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DTC Detection Logic

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC LOGIC  .
  • If DTC B2603 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to DTC LOGIC  .
DTC DETECTION LOGIC TABLE

DTC Self-diagnosis name DTC detecting condition Possible causes
B2603 SHIFT POSITION STATUS BCM detects the followings status for 500 ms or more when shift is in P position, and ignition switch is in ON position.
  • Park/neutral position (PNP) switch: approx. 0V
  • Control device (detention switch): approx. 0V
  • Harness or connector

    (Control device circuit is open or shorted.)

  • Harness or connectors

    [Park/neutral position (PNP) switch circuit is open or shorted.]

  • Control device (detention switch)
  • Park/neutral position (PNP) switch