Toyota Camry owners & service manuals

Toyota Camry (XV70): Auto ID Under Registration (C2128)

Toyota Camry Repair Manual XV70 (2018-2024) / Suspension / Tire Pressure Monitoring / Tire Pressure Warning System / 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

Vehicle stability control system

w/ Tire Inflation Pressure Display Function

PROCEDURE

1.

CHECK FOR DTC (VEHICLE STABILITY CONTROL SYSTEM)

(a) Turn the ignition switch to ON.

(b) Check if the vehicle stability control system DTCs are output.

Chassis > Brake > Trouble Codes

HINT:

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

Result

Proceed to

Vehicle stability control system DTCs are not output

A

Vehicle stability control system DTCs are output

B
B

GO TO VEHICLE STABILITY CONTROL SYSTEM

w/ Electric Parking Brake System: Click here

w/o Electric Parking Brake System: Click here

A

2.

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

(a) Turn the ignition switch off.

(b) Turn the ignition switch to ON.

(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 ignition switch off.

NEXT

3.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

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

(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

[RAM] Auto ID Registered Spare 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 ignition switch is turned to ON 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 ignition switch is turned to ON 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 ignition switch is turned to ON 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 ignition switch is turned to ON from off.

[RAM] Auto ID Registered Spare Wheel Judgment Status

Spare 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 ignition switch is turned to ON from off.
  • *1

HINT:

*1: w/ Full Size Spare Tire

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
B

GO TO STEP 5

A

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

NEXT

END

Explain to customer that there is a high possibility that they traveled in close proximity to another vehicle with the same type of tire pressure warning valve and transmitter during ID registration via the automatic ID registration function.

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

NEXT

END

Explain to the customer that the time required for registration to complete varies depending on the driving conditions and circumstances.

HINT:

Registration may take longer than normal in the following situations.

  • The vehicle is stopped frequently
  • The vehicle is stopped for long period of time
  • The vehicle is driven in reverse
  • The vehicle is driven on rough roads or uneven surfaces
  • The vehicle was not stopped for 15 minutes or more before registration
  • The vehicle is driven at 40 km/h (25 mph) or less for a long period of time
  • The ignition switch is turned off during ID registration

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