Mercedes-Benz CS1000 - Manual (Page 108)

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108
FAULT DIAGNOSIS
1. IGNITION : Position 1
2. Temperature selector wheel : "LO"
3. Within 20 seconds press the REST and DEFROST buttons simultaneously for more than 5 seconds.
4. The LED in the RECIRCULATE button flashes and "dI A" appears on the display.
5. Press the AUTO button until all DTC's are displayed and recorded.
6. The current faults are displayed first, then the intermittent faults. "END'" is displayed when all codes have
been displayed.
7. To erase codes press v and ^ simultaneously for more than 5 seconds. The display will then show "---".
Press AUTO to cancel the erase.
8. IGNITION : OFF to end the test program.
FAULT CODES - 202 Chassis from 9/95
DTC Readout Description
026 CAN Bus Communication
226 In-Car Air Temperature Sensor (B10/4)
227 Outside Air Temperature Sensor (B14)
228 Heater Core Temperature Sensor (B10/1)
230 Evaporator Temperature Sensor (B10/6)
231 Engine Coolant Temperature Sensor (B11/4)
232 Refrigerant Pressure Sensor (B12)
233 Refrigerant Temperature Sensor (B12/1)
241 Refrigerant Level
416 Coolant Circulation Pump (A31m1)
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 (N65)
422 Serial Interface Connection (K1) to Instrument Cluster (IC)
451 Diverter Flap (Y11/3)
452 Blend Air Flap (Y11/3)
453 Fresh/Recirculated Air Flap (Y11/3) Long Stroke
454 Fresh/Recirculated Air Flap (Y11/3) Short Stroke
455 Defroster Outlet Flap (Y11/3) Long Stroke
456 Defroster Outlet Flap (Y11/3) Short Stroke
457 Footwell Flap (Y11/3) Long Stroke
458 Footwell Flap (Y11/3) Short Stroke
459 Serial Interface Connection (K2) to Instrument Cluster (IC)