CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
2. |
INSPECT BATTERY VOLTAGE |
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
|
3. |
CHECK FOR DTC* |
(a) Check for DTCs and note any codes that are output (See page
).
(b) Clear the DTCs (See page ).
(c) Recheck for DTCs. Based on the DTCs output above, try to force output of the same CAN communication system or meter/gauge system DTC by reproducing the symptoms indicated by the DTC.
Result |
Proceed to |
---|---|
DTC is not output |
A |
CAN communication system DTC is output |
B |
Meter/gauge system DTC is output |
C |
B | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
C | ![]() |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
4. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table (See page
).
Result |
Proceed to |
---|---|
Fault is not listed in problem symptoms table |
A |
Fault is listed in problem symptoms table |
B |
B | ![]() |
GO TO STEP 6 |
|
5. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU (See page ).
(b) Data List / Active Test (See page ).
(c) Operation Check (See page ).
|
6. |
REPAIR OR REPLACE |
|
7. |
CONFIRMATION TEST |
NEXT | ![]() |
END |
Horn Circuit
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
...
Horn
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT HIGH PITCHED HORN ASSEMBLY
(a) Apply battery voltage and check the operation of the horn according to the
table below.
OK:
Measurement Condition
...