DESCRIPTION
The certification ECU (smart key ECU assembly) blinks the security indicator light (clock assembly) when the immobiliser is set (engine switch off).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTCs are not output.
NG | ![]() |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (IMMOBILISER INDICATOR) |
(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 / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Smart Key > Active Test
Tester Display |
Measurement Item |
Type |
Diagnostic Note |
---|---|---|---|
Immobiliser Indicator |
Security indicator light |
OFF/ON |
- |
Tester Display |
---|
Immobiliser Indicator |
OK:
The security indicator light (clock assembly) operates normally.
NG | ![]() |
GO TO STEP 4 |
|
3. |
CHECK SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY) |
(a) When the immobiliser is set, check that the security indicator light (clock assembly) blinks.*1
OK:
The security indicator light (clock assembly) blinks normally.
(b) When the theft deterrent system is in the arming preparation state, check that the security indicator light (clock assembly) illuminates.*2
OK:
The security indicator light (clock assembly) illuminates normally.
Result |
Proceed to |
---|---|
*1 is NG (*2 is OK) |
A |
*2 is NG (*1 is OK) |
B |
A | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
B | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
4. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY)) |
(a) Disconnect the F1 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the F81 security indicator light (clock assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F1-20 (IND) - F81-9 (LP) |
Always |
Below 1 Ω |
F1-20 (IND) or F81-9 (LP) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the F1 certification ECU (smart key ECU assembly) connector.
(b) Reconnect the F81 security indicator light (clock assembly) connector.
(c) Using an oscilloscope, check the waveform.
*a |
Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
- |
- |
Measurement Condition:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F1-20 (IND) - Body ground |
Engine switch off → on (IG) |
Pulse generation → Below 2 V |
OK | ![]() |
REPLACE SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY)
|
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Toyota CH-R Service Manual > Id Code Box: Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the ID code box (immobiliser code ECU), refer to Registration.
Click here
PROCEDURE
1. INSTALL ID CODE BOX (IMMOBILISER CODE ECU)
(a) Engage the guides to install the ID code box (immobiliser code ECU) as shown
in the illustrat ...
Toyota CH-R Service Manual > Navigation System: Weather and traffic information cannot be obtained
CAUTION / NOTICE / HINT
NOTICE:
When replacing the radio and display receiver assembly, always replace it with
a new one. If a radio and display receiver assembly which was installed to another
vehicle is used, the following may occur:
A communication malfunction DTC may be stored.
...