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.
1993 Mercedes Benz 400EFACTORY OEM SERVICE PROCEDURE
Electrical System Tests Component Locations (Section 21)
ELECTRICAL SYSTEM TESTS COMPONENT LOCATIONS (SECTION 21)
| Component | See | |
|---|---|---|
| CHECK ENGINE MIL (A1e26) | Fig 1 | |
| Fuse, LH-SFI Control Module Voltage Supply (F2) | Fig 1 | |
| LH-SFI Control Module (N3/1) | Fig 1 | |
| Electronic Accelerator/Cruise Control/Idle Speed Control Module (N4/1) | Fig 1 | |
| Base Module (N16/1) | Fig 1 | |
| ABS/ASR Control Module (N30/1) | Fig 1 | |
| Diagnostic Module (N59) | Fig 1 | |
| Diagnostic Connector - Diagnostic Trouble Code, 38 Pole (X11/4) | Fig 1 | |
| Diagnostic Module Test Connection (X11/21) | Fig 1 | |
| Pushbutton W/LED (X11/21s1) | Fig 1 | |
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.
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