DTC C2128: Auto ID Under Registration [04/2018 -]: Procedure

1. Turn the power switch on (IG).
2. Check if the electronically controlled brake system DTCs are output.

   Chassis > ABS/VSC/TRAC > 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

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

Result: 

B 

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -] 

Result: 

A 

See step  2

1. Turn the power switch off.
2. Turn the power switch on (IG).
3. Perform ID registration for the tire pressure warning ECU and receiver (ID registration via the automatic ID registration function).

   Refer to REGISTRATION [04/2018 - 08/2019] , or refer to REGISTRATION [08/2019 -]

   HINT: 

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the Techstream on.
3. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
4. 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

5. 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 power 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 power 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 power 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 power switch is turned on (IG) from off.

   Result

   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

Result: 

B 

See step  5

Result: 

A 

See step  4

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

   Refer to REGISTRATION [04/2018 - 08/2019] , or refer to REGISTRATION [08/2019 -]

   Result

   Proceed to
   NEXT

Result: 

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.

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

   Refer to REGISTRATION [04/2018 - 08/2019] , or refer to REGISTRATION [08/2019 -]

   Result

   Proceed to
   NEXT

Result: 

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 power switch is turned off during ID registration