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.
Systems Controlled By IPDM E/R
- Lamp control
Using CAN communication lines, it receives signals from the BCM and controls the following lamps:
- Headlamps (Hi, Lo)
- Parking lamps
- Tail lamps and license lamps
- Front fog lamps
- Wiper control
Using CAN communication lines, it receives signals from the BCM and controls the front wipers.
- Heated mirror relay control
Using CAN communication lines, it receives signals from the BCM and controls the heated mirror relay.
- A/C compressor control
Using CAN communication lines, it receives signals from the ECM and controls the A/C compressor (magnetic clutch).
- Starter control
Using CAN communication lines, it receives signals from the ECM and controls the starter relay.
- Cooling fan control
Using CAN communication lines, it receives signals from the ECM and controls the cooling fan relays.
- Horn control
Using CAN communication lines, it receives signals from the BCM and controls the horn relay.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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