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Home >> Infiniti >> 2021 >> QX80 Premium Select, RWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security Control System (DTCS) >> IPDM E/R (IPDM E/R) >> DTC B210B: Starter Control Relay >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC B210B is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC Description .

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B210B

STR CONT RLY ON CIRC

When comparing the following items, IPDM E/R detects that starter control relay is stuck in the ON position for 1 second or more.

  • Starter control relay signal (CAN) from BCM
  • Starter relay status signal (CAN) from BCM
  • Starter control relay and starter relay status signal (IPDM E/R input)
  • Starter control relay control signal (IPDM E/R output)
  • P/N position signal input
  • Harness or connectors

    (CAN communication line is open or shorted.

  • IPDM E/R
  • BCM