MODEL IDENTIFICATION
Note. This diagnostic information applies to 1997-2000 models with 2.3L engine (No. 111), equipped with Motor Electronics Sequential Fuel Injection (ME-SFI).
| Model | Chassis/Model Number | Engine Number |
|---|---|---|
| C230 (2.3L Non-Supercharged) | 202.023 | 111.974 |
MODEL IDENTIFICATION (1997)
| Model | Chassis/Model Number | Engine Number |
|---|---|---|
| C230 (2.3L Non-Supercharged) | 202.023 | 111.974 |
| C230 (2.3L Supercharged) | 202.024 | 111.975 |
| SLK230 | 170.447 | 111.973 |
MODEL IDENTIFICATION (1998-2000)
COMPONENT/CIRCUIT IDENTIFICATION
System components and connections are identified by the manufacturer with special designations in diagnostic information. See COMPONENT/CIRCUIT IDENTIFICATION table.
| Component/Circuit | Manufacturer's Designation |
|---|---|
| Adjustable Camshaft Timing Solenoid | Y49 |
| Air Flap/Air Filter Actuator | M16/7 |
| Air Pump Switchover Valve | Y32 |
| Backup Light Switch | S16/2 |
| Drive Authorization System (DAS) Control Module | N54/1 |
| Camshaft (CMP) Sensor | B6/1 |
| Clutch Pedal Switch | S40/2 Or S40/5 |
| Crankshaft Position (CKP) Sensor | L5 |
| Cruise Control Switch | S40 |
| EA/CC/ISC Actuator | M16/6 |
| ECM Tachometer Signal | TN Signal |
| EGR Switchover Valve | Y27 |
| Electric Cooling Fan Control Module | N76 |
| Electronic Ignition Lock Control Module | N73 |
| Engine Control Module (ECM) | N3/10 |
| Engine Coolant Temperature (ECT) Sensor | B11/4 |
| Fuel Injector | (1) Y62y1 |
| Fuel Tank Pressure Sensor | B4/3 |
| Ignition Coil | (2) T1/1 |
| Magnetic Supercharger Clutch | Y2/1 |
| Mass Airflow Sensor (MAF) | B2/5 |
| Oil Level Switch | S43 |
| Output Ground Circuit | W16/6 |
| O2S 1 (Before TWC) | G3/2 |
| O2S 2 (After TWC) | G3/1 |
| Passenger Side Fuse/Relay Panel | K40/4 |
| Pedal Value Sensor | B37 |
| Pressure Sensor | B28 |
| Purge Control Valve | Y58/1 |
| Purge Monitoring Pressure Sensor | B4/4 |
| Starter Lock-Out Relay Module | K40k2 |
| Starter Signal Circuit | Circuit 50 |
| Relay Module | K40 |
| Voltage Supply Circuit | Circuit 30 |
| (1) Last number identifies injector number. (2) Last number identifies coil, (1 for cylinders No. 1 and 3) and (2 for cylinders No. 2 and 4). | |
| (1) | Last number identifies injector number. |
| (2) | Last number identifies coil, (1 for cylinders No. 1 and 3) and (2 for cylinders No. 2 and 4). |
COMPONENT/CIRCUIT IDENTIFICATION
ECM CONNECTOR IDENTIFICATION
Note. When connecting test equipment, disconnect Engine Control Module (ECM) connector "D" first. When reconnecting connectors, connect connector "D" last. (Scheme 1)
Scheme 1
DIAGNOSTIC TROUBLE CODE IDENTIFICATION
Note. This diagnostic information applies to 1997-2000 models with 2.3L engine (No.111), equipped with Motor Electronics Sequential Fuel Injection (ME-SFI).
Note. When connecting test equipment, disconnect Engine Control Module (ECM) connector "D" first. When reconnecting connectors, connect connector "D" last. See ECM CONNECTOR IDENTIFICATION .
Use DTC identification to identify possible cause, then proceed to indicated area under TEST STEP/REMEDY column.. Before proceeding with diagnostic testing, see HOW TO READ DIAGNOSTIC INFORMATION . Some diagnostic information is identified by chassis/model number. See MODEL IDENTIFICATION .
If there is no DTC indicating no malfunction in system, and there is a complaint, perform FUEL INJECTION SYSTEM TESTS , IGNITION SYSTEM TESTS , ELECTRONIC ACCELERATOR TESTS and CRUISE CONTROL TESTS entirely.
| DTC | Definition | Test Step/Remedy |
|---|---|---|
| P0100 | MAF Circuit Malfunction | 4, see Fuel Injection System Test (Steps 3.0-4.1) |
| P0105 | MAP Circuit Malfunction | 6, see FUEL INJECTION SYSTEM TEST (STEPS 6.0 & 6.1) |
| P0110 | IAT Circuit Malfunction | 5, see FUEL INJECTION SYSTEM TEST (STEPS 5.0 & 5.1) |
| P0115 | ECT Circuit Malfunction | 8, see FUEL INJECTION SYSTEM TEST (STEPS 8.0 & 8.1) |
| P0120 | Throttle Position Circuit Malfunction | 3, see ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1) |
| P0130 | O2S-1 Circuit Malfunction | 10, see FUEL INJECTION SYSTEM TEST (STEPS 10.0 & 11.0) |
| P0133 | O2S-1 Circuit Slow Response | 10, see FUEL INJECTION SYSTEM TEST (STEPS 10.0 & 11.0) |
| P0135 | O2S-1 Heater Circuit Malfunction | 11, see FUEL INJECTION SYSTEM TEST (STEPS 10.0 & 11.0) |
| P0136 | O2S-2 Circuit Malfunction | 12, see FUEL INJECTION SYSTEM TEST (STEPS 12.0 & 13.0) |
| P0141 | O2S-2 Heater Circuit Malfunction | 13, see FUEL INJECTION SYSTEM TEST (STEPS 12.0 & 13.0) |
| P0170 | Fuel Trim Malfunction | Intake air leak, injectors, diaphragm pressure regulator, engine wear |
| P0201 | Injector Circuit Malfunction - Cyl. 1 | 14, see Fuel Injection System Test (Step 14.0) |
| P0202 | Injector Circuit Malfunction - Cyl. 2 | 15, see Fuel Injection System Test (Step 15.0) |
| P0203 | Injector Circuit Malfunction - Cyl. 3 | 16, see Fuel Injection System Test (Step 16.0) |
| P0204 | Injector Circuit Malfunction - Cyl. 4 | 17, see Fuel Injection System Test (Step 17.0) |
| P0243 | Recirculated Air Flap Actuator (M16/7) For Supercharger | 37, see Fuel Injection System Test (Steps 35.0-37.0) |
| P0300 | Random Misfire Detected | A. Random misfire 7 & 8, see Ignition System Test (Steps 7.0-8.1) B. Random misfire, TWC damaging 9, see IGNITION SYSTEM TEST (STEPS 9.0 & 9.1) 1, see FUEL INJECTOR TEST Compression pressure |
| P0301 | Cylinder 1 Misfire Detected | A. Cylinder 1 misfire 7, see Ignition System Test (Steps 7.0-8.1) B. Cylinder 1 misfire, TWC damaging 9, see IGNITION SYSTEM TEST (STEPS 9.0 & 9.1) 1, see FUEL INJECTOR TEST Compression pressure |
| P0302 | Cylinder 2 Misfire Detected | A. Cylinder 2 misfire 8, see Ignition System Test (Steps 7.0-8.1) B. Cylinder 2 misfire, TWC damaging 9, see IGNITION SYSTEM TEST (STEPS 9.0 & 9.1) 1, see FUEL INJECTOR TEST Compression pressure |
| P0303 | Cylinder 3 Misfire Detected | A. Cylinder 3 misfire 8, see Ignition System Test (Steps 7.0-8.1) B. Cylinder 3 misfire, TWC damaging 9, see IGNITION SYSTEM TEST (STEPS 9.0 & 9.1) 1, see FUEL INJECTOR TEST Compression pressure |
| P0304 | Cylinder 4 Misfire Detected | A. Cylinder 4 misfire 7, see Ignition System Test (Steps 7.0-8.1) B. Cylinder 4 misfire, TWC damaging 9, see IGNITION SYSTEM TEST (STEPS 9.0 & 9.1) 1, see FUEL INJECTOR TEST Compression pressure |
| P0325 | KS 1 Circuit Malfunction | Wiring, connector, A16 |
| P0335 | CKP Sensor Circuit Malfunction | 5, see IGNITION SYSTEM TEST (STEPS 5.0 & 5.1) |
| P0341 | CMP Sensor Circuit Range/Performance | 6, see IGNITION SYSTEM TEST (STEPS 6.0 & 6.1) |
| P0370 | Angle Deviation Between Camshaft And Crankshaft | Check basic adjustment of camshaft |
| P0400 Only USA Model 202: without supercharger | Exhaust Gas Recirculation Flow Malfunction | 22, see FUEL INJECTION SYSTEM TEST (STEPS 21.0 & 22.0) ; 23, see Fuel Injection System Test (Step 23.0) |
| O0410 Only USA Models 170 & 202 | Air Injection System Malfunction | 20, see Fuel Injection System Test (Step 20.0) |
| P0422 | TWC Efficiency Below Threshold | Replace TWC |
| P0440 Only USA Model 170 & model 202 as of 09/97 | EVAP System Malfunction | 26, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0) ; 28, see FUEL INJECTION SYSTEM TEST (STEPS 28.0 & 29.0) |
| P0441 | EVAP System Incorrect Purge Flow | 26 & 27, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0) |
| P0442 Only USA Model 170 & model 202 as of 09/97 | EVAP System Leak Detected (Small Leak) | 28, see FUEL INJECTION SYSTEM TEST (STEPS 28.0 & 29.0) |
| P0443 | EVAP System Purge Control Valve Circuit Malfunction | 26, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0) |
| P0446 Only USA Model 170 & model 202 as of 09/97 | EVAP System Vent Control Malfunction | A. Activated charcoal canister shut-off valve 27, see FUEL INJECTION SYSTEM TEST (STEPS 26.0 & 27.0) ; 28, see FUEL INJECTION SYSTEM TEST (STEPS 28.0 & 29.0) & 30, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 30.1) B. End stage activated charcoal canister shut-off valve 29, see FUEL INJECTION SYSTEM TEST (STEPS 28.0 & 29.0) |
| P0450 Only USA Models 170 & 202 | EVAP System Pressure Sensor Malfunction | A. Fuel tank pressure sensor electrical fault 30, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 30.1) B. Fuel tank pressure sensor electrical fluctuations Charcoal canister plugged |
| P0450 Only USA Model 202 up to 08/97 | EVAP System Pressure Sensor Malfunction | 31, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 30.1) |
| P0455 Only USA Model 170 & model 202 as of 09/97 | EVAP System Leak Detected (Large Leak) | EVAP system, large leak 28, see FUEL INJECTION SYSTEM TEST (STEPS 28.0 & 29.0) Fuel tank pressure sensor 30, see FUEL INJECTION SYSTEM TEST (STEPS 30.0 & 30.1) |
| P0460 Only USA Model 170 & model 202 as of 09/97 | Fuel Sensor Circuit Low Input | Fill fuel tank |
| P0500 | VSS Sensor Malfunction | Test ASR/ETS, see appropriate TRACTION CONTROL in BRAKES |
| P0507 | IDC RPM Higher Than Expected | 1, 2 & 3, see ELECTRONIC ACCELERATOR TESTS |
| P0560 | System Voltage Malfunction | 1, see FUEL INJECTION SYSTEM TEST (STEPS 1.0 & 1.1) ; 2, see Fuel Injection System Test (Steps 1.2-2.2) |
| P0565 | Cruise Control Switch | 1, see CRUISE CONTROL TESTS |
| P0600 | Serial Communication Link Malfunction | 32, see Fuel Injection System Test (Steps 32.0-32.2) |
| P0604 | Internal Control Module Random Access Memory (RAM) Error | (N3/10) |
| P0605 | Internal Control Module Read Only Memory (ROM) Error | (N3/10) |
| P0700 | Transmission Control System Malfunction Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0702 | Transmission Control System Electrical Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0715 | Input/Turbine Speed Sensor Circuit Malfunction Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0720 | Output Speed Sensor Circuit Malfunction Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0730 | Incorrect Gear Ratio Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0740 | Torque Converter Clutch Circuit Malfunction Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0743 | Torque Converter Clutch Circuit Electrical Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0748 | Pressure Control Solenoid Electrical Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0753 | Shift Solenoid A Electrical Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0758 | Shift Solenoid B Electrical Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0763 | Shift Solenoid C Electrical Read DTC memory of transmission control module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P0801 | Engine/Climate Control Electric Cooling Fan Malfunction | 38, see Fuel Injection System Test (Step 38.0) |
| P0803 Supercharger only | Air/Flap Filter Actuator Malfunction | 37, see Fuel Injection System Test (Steps 35.0-37.0) |
| P0805 Supercharger only | Supercharger Function | 35, see Fuel Injection System Test (Steps 35.0-37.0) |
| P0806 Supercharger only | Magnetic Supercharger Clutch | 36, see Fuel Injection System Test (Steps 35.0-37.0) |
| P0809 | Angle Deviation Between Camshaft & Crankshaft | Check basic adjustment of camshaft |
| P0811 | CAN From Electronic Ignition Lock | 32, see Fuel Injection System Test (Steps 32.0-32.2) |
| P1163 | Oil Level Switch | 34, see FUEL INJECTION SYSTEM TEST (STEPS 33.0 & 34.0) |
| P1181 | Engine/Climate Control Electric Cooling Fan Malfunction | 38, see Fuel Injection System Test (Step 38.0) |
| P1182 Only USA Model 170 & model 202 as of 09/97 | Model 170: Starter Lock Out Relay Module (N65k2) Model 202: Starter Relay (K40/4k2) | 3, see Fuel Injection System Test (Steps 3.0-4.1) |
| P1186 | Fuel Safety Shut Off Recognized | 3, see ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1) ; 4, see Electronic Accelerator Test (Steps 4.0-6.0) EA/CC/ISC actuator (M16/1) sticks or jammed, Check intake system for residue. |
| P01235 Supercharger only | Supercharger Function | 35, see Fuel Injection System Test (Steps 35.0-37.0) |
| P01236 Supercharger only | Magnetic Supercharger Clutch (Y2/1) | 36, see Fuel Injection System Test (Steps 35.0-37.0) |
| P1386 | Knock Sensor Control From ECM (N3/10) At End Stop | 1. Increased knock tendency due to bad fuel, carbon in combustion chamber or mechanical damage. 2. Engine control module (N3/10). |
| P1400 Only USA Model 202: without supercharger | EGR Switchover Valve Malfunction | 21, see FUEL INJECTION SYSTEM TEST (STEPS 21.0 & 22.0) |
| P1420 Only USA Models 170 & 202 | AIR Pump Switchover Valve) | 19, see FUEL INJECTION SYSTEM TEST (STEPS 18.0 & 19.0) |
| P1453 Only USA Model 202: without supercharger | AIR Relay Module | 18, see FUEL INJECTION SYSTEM TEST (STEPS 18.0 & 19.0) |
| P1491 | Refrigerant Pressure In A/C System Too High | Check automatic A/C system |
| P1519 | Adjustable Camshaft Timing Solenoid | 25, see Fuel Injection System Test (Steps 24.0-25.0) |
| P1525 | Adjustable Camshaft Timing Solenoid | 24, see Fuel Injection System Test (Steps 24.0-25.0) |
| P1542 | Pedal Value Sensor | 1, see ELECTRONIC ACCELERATOR TEST (STEPS 1.0 & 1.1) ; 2, see ELECTRONIC ACCELERATOR TEST (STEPS 2.0 & 2.1) |
| P1570 | CAN Signal From DAS Control Nodule To Engine Control Module | A. Start attempted with "locked" DAS, user error B. CAN signal from DAS control module to engine control module interrrupted. Check correct operation of DAS, step 23, see Fuel Injection System Test (Step 23.0) C. Engine control module and DAS control module are not compatible. Check control modules and part no. |
| P1580 | EA/CC/ISC Actuator | 3, see ELECTRONIC ACCELERATOR TEST (STEPS 3.0 & 3.1) ; 4, see Electronic Accelerator Test (Steps 4.0-6.0) |
| P1584 | Stop Lamp Switch | Check switch |
| P1603 | CAN Signal From EIS | 32, see Fuel Injection System Test (Steps 32.0-32.2) |
| P1605 | Poor road/traction condition recognition signal (via comparison of VSS RPM signals) | Test ASR./ESP, see appropriate TRACTION CONTROL article in BRAKES |
| P1642 | Engine Control Module Incorrectly Coded | Check version coding and correct. See VERSION CODING under SELF-DIAGNOSTICS. |
| P1643 | Engine Control Module Incorrectly Coded Or No CAN Transmission From Transmission Control Module | Check version coding and correct. See VERSION CODING under SELF-DIAGNOSTICS. Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P1644 | Transmission Version Can Not Be Checked Due To Low Voltage At Transmission Control Module | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES |
| P1681 | Crash Signal Not Plausible | 41, see Fuel Injection System Test (Steps 39.0-41.0) |
| P1747 | CAN Signal From ETC | Test Electronic Transmission Control (ETC). See appropriate AUTOMATIC TRANSMISSION ELECTRONIC CONTROLS article in TRANSMISSION SERVICE & REPAIR for IMPORTED VEHICLES Test instrument cluster |
DIAGNOSTIC TROUBLE CODE LIST
SIGNAL PATTERN IDENTIFICATION
Note. The following graphics identify normal signal patterns.
