Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Auto ID Under Registration (C2128)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Suspension / Tire Pressure Monitoring / Tire Pressure Warning System(for Gasoline Model) / Auto ID Under Registration (C2128)

DESCRIPTION

When ID registration is being performed via the automatic ID registration function, the tire pressure warning ECU and receiver stores C2128 and the tire pressure warning light flashes for 1 minute and then illuminates.

When the tire pressure warning ECU receives data from all registered tire pressure warning valve and transmitters and the system is judged to be normal, the tire pressure warning light turns off.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
C2128	Auto ID Under Registration	ID registration is being performed via the automatic ID registration function	Electronically controlled brake system	-

PROCEDURE

1.	CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Turn the engine switch on (IG).

(b) Check if the electronically controlled brake system DTCs are output.

Chassis > ABS/VSC/TRAC/EPB > Trouble Codes

HINT:

If DTC C2128 is stored, electronically controlled brake system DTCs may also be stored. If electronically controlled brake system DTCs are stored, perform troubleshooting for the electronically controlled brake system before performing ID registration via the automatic ID registration function.

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

2.	REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA AUTOMATIC ID REGISTRATION FUNCTION)

(a) Turn the engine switch off.

(b) Turn the engine switch on (IG).

(c) Perform ID registration for the tire pressure warning ECU and receiver (ID registration via the automatic ID registration function).

Click here

HINT:

Perform the following procedures within 1 trip and do not turn the engine switch off.

3.	READ VALUE USING TECHSTREAM ([RAM] AUTO ID REGISTERED WHEEL JUDGMENT STATUS)

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(d) According to the display on the Techstream, display the ECU Data List.

Chassis > Tire Pressure Monitor > Data List

Tester Display
[RAM] Auto ID Registered FL Wheel Judgment Status
[RAM] Auto ID Registered FR Wheel Judgment Status
[RAM] Auto ID Registered RL Wheel Judgment Status
[RAM] Auto ID Registered RR Wheel Judgment Status

(e) Refer to the following chart and check the "[RAM] Auto ID Registered Wheel Judgment Status" of each transmitter.

Chassis > Tire Pressure Monitor > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
[RAM] Auto ID Registered FL Wheel Judgment Status	FL wheel registration status during automatic ID registration (RAM)	Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered	Actual registration status	Cleared each time the engine switch is turned on (IG) from off.
[RAM] Auto ID Registered FR Wheel Judgment Status	FR wheel registration status during automatic ID registration (RAM)	Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered	Actual registration status	Cleared each time the engine switch is turned on (IG) from off.
[RAM] Auto ID Registered RL Wheel Judgment Status	RL wheel registration status during automatic ID registration (RAM)	Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered	Actual registration status	Cleared each time the engine switch is turned on (IG) from off.
[RAM] Auto ID Registered RR Wheel Judgment Status	RR wheel registration status during automatic ID registration (RAM)	Fixed, Under a Judgment of Side by Side Car Influence or Under a Judgment, Not Registered	Actual registration status	Cleared each time the engine switch is turned on (IG) from off.

Result	Proceed to
"Under a Judgment of Side by Side Car Influence or Under a Judgment" is displayed for 1 or more "[RAM] Auto ID Registered Wheel Judgment Status" Data List items.	A
"Under a Judgment of Side by Side Car Influence or Under a Judgment" is not displayed for any "[RAM] Auto ID Registered Wheel Judgment Status" Data List items.	B

GO TO STEP 5

4.	REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA TECHSTREAM)

(a) Perform ID registration for the tire pressure warning ECU and receiver (ID registration via Techstream).

Click here

END

5.	REGISTRATION OF TRANSMITTER ID (ID REGISTRATION VIA TECHSTREAM)

(a) Perform ID registration for the tire pressure warning ECU and receiver (ID registration via Techstream).

Click here

END

Transmitter ID not Received (Main) (C2126)

Transmitter ID1 Error (C2141-C2144)

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