DESCRIPTION
When the theft deterrent system is in the alarm sounding state, the main body ECU outputs a signal repeatedly at 0.4 second intervals, causing the horn(s) to sound.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK HORN OPERATION |
(a) Press the horn switch and check if the horn(s) sound.
OK:
Horn(s) operate normally.
NG |
GO TO HORN SYSTEM |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM (VEHICLE HORN) |
(a) Operate the Techstream according to the steps on the display and select Active Test (See page ).
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Vehicle Horn |
Vehicle horn(s) |
ON/OFF |
- |
OK:
Horn(s) operate normally.
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
3. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - MAIN BODY ECU) |
(a) Disconnect the 1C relay connector.
(b) Remove the main body ECU (See page ).
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
1C-7 - A-28 (HORN) |
Always |
Below 1 Ω |
1C-7 or A-28 (HORN) - Body ground |
Always |
10 kΩ or higher |
OK |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE
1. REMOVE FRONT WHEEL
2. REMOVE DISC BRAKE CYLINDER ASSEMBLY LH
3. REMOVE FRONT DISC
...
Security Horn Assembly
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE AIR CLEANER CAP AND HOSE
2. REMOVE AIR CLEANER CASE SUB-ASSEMBLY
3. REMOVE SECURITY HORN ASSEMBLY
(a) Disconnect the connector.
...