DESCRIPTION
If additional registration is not possible, a malfunction of the electrical key transmitter sub-assembly, certification ECU (smart key ECU assembly), engine switch, No. 1 indoor electrical key antenna assembly (front floor), steering lock ECU (steering lock actuator or upper bracket assembly) or electrical key and TPMS receiver assembly is suspected.
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
HINT:
When additional registration is not possible, freeze frame data may be stored in the certification ECU (smart key ECU assembly).
If freeze frame data is available, it can be helpful in determining whether any parts were malfunctioning or not or narrowing down the suspected areas based on the table below.
Registration Function (Reason for Non-operation)
Parameter Name |
Cause of Problem and Countermeasure |
---|---|
Failed Registration Mode |
Make sure that another mode or a different registration mode is not selected, and then perform registration again. |
Key Registration Max |
Registration was not possible because the maximum number of the electrical key transmitter sub-assemblies has already been registered to the certification ECU (smart key ECU assembly). If a new electrical key transmitter sub-assembly needs to be registered, such as when one of the registered electrical key transmitter sub-assemblies has been lost, erase an unnecessary ID code first. |
Key Verification: Amp Abnormal |
Although a registered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration could not be confirmed due to a malfunction of the immobiliser amplifier, such as a short to ground. DTC B278A or B2784 was stored. |
Key Verification: Read Error |
A registered electrical key transmitter sub-assembly was not held near the engine switch properly or electrical key transmitter sub-assembly registration cannot be confirmed due to wave interference, etc. Register the electrical key transmitter sub-assembly using the correct procedure or use another registered electrical key transmitter sub-assembly. |
Transponder Key Amp Abnormal |
Although an unregistered electrical key transmitter sub-assembly was held near the engine switch, electrical key transmitter sub-assembly registration cannot be completed due to a malfunction of the immobiliser amplifier, such as a short to ground. DTC B278A or B2784 was stored. |
New Key Registration Error |
An unregistered electrical key transmitter sub-assembly was not held near the engine switch properly or electrical key transmitter sub-assembly registration cannot be confirmed due to a malfunction, such as wave interference. Reregister the electrical key transmitter sub-assembly using the correct procedure or use another registered electrical key transmitter sub-assembly. |
New Key Vehicle ID Error |
Although the vehicle ID stored in the certification ECU (smart key ECU assembly) should be registered to the electrical key transmitter sub-assembly during electrical key transmitter sub-assembly registration, it was not successful. Use another unregistered electrical key transmitter sub-assembly for registration. |
New Key Registration Failed |
Although an unregistered electrical key transmitter sub-assembly was held near the engine switch for registration, electrical key transmitter sub-assembly registration was not successful due to wave interference (such as radio waves emitted from a device in the cabin) or a low transmitter battery. |
New Key Already Registered |
As a registered electrical key transmitter sub-assembly was held near the engine switch by mistake, electrical key transmitter sub-assembly registration was not successful. Using an unregistered electrical key transmitter sub-assembly, perform the registration procedure again. |
New Key ID Code Error |
Replace the certification ECU (smart key ECU assembly). |
New Key Information Abnormal |
The ID code of an electrical key transmitter sub-assembly could not be registered to the certification ECU (smart key ECU assembly). If 2 electrical key transmitter sub-assemblies are held near the engine switch at the same time, incorrect registration information will be stored in the certification ECU (smart key ECU assembly), suspending registration. Reregister the electrical key transmitter sub-assembly using the correct registration procedure. |
Tester Display |
---|
Operation History |
PROCEDURE
1. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble CodesOK:
DTCs are not output.
NG |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
2. |
READ VALUE USING TECHSTREAM (UNMATCHED VEHICLE-ID) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG)
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Smart Key > Data List
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|---|
Unmatched Vehicle-ID |
Key No. (incorrect or correct) |
Yes or No |
Yes: Communication malfunction No: Communication normal |
The vehicle ID registered in the vehicle and the vehicle ID registered in the electrical key transmitter sub-assembly are different (if a key from another vehicle is brought into the vehicle exterior detection area while the doors are locked, "Yes" is displayed for "Unmatched Vehicle-ID" in the Data List). Other potential causes:
|
Tester Display |
---|
Unmatched Vehicle-ID |
Result |
Proceed to |
---|---|
"No" is displayed |
A |
"Yes" is displayed |
B |
B |
GO TO STEP 4 |
|
3. |
CHECK STEERING LOCK SYSTEM |
(a) Check that the steering unlocks.
Click here
HINT:
Check that the communication between the steering lock ECU (steering lock actuator or upper bracket assembly) and certification ECU (smart key ECU assembly) is normal.
OK:
The steering unlocks.
NG |
GO TO STEERING LOCK SYSTEM |
|
4. |
REGISTRATION |
(a) Using an unregistered electrical key transmitter sub-assembly, perform the additional registration procedure.
HINT:
Refer to Registration.
Click here
OK:
Additional registration can be completed.
OK |
REPLACE ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY (FIRST REGISTERED KEY WAS DEFECTIVE) |
|
5. |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Replace the certification ECU (smart key ECU assembly) with a new one and register the electrical key transmitter sub-assemblies.
Click here
HINT:
Refer to Registration.
Click here
OK:
All of the electrical key transmitter sub-assemblies could be registered to the new certification ECU (smart key ECU assembly) successfully.
OK |
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) |
NG |
GO TO OTHER PROBLEM (New key cannot be Registered) |
Toyota CH-R Owners Manual > Using the driving support systems: LDA (Lane Departure Alert with steering control)
Summary of functions
When driving on highways and freeways with white (yellow) lines, this function
alerts the driver when the vehicle might depart from its lane and provides assistance
by operating the steering wheel to keep the vehicle in its lane.
The LDA system recognizes visible white (ye ...
Toyota CH-R Service Manual > Smart Key System(for Start Function): Customize Parameters
CUSTOMIZE PARAMETERS
CUSTOMIZE SMART KEY SYSTEM (for Start Function)
NOTICE:
When the customer requests a change in a function, first make sure that
the function can be customized.
Record the current settings before customizing.
HINT:
The following items can be customized. ...