Mazda 2: Engine Control System Operation Inspection

Mazda 2 2007-2014 Service Manual / Engine / Engine Control System Operation Inspection

Main Relay Operation Inspection

1. Verify that the main relay clicks when the ignition switch is turned to the ON position, then off.

Intake Manifold Vacuum Inspection

1. Verify the air intake hoses are installed properly.

2. Start the engine and idle it.

3. Disconnect the vacuum hose between the intake manifold and purge solenoid valve from the purge solenoid valve side.

4. Connect a vacuum gauge to the vacuum hose and measure the intake manifold vacuum. (See INTAKE MANIFOLD VACUUM INSPECTION).

NOTE:

Drive-by-wire Control System Inspection

Engine coolant temperature compensation inspection

1. Connect the M-MDS to the DLC-2.

2. Access the following PIDs: (See ON-BOARD DIAGNOSTIC TEST).

3. Verify that the engine is cold, then start the engine.

4. Verify that the engine speed decreases as the engine warms up.

Load compensation inspection

1. Start the engine and idle it.

2. Connect the M-MDS to the DLC-2.

3. Verify that P0506:00 or P0507:00 is not displayed. (See ON-BOARD DIAGNOSTIC TEST).

4. Access the RPM PID. (See ON-BOARD DIAGNOSTIC TEST).

NOTE:

5. Verify that the engine speed is within the specification under each load condition.

Idle-up speed

Mazda 2. ENGINE CONTROL SYSTEM OPERATION INSPECTION

Throttle position (TP) sweep inspection

1. Connect the M-MDS to the DLC-2.

2. Switch the ignition to ON.

3. Verify that none of the following DTCs are displayed: (See ON-BOARD DIAGNOSTIC TEST).

4. Access the TP REL PID. (See ON-BOARD DIAGNOSTIC TEST).

5. Verify that the PID reading is within the CTP value. (See PCM INSPECTION).

6. Gradually depress the throttle pedal and verify that the PID reading increases accordingly.

7. Fully depress the throttle pedal and verify that the PID reading is within WOT value. (See PCM INSPECTION).

Brake override system operation inspection

NOTE:

1. Start the engine and idle it.

2. Verify that the engine speed is below 1,100 rpm while the all of the following conditions are met.

Variable Tumble Control Operation Inspection

1. Connect the M-MDS to the DLC-2.

2. Perform the KOEO self test using M-MDS. (See KOEO/KOER SELF TEST).

3. Verify that DTC P2004:00, DTC P2006:00 and DTC P2008:00 are not displayed.

4. Switch the ignition to ON (engine off).

5. Monitor ECT1, RPM and IMRC PIDs. (See ON-BOARD DIAGNOSTIC TEST).

6. Verify that ECT1 PID is 60

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