DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security indicator blinks due to a signal output from the immobiliser system. The security indicator blinks continuously due to a continuous signal received from the immobiliser system while in the armed state.
The main body ECU (driver side junction block assembly) causes the security indicator to come on only during the arming preparation and alarm sounding states.
WIRING DIAGRAM
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Select the item below in the Active Test and then check that the indicator operates.
Main Body
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Security Indicator |
Security indicator |
ON / OFF |
- |
OK:
The security indicator light flashes and goes off correctly when operated through the Techstream.
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY - MAIN BODY ECU) |
(a) Disconnect the D51 main body ECU (driver side junction block assembly) connector. |
|
(b) Disconnect the F2 accessory meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D51-4 (IND) - F2-2 (SEC) |
Always |
Below 1 Ω |
D51-4 (IND) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block 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:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
INSPECT ACCESSORY METER ASSEMBLY (SECURITY INDICATOR LIGHT) |
(a) Reconnect the F2 accessory meter assembly connector with the D51 ECU connector still disconnected. |
|
(b) Apply battery voltage from the wire harness back side between the specified terminals of the indicator, and check the lighting condition of the security indicator.
OK :
Measurement Condition |
Specified Condition |
---|---|
Battery positive (+) → Terminal F2-2 (SEC) Battery negative (-) → Terminal F2-12 (E) |
Security indicator comes on |
*1 |
Component with harness connected (Accessory Meter Assembly) |
NOTICE:
OK |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG |
REPLACE ACCESSORY METER ASSEMBLY |
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