2012 Infiniti M37 BaseFACTORY OEM SERVICE PROCEDURE

Fail-Safe Control By DTC

WARNING: This page is about a different car, the 2013 Infiniti M56 and 2013 Infiniti M37. However, it is still accessible from the selected car via links, so may be relevant.

BCM performs fail-safe control when any DTC are detected.

Display contents of CONSULT Fail-safe Cancellation
B2192: ID DISCORD BCM-ECM Inhibit engine cranking Erase DTC
B2193: CHAIN OF BCM-ECM Inhibit engine cranking Erase DTC
B2195: ANTI-SCANNING Inhibit engine cranking Ignition switch ON → OFF
B2196: DONGLE NG Inhibit engine cranking Erase DTC
B2198: NATS ANTENNA AMP Inhibit engine cranking Erase DTC
B2608: STARTER RELAY Inhibit engine cranking 500 ms after the following signal communication status becomes consistent
  • Starter motor relay control signal
  • Starter relay status signal (CAN)
B260F: ENG STATE SIG LOST Inhibit engine cranking When any of the following conditions are fulfilled
  • Power position changes to ACC
  • Receives engine status signal (CAN)
B2619: BCM Inhibit engine cranking 1 second after the steering lock unit power supply output control inside BCM becomes normal
B26F1: IGN RELAY OFF Inhibit engine cranking When the following conditions are fulfilled
  • Ignition switch ON signal (CAN: Transmitted from BCM): ON
  • Ignition switch ON signal (CAN: Transmitted from IPDM E/R): ON
B26F2: IGN RELAY ON Inhibit engine cranking When the following conditions are fulfilled
  • Ignition switch ON signal (CAN: Transmitted from BCM): OFF
  • Ignition switch ON signal (CAN: Transmitted from IPDM E/R): OFF
B26F3: START CONT RLY ON Inhibit engine cranking When the following conditions are fulfilled
  • Starter control relay signal (CAN: Transmitted from BCM): OFF
  • Starter control relay signal (CAN: Transmitted from IPDM E/R): OFF
B26F4: START CONT RLY OFF Inhibit engine cranking When the following conditions are fulfilled
  • Starter control relay signal (CAN: Transmitted from BCM): ON
  • Starter control relay signal (CAN: Transmitted from IPDM E/R): ON
B26F7: BCM Inhibit engine cranking by Intelligent Key system When room antenna and luggage room antenna functions normally
Factory Service Tools

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When to See a Mechanic

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.