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.
Engine/Motor Control Module, Fuse Panel B, Fuse Panel C
J271
Motronic Engine Control Module Power Supply Relay
J623
Engine/Motor Control Module
SB
Fuse Panel B
SB23
Fuse 23 (On Fuse Panel B)
SC
Fuse Panel C
SC22
Fuse 22 (On Fuse Panel C)
SC42
Fuse 42 (On Fuse Panel C)
T4cg
4-Pin Connector, Black
238
Ground Connection 1 (in Interior Wiring Harness)
638
Ground Connection on Right A-Pillar
*
Refer to Applicable Wiring Diagram for Fuses in Vehicle Interior
*2
Refer to Applicable Wiring Diagram for Fuses in Engine/Motor Compartment
NO RELATED
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.