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Home >> Mercedes Benz >> 1986 >> 560SL >> Repair and Diagnosis >> Engine Performance >> System >> Cis-E System >> Diagnostic Testing >> Test 8 >> Test Altitude Correction Capsule

Test Altitude Correction Capsule

  1. Disconnect plug on altitude correction capsule. Turn on ignition. Check voltage between terminals No. 2 and 3. Voltage should be about 5 volts. If not okay, check power supply and ground according to wiring diagram. If okay, go to step 2).
  2. Turn ignition off. Check wire between altitude correction capsule plug (terminal No. 1) to CIS-E control unit plug (terminal No. 11) for continuity. Resistance should be about zero ohms. If not okay, repair interruption. If okay, go to step 3).
  3. Start engine and run at idle speed and at operating temperature. The on-off ratio needle should oscillate. If not okay, replace altitude correction capsule. If okay, test is complete.
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