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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1220 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P183F >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clear the DTC information.
  2. Turn the ignition OFF for 1 minute.
  3. Turn the ignition ON.
  4. Test for correct operation of the direction and range IMS switch circuits in every gear selection. Hold the selector in each gear position for at least 2 seconds. Refer to Typical Scan Tool Data.
    • If the Direction IMS operation does not match the logic table proceed with Circuit/System Testing.
    • If the IMS A/B/C/P operation does not match the logic table proceed to DTC P1824, P182A-P182F, P1838, or P1839 .
  5. Retest for DTC P183F
    • If the DTC resets, program the PIM with the latest software version and recheck for DTCs. If the DTC resets after programming or if the PIM already contains the latest software version, replace the PIM.
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