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.
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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 184 (MULTIPLEX INTEGRATED CONTROL SYSTEM)SYSTEM DESCRIPTIONDAYTIME RUNNING LIGHTS
2008 Chevrolet HHR LT, 2.4 P, Automatic
Daytime Running Lights
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Daytime Running Lights
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
The MICU control of the headlights as daytime running lights is based on inputs from each switch and B-CAN data.
MICU SPECIFICATIONS
| Input | Output | |
|---|---|---|
| MICU | IG2 power supply Headlight switch (OFF) Headlight switch (ON) Dimmer switch Passing switch |
Headlights (high beam via pulse width modulation) |
| B-CAN | Parking brake switch signal IG1 METER signal | Daytime running lights operation (DRLKC) message Daytime running lights warning (DRLWRN) message |
RENDER: 1.0x
NO RELATED
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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.