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DTC 9004: Programmable Special Module (PSM) Programmed Calibration Check Sum Error: Notes

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

  1. When Monitored: 

    Continuously.

  2. Set Condition: 

    The Programmable Special Module (PSM) detects a Programmed Calibration Check Sum Error.

Possible Causes 
PROGRAMMABLE SPECIAL MODULE