Mercedes-Benz CS1000 - Manual (Page 111)

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FAULT DIAGNOSIS
1. IGNITION : Position 1
2. Left Temperature selector wheel : HI
Right Temperature selector wheel : LO
3. Within 20 seconds press the REST and EC buttons simultaneously for more than 5 seconds.
4. The LED in the RECIRCULATE button flashes and "dI R" appears on the display
5. Press the right AUTO button until all DTC's are displayed and recorded.
6. To erase all codes must be read out. Press both AUTO buttons simultaneously for more than 2 seconds. "d"
will be displayed on the left and "FF" is displayed on the right. The erase can be canceled by pressing the
AUTO.
7. Reset temperature selector to normal setting.
8. IGNITION : OFF to end the test program.
FAULT CODES - 210 Chassis from 9/95
DTC Readout Description
026 CAN - Communication
226 In-Car Air Temperature Sensor (B10/4)
227 Outside Air Temperature Sensor (B14)
228 Left Heater Core Temperature Sensor (B10/1)
229 Right Heater Core Temperature Sensor (B10/1)
230 Evaporator Temperature Sensor (B10/6)
231 Engine Coolant Temperature Sensor (B10/8)
232 Refrigerant Pressure Sensor (B12)
233 Refrigerant Temperature Sensor (B12/1)
234 Sun Sensor (B32)
235 Emissions (Refrigerant Leak) Sensor (B31)
241 Refrigerant Level
416 Coolant Circulation Pump (M13)
417 Left Duovalve (Water Valve) (Y21y1)
418 Right Duovalve (Water Valve) (Y21y2)
419 A/C Compressor Electromagnetic Clutch (A9k1)
420 Closed (Idle) Throttle Speed Increase
421 Pulse Module
422 Serial Interface Connection (K1) to Instrument Cluster (IC)
423 Switchover Valve Block (Y11)
424 Activated Charcoal Filter Actuator (A32m2) : OPEN
425 Activated Charcoal Filter Actuator (A32m2) : CLOSE
432 Maximum Heat
459 Serial Interface Connection (K2) to Instrument Cluster (IC)