Emission Control (Mfi) - Lancer: Other Mitsubishi Lancer X рестайлинг

VACUUM HOSE CHECK

1. Using the VACUUM HOSE ROUTING diagram as a guide, check that the vacuum hoses are correctly connected.
2. Check the connection condition of the vacuum hoses which can be removed, loosened, clogged possibly. And then check whether there are no folded and damaged vacuum hoses.

MASS AIRFLOW SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

INTAKE AIR TEMPERATURE SENSOR CHECK (Non-Turbo)

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

INTAKE AIR TEMPERATURE SENSOR 1 CHECK (Turbo)

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Turbo) .

MANIFOLD ABSOLUTE PRESSURE SENSOR CHECK (Non-Turbo)

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

ENGINE COOLANT TEMPERATURE SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

THROTTLE POSITION SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

CRANKSHAFT POSITION SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

EGR VALVE (STEPPER MOTOR) CHECK

Required Special Tool

MB991658: Test Harness Set

Scheme 25

1. Check that the operation sound of the stepper motor can be heard from the EGR valve when the ignition switch is turned ON (without starting the engine).
2. If the operation sound cannot be heard, inspect the drive circuit of the stepper motor. NOTE: If the operation sound is not heard, and the circuit is normal, either the stepper motor or the ECM may have failed.

Scheme 26

1. Remove the EGR valve.
2. Measure the resistance between terminal No. 2 and either terminal No. 1 or terminal No. 3 of the connector at the EGR valve. Standard value: 20 - 24 ohms [at 20°C (68°F)]
3. If the resistance is not within the standard, replace the EGR valve.
4. Measure the resistance between terminal No. 5 and either terminal No. 6 or terminal No. 4 of the connector at the EGR valve. Standard value: 20 - 24 ohms [at 20°C (68°F)]
5. If the resistance is not within the standard, replace the EGR valve.

Scheme 27

Scheme 28

Scheme 29

1. Remove the EGR valve.
2. Connect special tool MB991658 to the EGR valve.
3. Connect the battery positive (+) terminal to terminal No. 2. CAUTION: Connecting battery voltage to the EGR valve for a long time could damage the coil.
4. Connect terminals 1 and 3 to the negative (-) terminal of the battery, in order to test whether the stepper motor vibrates (with a slight shudder), indicating that the stepper motor is operating.
5. Connect the battery positive (+) terminal to terminal No. 5. CAUTION: Connecting battery voltage to the EGR valve for a long time could damage the coil.
6. Connect terminals 4 and 6 to the negative (-) terminal of the battery, in order to test whether the stepper motor vibrates (with a slight shudder), indicating that the stepper motor is operating.
7. If vibrations can be felt as a result of the test, the stepper motor is determined to be normal.
8. Using a new gasket, install the EGR valve by tightening its mounting bolts to the specified torque. Tightening torque: 24 ± 3 N.m (212 ± 27 in-lb)

INTAKE AIR TEMPERATURE SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

MANIFOLD ABSOLUTE PRESSURE SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

ACCELERATOR PEDAL POSITION SENSOR CHECK

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

To inspect the sensor, refer to DIAGNOSTIC TROUBLE CODE CHART (2.0L Engine Non-Turbo) , refer to DIAGNOSTIC TROUBLE CODE CHART (2.4L Engine) .

Scheme 30

Scheme 31

Scheme 32

Scheme 33

1. Temporarily tighten each part so that the protrusion of each gasket is positioned as illustrated.
2. Tighten mounting bolts to the specified torque in the order of number shown in the illustration. Tightening torque: 20 ± 2 N.m (15 ± 1 ft-lb)

Scheme 34

Install the EGR valve gasket so that its shaded portion is set as shown in the illustration. Be sure to check which side of the gasket faces outside.

Scheme 35

Scheme 36

Scheme 37

Scheme 38

1. Connect a hand vacuum pump to nipple (A) of the evaporative emission canister and evaporative emission ventilation solenoid assembly.
2. Connect a plug to nipple (B) of the evaporative emission canister and evaporative emission ventilation solenoid assembly.
3. Check air tightness by applying a vacuum with voltage applied directly from the battery to the evaporative emission ventilation solenoid and without applying voltage. EVAP VENT SOLENOID OPERATION Battery voltage Normal condition Applied Vacuum maintained Not applied Vacuum leaks
4. Measure the resistance between the terminals of the solenoid. Standard value: 17 - 21 ohms [at 20°C (68°F)]