Section 21 (A/C-Heater System)
WARNING: This page is about a different car, the 1997 Mercedes-Benz E420, 1997 Mercedes-Benz E320, and 1997 Mercedes-Benz E300. However, it is still accessible from the selected car via links, so may be relevant.
- A/C System Specifications
- Description
- Operation
- Self-Diagnostics
- Notes
- RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCs)
- ERASING DIAGNOSTIC TROUBLE CODES (DTCs)
- Voltage Supply Circuit Check
- DTC 226: In-Vehicle Temperature Sensor
- DTC 228 & DTC 229: Left Heater Core Temperature Sensor Circuit & Right Heater Core Temperature
- DTC 230: Evaporator Temperature Sensor Circuit
- DTC 232 & 241: Refrigerant Pressure Sensor
- DTC 233 & 241: Refrigerant Temperature Sensor
- DTC 234: Sun Sensor Circuit
- DTC 235: Emissions Sensor Circuit
- DTC 416: Coolant Circulation Pump Circuit
- DTC 417 & 418: DUOVALVE (Heater Control Valve) Circuit
- DTC 419: A/C Compressor Activation Circuit
- DTC 421: Auxiliary Fan Circuit
- DTC 422: Connection To Instrument Cluster
- DTC 423: Switchover Valve Block Circuit
- DTC 424 & 425: Activated Charcoal Filter Actuator Circuit
- Testing
- Removal & Installation
- Vacuum Hose Diagram(S)
- Wiring Diagrams