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 | |
|---|---|---|
| ASR Control Module (N30/1) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| Base Module (N16/1) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| CKP Sensor (L5) | ||
| Engine 104 | Fig 2 | |
| Engine 119 | Fig 5 | |
| CMP Sensor (L5/1) | ||
| Engine 104 | Fig 2 | |
| Engine 119 | Fig 5 | |
| Data Link Connector - DTC Readout (X11/4) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| DI Control Module (N1/3) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| EA/CC/ISC Control Module (N4/1) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| High Voltage Distributor (S5/3) | ||
| Engine 104 | Fig 2 | |
| Ignition Coil (T1) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Ignition Coil 1 - Right Cylinder Bank (T1/1) | ||
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| Ignition Coil 2 - Left Cylinder Bank (T1/2) | ||
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| Knock Sensors (A16) | ||
| Engine 104 | Fig 2 | |
| Engine 119 | Fig 5 | |
| KS 1 (A16) - Right Side Of Engine | ||
| Engine 119 | Fig 5 | |
| KS 2 (A16g1) - Left Side Of Engine | ||
| Engine 119 | Fig 5 | |
| Left High Voltage Distributor (S5/5) | ||
| Engine 119 | Fig 5 | |
| LH-SFI Control Module (N3/1) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| Reference Resistor - DI (R16/2) | ||
| Model 140 W/Engine 104 | Fig 1 | |
| Model 124 W/Engine 119 | Fig 3 | |
| Model 140 W/Engine 119 | Fig 4 | |
| Right High Voltage Distributor (S5/6) | ||
| Engine 119 | Fig 5 | |
| Trasmission Overload Protection Switch (S65) | ||
| Engine 104 | Fig 2 | |
| Engine 119 | Fig 5 | |
Factory Service Tools
Use the Manual With the Right Hardware
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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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