DESCRIPTION
When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (driver side junction block assembly) transmits a signal to cause the horn to sound at intervals of 0.4 seconds.
WIRING DIAGRAM
PROCEDURE
1. |
INSPECT HORNS |
(a) Press the horn switch and check if the horns sound.
Result |
Proceed to |
---|---|
Horns sound |
A |
Horns do not sound |
B |
B | ![]() |
GO TO HORN SYSTEM |
|
2. |
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 horns operate.
Main Body
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Vehicle Horn |
Vehicle horns |
ON / OFF |
- |
OK:
The vehicle horns sound and stop correctly when operated through the Techstream.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
Random Access Memory (RAM) (P0604)
MONITOR DESCRIPTION
The ECM continuously monitors its internal memory status. This self-check ensures
that the ECM is functioning properly. It is diagnosed by internal "mirroring" of
the main CPU and sub CPU to detect Random Access Memory (RAM) ...
Disabling the TRAC system
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may reduce power
from the engine to the wheels. Pressing
to turn the system off may make it
easier for you to rock the vehicle in order to free it.
To turn the TRAC system off, quickly pr ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT TRANSMISSION OIL CLEANER MAGNET
(a) Use the removed transmission oil cleaner magnets to collect any steel
chips. Examine the chips and particles in the automatic transaxle oil pan
sub-assembly and on the tr ...