ENGINE TUNE-UP [MZR-CD (RF Turbo)]

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Engine tune-up preparation

1. Start the engine and warm up completely.

2. Verify that the gear is in neutral position.

3. Verify that the accelerator pedal is released.

4. Turn off the A/C switch.

5. Turn off all electrical loads.

6. Verify that no DTC is present.

7. Connect the WDS or equivalent to the DLC-2.

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8. Wait until the electrical fan stops.

Idle Speed Inspection

1. Perform “Engine Tune-up Preparation”. (See Engine tune-up preparation.)

2. Monitor the RPM PID using the WDS or equivalent.

3. Verify that engine speed is within specification.

  • If not as specified, inspect the following.
    ― Suction control valve
    ― Fuel injector
    ― Accelerator position sensor
    ― ECT sensor
    ― Fuel pressure sensor
    ― CMP sensor
    ― CKP sensor

  Idle-up speed (rpm)

  No load: 725—825
  A/C switch is on: 725—825

Correction Procedure

Injection amount correction

  Note
  • Perform this procedure at the recommended interval as described under “Fuel injection system” in “SCHEDULED MAINTENANCE.”

  Using WDS or equivalent

    Note
    • Perform procedure by selecting the corresponding menu on the WDS screen. The procedures appear when “Powertrain” in the “Toolbox tab” is selected.

  1. Perform “Engine Tune-up Preparation”. (See Engine tune-up preparation.)
  2. Perform “Injection Amount Correction” using the WDS or equivalent.

  Without using WDS or equivalent

  1. Start the engine.
  2. Repeatedly ground the test terminal 5 times within 5 seconds using a jumper wire.

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    ― If the glow indicator light does not illuminate, return to procedure 2.
      Note
      • When the fuel injector injection amount correction is completed, the glow indicator light flashes 5 times.