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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSSECURITY CONTROL SYSTEM (DTC/CIRCUIT DIAGNOSIS)DTC/CIRCUIT DIAGNOSISDTC B210C: STARTER CONTROL RELAYDTC LOGICDTC DETECTION LOGIC
2019 Infiniti Q70 3.7 Luxe, AWD

DTC Detection Logic

2019 Infiniti Q70 3.7 Luxe, AWDSECTION DTC Detection Logic
NOTE:
  • If DTC B210C is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to DTC Logic .
  • When IPDM E/R power supply voltage is low (Approx. 7 - 8 V for about 1 second), the DTC B210C may be detected.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

B210C

START CONT RLY OFF

When comparing the following items, IPDM E/R detects that starter control relay is stuck in the OFF 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

    (The CAN communication line is open or shorted.)

  • IPDM E/R
  • BCM
  • Battery
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.