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Home >> Mercedes Benz >> 1998 >> SL600 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Ignition System Tests >> Camshaft Position Sensor >> Right Cylinder Bank CMP Sensor (B6/3)
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Right Cylinder Bank CMP Sensor (B6/3)

NOTE: Right cylinder bank Camshaft Position (CMP) sensor (B6/3) is located at top front of engine between left and right adjustable camshaft timing solenoids. Adjustable camshaft timing solenoids are located at front of cylinder head. Right Camshaft Position (CMP) sensor (B6/3) and left CMP sensor (B6/2) are located next to each other. The right CMP sensor (B6/3) is positioned nearest to driver's fender. For ME-SFI control module location and identification, see ME-SFI CONTROL MODULE CONNECTOR IDENTIFICATION  .
NOTE: Manufacturer recommends checking camshaft hall-effect sensor signal using an oscilloscope. If an oscilloscope is not available, testing can be performed with a DVOM.
  1. Right CMP Sensor Signal (Testing With Oscilloscope) -  Connect oscilloscope between right cylinder bank ME-SFI control module connector 2 terminals No. 87 and 66 (socket box terminals No. 87 and 66). Observe oscilloscope with engine idling. See SIGNAL PATTERN IDENTIFICATION  .
  2. If voltage signal is okay, test is complete. If voltage signal is not okay, possible cause is right cylinder bank CMP sensor (B6/3) defective. Before replacing right cylinder bank CMP sensor (B6/3), check voltage supply. Go to step  4 . If voltage supply is okay, replace defective right cylinder bank CMP sensor (B6/3).
  3. Right CMP Sensor Signal (Testing With DVOM) -  Connect DVOM between right cylinder bank ME-SFI control module connector 2 terminal No. 66 (socket box terminal No. 66) and right cylinder bank ME-SFI control module connector 1 terminal No. 25 (socket box terminal No. 25). Observe DVOM with engine idling. Voltage should be 1.3-1.7 volts. Voltage will vary slightly. If voltage is okay, test is complete. If voltage is not okay, possible cause is wiring harness failure. Repair as necessary.
    NOTE: Wire color information for next step is not available.
  4. Right CMP Sensor Voltage Supply -  Disconnect right cylinder bank CMP sensor. Turn ignition on. Connect DVOM between right cylinder bank CMP sensor (B6/3) connector (harness side) terminals No. 1 and 3. Voltage should be 11-14 volts. If voltage is within specification, test is complete. If voltage is not within specification, possible cause is wiring harness failure. Repair as necessary.
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