Toyota CH-R Service Manual: New Key Registration Warning Message is not Displayed

Toyota CH-R Service Manual / Theft Deterrent / Keyless Entry / Smart Key System(for Entry Function) / New Key Registration Warning Message is not Displayed

DESCRIPTION

If the new key registration warning message is not displayed after an electrical key transmitter sub-assembly has been registered, there may be communication problem between the certification ECU (smart key ECU assembly) and combination meter assembly (meter ECU).

CAUTION / NOTICE / HINT

NOTICE:

The smart key system (for Entry Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Entry Function) after confirming that the communication systems are functioning properly.
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When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
Before replacing the certification ECU (smart key ECU assembly), refer to Precaution.
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After repair, confirm that no DTCs are output.

PROCEDURE

1.	CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

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

GO TO DIAGNOSTIC TROUBLE CODE CHART

2.	READ VALUE USING TECHSTREAM (FL DOOR COURTESY SWITCH)

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
FR Door Courtesy SW	Front door RH courtesy light switch signal	ON or OFF	ON: Front door RH open OFF: Front door RH closed	for RHD
FL Door Courtesy SW	Front door LH courtesy light switch signal	ON or OFF	ON: Front door LH open OFF: Front door LH closed	for LHD

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Courtesy SW

Front door RH courtesy light switch signal

ON or OFF

ON: Front door RH open

OFF: Front door RH closed

for RHD

FL Door Courtesy SW

Front door LH courtesy light switch signal

ON or OFF

ON: Front door LH open

OFF: Front door LH closed

for LHD

Body Electrical > Main Body > Data List

Tester Display
FR Door Courtesy SW
FL Door Courtesy SW

Result	Proceed to
On the Techstream screen, ON or OFF is displayed accordingly.	A
On the Techstream screen, ON or OFF is not displayed accordingly.	B

GO TO LIGHTING SYSTEM

3.	CHECK DOOR AJAR WARNING

(a) With all of the doors closed, lock the doors using the entry lock function and check that the warning message is displayed on the multi-information display.

HINT:

Warning function (door ajar warning)

Click here

Result	Proceed to
The warning message is displayed on the multi-information display.	A
The warning message is not displayed on the multi-information display.	B

GO TO METER / GAUGE SYSTEM

4.	REGISTRATION

(a) Clear all of the registered electrical key transmitter sub-assemblies except one and perform registration again.

HINT:

Refer to Registration.

Click here

5.	CHECK MULTI-INFORMATION DISPLAY

(a) With all of the doors closed, lock the doors using the entry lock function.

(b) Unlock the doors using the entry unlock function, open the driver door and check that the warning message is displayed on the multi-information display.

HINT:

Warning function (An electrical key transmitter sub-assembly has been registered)

Click here

Result	Proceed to
The warning message is displayed on the multi-information display.	A
The warning message is not displayed on the multi-information display.	B

END (10 DAYS MAY HAVE ELAPSED SINCE AN ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS REGISTERED)

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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