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
Body Electrical > Smart Key > Trouble CodesOK:
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 > Airbag System: Short in Front Pretensioner Squib RH Circuit (B1900/73-B1903/73)
DESCRIPTION
The front pretensioner squib RH circuit consists of the airbag sensor assembly
and front seat outer belt assembly RH.
The airbag sensor assembly uses this circuit to deploy the pretensioner when
deployment conditions are met.
These DTCs are stored when a malfunction is detected in ...
Toyota CH-R Service Manual > Navigation System: Speaker Output Short (B15C3)
DESCRIPTION
This DTC is stored when a malfunction occurs in the speakers.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
B15C3
Speaker Output Short
A short is detected in the speaker output circuit
...