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DTC Detection Logic

NOTE:
  • If DTC P1612 is displayed with DTC U1000 (for BCM), first perform the trouble diagnosis for DTC U1000. Refer to DTC LOGIC .
  • If DTC P1612 is displayed with DTC U1010 (for BCM), first perform the trouble diagnosis for DTC U1010. Refer to DTC LOGIC .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1612 CHAIN OF ECM-IMMU Inactive communication between ECM and BCM.
  • Harness or connectors

    (The CAN communication line is open or shorted.)

  • BCM
  • ECM
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