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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Engine Control System Diagnosis - 3.3L (5 Of 9)) >> DTC P0365-00: Camshaft Position Sensor B Circuit Malfunction (Bank 1) >> Component Inspection >> Check signal waveform of CMPS

Check signal waveform of CMPS

WARNING: This page is about a different variant/trim than selected.
  1. Set up an oscilloscope as follows:
    • Channel A (+): Signal terminal of the CMPS #2 (back probe), (-): ground
  2. Start the engine and check for signal waveform compared with reference waveform as below.

    Specification:  Refer to SIGNAL WAVEFORM & DATA 

  3. Is the signal waveform normal?

    YES 

    • Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Remove CMPS and check for air gap. Readjust as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If CKP synchronization fails, check that the crankshaft and camshaft are correctly aligned the matching marks of the pulleys. Repair or readjust as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Check CMPS for contamination, deterioration, or damage. Substitute with a known-good CMPS and check for proper operation. If the problem is corrected, replace CMPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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