DESCRIPTION
The security indicator light blinks continuously due to a continuous signal received from the certification ECU (smart key ECU assembly) while the engine immobiliser is set.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the certification ECU (smart key ECU assembly) is replaced, register the key
and ECU communication ID (See page ).
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(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.
Smart Key (Certification ECU (Smart Key ECU Assembly))
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Security Indicator |
Security indicator light |
ON or OFF |
- |
OK:
The security indicator light turns on and off according to operation via the Techstream.
OK | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
2. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ACCESSORY METER ASSEMBLY) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector.
(b) Disconnect the accessory meter assembly connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D25-2 (INDS) - F2-14 (LP) |
Always |
Below 1 Ω |
D25-2 (INDS) - Body ground |
Always |
10 kΩ or higher |
F2-14 (LP) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
*2 |
Front view of wire harness connector (to Accessory Meter Assembly) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
REPLACE ACCESSORY METER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Terminals Of Ecu
TERMINALS OF ECU
1. A/C AMPLIFIER
HINT:
Check from the rear of the connector while it is connected to the A/C amplifier.
Terminal No.
(Symbol)
Wiring Color
Terminal Description
Condition
Specified ...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
Actuator Supply Voltage Circuit / Open (P0657)
MONITOR DESCRIPTION
The ECM monitors the output voltage to the throttle actuator. This self-check
ensures that the ECM is functioning properly. The output voltage is usually 0 V
when the ignition switch is turned off. If the output voltage is higher than ...