2010 Infiniti M45 xFACTORY OEM SERVICE PROCEDURE

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION: 

Before performing the following procedure, confirm that battery voltage is more than 11 V at idle  .

WITH CONSULT-III

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Select "DATA MONITOR" mode with CONSULT-III.
  4. Check that the "COOLAN TEMP/S" indication is between 4°C (39°F) and 36°C (97°F).

    If "COOLAN TEMP/S" indication is within the specified value, go to the following step.

    If "COOLAN TEMP/S" indication is out of the specified value, cool engine down or warm engine up and go to step 1.

  5. Start engine and let it idle for 5 minutes.
  6. Check 1st trip DTC.
  7. If 1st trip DTC is detected, go to "DIAGNOSIS PROCEDURE ".

WITH GST

Follow the procedure "WITH CONSULT-III" above.

Chapter Navigation
Return to Chapter: DTC P1421 Cold Start Control
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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.