Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 Honda Element SC, AutomaticFACTORY OEM SERVICE PROCEDURE
Security Alarm System
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
The MICU controls the lighting system and the horns based on inputs from each switch and B-CAN data.
SECURITY ALARM SYSTEM OPERATION REFERENCE CHART
| Input | Output | |
|---|---|---|
| MICU | IG1 power supply Ignition key switch Audio switch Driver's door switch Front passenger's door switch |
|
| B-CAN | Driver's door key cylinder switch (LOCK/UNLOCK) | MICU (SET 1) message |
| Driver's door lock knob switch (UNLOCK) | MICU (SET2) message | |
| Front passenger's door lock knob switch (UNLOCK) | ALARM (ACTION) message | |
| Left sliding door switch Right sliding door switch | ALARM (HORN) message | |
| Left sliding door lock knob switch (UNLOCK) | ALARM (H/L LOW) message | |
| Right sliding door lock knob switch (UNLOCK) | ALARM (PARKING LIGHT) message | |
| Keyless LOCK/UNLOCK signal Door lock signal Relay control module (Security hood switch) Tailgate latch switch or full latch switch |
ALARM (CYCLE) message |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.