SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 11 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (5 OF 9))DTC/CIRCUIT DIAGNOSISDTC P050A, P050B, P050E: COLD START CONTROLDTC LOGICDTC CONFIRMATION PROCEDURE
2019 Infiniti Q70 3.7 Luxe, AWD

DTC Confirmation Procedure

2019 Infiniti Q70 3.7 Luxe, AWDSECTION DTC Confirmation Procedure
WARNING: This page is about a different variant/trim than selected.
  1. PRECONDITIONING 

    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 11 V or more at idle.

    GO TO 2 .

  2. PERFORM DTC CONFIRMATION PROCEDURE-I 

    SYMBOL WITH CONSULT

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Select "DATA MONITOR" mode with CONSULT.
    4. Check the indication of "COOLAN TEMP/S".

    SYMBOL WITH GST

    Follow the procedure "With CONSULT" above.

    Is the value of "COOLAN TEMP/S" between 4 deg.C (39 deg.F) and 36 deg.C (97 deg.F)?

    YES

    GO TO 3 .

    NO

    Warm up the engine until the value of "COOLAN TEMP/S" reaches 4 deg.C (39 deg.F) or more. Retry from step 1.

    NO

    Cool engine down to less than 36 deg.C (97 deg.F). Retry from step 1.

  3. PERFORM DTC CONFIRMATION PROCEDURE-II 

    SYMBOL WITH CONSULT

    1. Set the select lever in N range.
    2. Start the engine and warm up in idle with the value of "COOLAN TEMP/S" between 4 deg.C (39 deg.F) and 40 deg.C (104 deg.F) for more than 15 seconds.
    3. Check 1st trip DTC.

    SYMBOL WITH GST

    Follow the procedure "With CONSULT" above.

    Is 1st trip DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    INSPECTION END

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.