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Component/Circuit Identification

WARNING: This page is about a different car, the 1998 Mercedes-Benz SL500, 1997 Mercedes-Benz SL500, 1997 Mercedes-Benz E420, and 1996 Mercedes-Benz SL500. However, it is still accessible from the selected car via links, so may be relevant.

System components and connections are identified by the manufacturer with special designations in diagnostic information. See COMPONENT/CIRCUIT IDENTIFICATION  table.

COMPONENT/CIRCUIT IDENTIFICATION

Component/Circuit Manufacturer's Designation
Adjustable Camshaft Timing Solenoid (Left) Y49/1
Adjustable Camshaft Timing Solenoid (Right) Y49/2
Air Pump Switchover Valve Y32
AIR Relay Module K17
Base Module N16/1
Body Acceleration Sensor B24
Drive Authorization System (DAS) Control Module N54/1
Camshaft (CMP) Sensor B6/1
CAN BUS From ESP/SPS Control Module N47-5
Check Engine Malfunction Indicator Light A1e26
Crankshaft Position (CKP) Sensor L5
Cruise Control Switch S40
EA/CC/ISC Actuator M16/6
Engine Control Module (ECM) N3/10
Engine/Climate Control Electric Cooling Fan Control Module N76
Engine Coolant Temperature (ECT) Sensor B11/4
ECM Tachometer Signal TN Signal
ECM Voltage Supply Circuit 87M
Electronic Ground Right Component Compartment (Model 210) W16/6
Electronic Ground, Right Footwell (Models 129 & 140) W15/1
EVAP Charcoal Canister Shut-Off Valve Y58/4
Fuel Injector (1) Y62y1
Fuel Pump Relay Module (Models 129 & 140) K27
Fuel Tank Pressure Sensor B4/3
Ignition Coil (2) T1/1
Intake Air Temperature (IAT) Sensor B17
Knock Sensor 1 (Right) A16g1
Knock Sensor 2 (Left) A16g2
Mass Airflow Sensor (MAF) B2/5
Oil Level Switch S43
Output Ground Circuit Component Compartment (Model 140) W15
Output Ground Control Module Box (Model 129) W27
O2S 1 Left (Before TWC) G3/3
O2S 1 Right (Before TWC) G3/4
O2S 2 Left (After TWC) G3/5
O2S 2 Right (After TWC) G3/6
Pedal Value Sensor B37
Pressure Sensor B28
Purge Control Valve Y58/1
Purge Monitoring Pressure Sensor B4/4
Relay Module (Model 210) K40
Remote Central Locking (RCL) Control Module N54
Stop Light Switch S9/1
Transmission Control Module N15/3
Vehicle Speed Sensor, Left Front Axle L6/1
Vehicle Speed Sensor, Left Rear Axle L6/3
Voltage Supply Circuit Circuit 30
(1) Last number identifies injector number.
(2) Last number identifies coil number.