (C2165/65-C2169/69)

DESCRIPTION

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

DTC Code	Detection Condition	Trouble Area
C2165/65 C2166/66 C2167/67 C2168/68 C2169/69*	The temperature inside the tire is detected as being higher than 119°C (246°F) 255 times consecutively.	Tires Tire pressure warning valve and transmitter Tire pressure warning ECU

DTC Code

Detection Condition

Trouble Area

C2165/65

C2166/66

C2167/67

C2168/68

C2169/69*

The temperature inside the tire is detected as being higher than 119°C (246°F) 255 times consecutively.

Tires
Tire pressure warning valve and transmitter
Tire pressure warning ECU

*: w/ Spare Tire Pressure Warning Valve and Transmitter

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.

CAUTION / NOTICE / HINT

NOTICE:

When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the Techstream and note them down before removal.
It is necessary to perform registration of the transmitter IDs into the tire pressure warning ECU after the ECU and/or the tire pressure warning valve and transmitter has been replaced (See page ).

PROCEDURE

1.	CHECK TIRES

(a) Check that the tires are not flat and have 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.

REPLACE TIRE AND TIRE PRESSURE WARNING VALVE AND TRANSMITTER

2.	IDENTIFY TRANSMITTER CORRESPONDING TO DTC

(a) Set the tire pressure of all tires to the specified value (See page ).

(b) Turn the ignition switch off.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(g) Check the "ID Tire Inflation Pressure" data for each wheel using the Techstream.

(h) Rapidly reduce the tire pressure of each tire by at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(i) Check the Data List.

Tire Pressure Monitor

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
ID1 Tire Inflation Pressure	ID1 tire inflation pressure / min.: Absolute pressure 0.0 kPa (0.0 kgf/cm2, 0.0 psi), Relative pressure -100.0 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure 637.5 kPa (6.5 kgf/ cm2, 92 psi), Relative pressure 537.5 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0.0 kgf/cm2, 0.0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/ cm2, -14 psi) is displayed for relative pressure, data has not been received.*1
ID2 Tire Inflation Pressure	ID2 tire inflation pressure / min.: Absolute pressure 0.0 kPa (0.0 kgf/cm2, 0.0 psi), Relative pressure -100.0 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure 637.5 kPa (6.5 kgf/ cm2, 92 psi), Relative pressure 537.5 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0.0 kgf/cm2, 0.0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/ cm2, -14 psi) is displayed for relative pressure, data has not been received.*1
ID3 Tire Inflation Pressure	ID3 tire inflation pressure / min.: Absolute pressure 0.0 kPa (0.0 kgf/cm2, 0.0 psi), Relative pressure -100.0 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure 637.5 kPa (6.5 kgf/ cm2, 92 psi), Relative pressure 537.5 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0.0 kgf/cm2, 0.0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/ cm2, -14 psi) is displayed for relative pressure, data has not been received.*1
ID4 Tire Inflation Pressure	ID4 tire inflation pressure / min.: Absolute pressure 0.0 kPa (0.0 kgf/cm2, 0.0 psi), Relative pressure -100.0 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure 637.5 kPa (6.5 kgf/ cm2, 92 psi), Relative pressure 537.5 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0.0 kgf/cm2, 0.0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/ cm2, -14 psi) is displayed for relative pressure, data has not been received.*1
ID5 Tire Inflation Pressure*2	ID5 tire inflation pressure/ min.: Absolute pressure 0.0 kPa (0.0 kgf/cm2, 0.0 psi), Relative pressure -100.0 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure 637.5 kPa (6.5 kgf/cm2, 92 psi), Relative pressure 537.5 kPa (5.4 kgf/cm2, 78 psi)	Actual tire inflation pressure	If 0 kPa (0.0 kgf/cm2, 0.0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/ cm2, -14 psi) is displayed for relative pressure, data has not been received.*1

HINT:

*1: It may take approximately 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 C2124/24 or C2125/25*2 (See page ).

*2: w/ Spare Tire Pressure Warning Valve and Transmitter

Result

Result	Detection Condition
One of "ID Tire Inflation Pressure" data (ID1 to ID4 or ID5*) changed	Normal
No "ID Tire Inflation Pressure" data changed	Transmitter corresponding to DTC

*: w/ Spare Tire Pressure Warning Valve and Transmitter

NOTICE:

It takes approximately 2 or 3 minutes to display the updated tire pressure data.
When "ID Tire Inflation Pressure" data has not 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.
Record the transmitter ID and position of transmitters that are normal.

(j) When an "ID Tire Inflation Pressure" data value (ID1 to ID4 or ID5*) has changed, repeat this procedure for each tire.

*: w/ Spare Tire Pressure Warning Valve and Transmitter

(k) When all of the "ID Tire Inflation Pressure" data (ID1 to ID4 or ID5*) has changed, identify the malfunctioning tire pressure warning valve and transmitter using the recorded ID numbers and output DTC.

*: w/ Spare Tire Pressure Warning Valve and Transmitter

3.	REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

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

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 Techstream and recorded.

4.	PERFORM REGISTRATION OF TRANSMITTER ID

(a) Register the transmitter IDs for all wheels (See page ).

5.	CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

END

REPLACE TIRE PRESSURE WARNING ECU

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