LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2003 >> CLK430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - Self-Diagnostics With Codes) >> Component/Circuit Identification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component/Circuit Identification

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2002 Mercedes-Benz CL500, 2001 Mercedes-Benz CL500, 2000 Mercedes-Benz SL500, 2000 Mercedes-Benz S430, and 2000 Mercedes-Benz ML55. 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
Air Pump Relay Module K40/4k3
Air Pump Switchover Valve Y32
AIR Relay Module K17
Base Module N16/1
Drive Authorization System (DAS) Control Module N54/1
Camshaft (CMP) Sensor B6/1
CAN BUS From ESP/SPS Control Module N47-5
Crankshaft Position (CKP) Sensor L5
Cruise Control Switch S40/4
Cylinder Shutoff Valve (Right Bank) (Model 215) Y80
Cylinder Shutoff Valve (Left Bank) (Model 215) Y81
EA/CC/ISC Actuator M16/6
EGR Switchover Valve Y27
EGR Valve Vacuum Transducer Y31/1
Electronic Ignition Switch (EIS) N73
Engine Control Module (ECM) N3/10
Engine/Climate Control Electric Cooling Fan M4/3
Engine/Climate Control Electric Cooling Fan Control Module N76
Engine Coolant Temperature (ECT) Sensor B11/4
ECM Tachometer Signal TN Signal
EVAP Charcoal Canister Shut-Off Valve Y58/4
Fuel Injector (1) Y62y1
Fuel Pump Relay Module K27
Fuel Tank Pressure Sensor B4/3
Fuse/Relay Box F1
Ignition Coil (2) T1/1
Ignition/Starter Switch S2/1
Knock Sensor 1 (Right) A16g1
Knock Sensor 2 (Left) A16g2
Mass Airflow Sensor (MAF) B2/5
Oil Sensor B40
Output Ground Circuit Right Component Compartment (Models 208 & 210) W16/6
Output Ground Circuit Component Compartment (Model 163) W16
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
Passenger Side Fuse/Relay Module Box (Models 208 & 210) K40/4
Pedal Value Sensor B37
Pressure Sensor B28
Purge Control Valve Y58/1
Relay Module K40
Resonance Intake Manifold Switchover Valve Y22/6
Starter Lock-Out Relay Module (Model 129) K38/1
Starter Relay Module (Model 163) F1k8
Stop Light Switch S9/1
Transmission Control Module N15/3
Voltage Supply Circuit Circuit 30
(1) Last number identifies injector number.
(2) Last number identifies coil number.