Symptom Troubleshooting - Engine - [Mzr 2.5]: Overview Mazda 6 GH рестайлинг

Scheme 1

Scheme 2

Main Relay Operation Inspection

1. Verify that the main relay clicks when the ignition to ON and off.

1. If there is no operation sound, inspect the following

1. Main relay (See «RELAY INSPECTION».)
2. Harness and connector between ignition switch and main relay
3. Harness and connector between PCM terminal 1Q and main relay

Brake override system operation inspection

Note. If the brake override system operates normally after performing the following inspection, the PCM detects DTC P2299:00.

1. Start the engine and run it is idling.
2. Verify that the engine speed becomes less than 1,100 RPM under the following conditions.

1. Neutral (MTX)
2. P or N position (ATX)
3. Engine speed of 1,150 RPM or more other than idle
4. Brake pedal depressed

1. If the engine speed becomes less than 1,100 RPM , clear the PCM DTC using the M-MDS. (System operation is normal.) (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .)
2. If the engine speed does not become less than 1,100 RPM, inspect for the following parts, then repair or replace the malfunctioning part

1. APP sensor (See «ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR 2.5]».)
2. Neutral switch (MTX) (See «NEUTRAL SWITCH INSPECTION [MZR 2.5]».)
3. CPP switch (MTX) (See «CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [MZR 2.5]».)
4. TR switch (ATX) (See «TRANSAXLE RANGE (TR) SWITCH INSPECTION [FS5A-EL]».)
5. Brake switch No. 1 (See «BRAKE SWITCH INSPECTION».)
6. Brake switch No. 2 (See «BRAKE SWITCH INSPECTION».)
7. Communication between PCM and TCM (ATX) (See «FOREWORD [MULTIPLEX COMMUNICATION SYSTEM]».)

Variable Intake Air Control Operation Inspection

1. Start the engine.
2. Inspect the rod operation under the following condition

Rod operation

ROD OPERATION REFERENCE CHART

1. If the rod operation is not as specified, inspect as follows

1. Stop the engine.
2. Connect the M-MDS to the DLC-2.
3. Verify that DTC P0661:00 or P0662:00 is not displayed. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .) If DTC P0661:00 or P0662:00 is shown, perform DTC inspection. (See «DTC P0661:00 [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .) (See «DTC P0662:00 [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .)
4. Inspect the variable intake air solenoid valve. (See «VARIABLE INTAKE AIR SOLENOID VALVE INSPECTION [MZR 2.5]».)

1. If the variable intake air solenoid valve is not normal, replace the variable intake air solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.5]».)
2. If the variable intake air solenoid valve is normal, inspect the following

1. Vacuum hose and vacuum chamber for looseness or damage
2. Shutter valve actuator (See «VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR INSPECTION [MZR 2.5]».)
3. Shutter valve stuck open or closed

Variable Tumble Control Operation Inspection

1. Connect the M-MDS to the DLC-2.
2. Access the PCM PID ECT. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .)
3. Verify that ECT PID is between 60 °C {140 °F} and 67 °C {153 °F}.
4. Start the engine.
5. Inspect rod operation under the following conditions

Rod operation

ROD OPERATION REFERENCE CHART

1. If the rod operation is not specified, inspect as follows

1. Verify that DTC P2009:00 or P2010:00 is not displayed. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .) If DTC P2009:00 or P2010:00 are shown, perform DTC inspection. (See «DTC P2009:00 [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .) (See «DTC P2010:00 [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .)
2. Inspect the variable tumble solenoid valve. (See «VARIABLE TUMBLE SOLENOID VALVE INSPECTION [MZR 2.5]».)

1. If the variable tumble solenoid valve is not normal, replace the variable tumble solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.5]».)
2. If the variable tumble solenoid valve is normal, inspect the following

1. Vacuum hose and vacuum chamber for looseness or damage
2. Shutter valve actuator (See «VARIABLE TUMBLE SHUTTER VALVE ACTUATOR INSPECTION [MZR 2.5]».)
3. Shutter valve stuck open or closed

Fuel Pump Operation Inspection

1. Remove the fuel-filler cap.
2. Switch the ignition to ON.
3. Turn the fuel pump relay from off to on using the FP PID and inspect if the operation sound is heard. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.5]»(/mazda/6/gh-2009-2013/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-25) .) If no operation sounds is heard, proceed to next step.
4. Measure voltage at wiring harness side fuel pump terminal B

Specification

1. B+ (Ignition at on)

1. If the voltage is as specified, inspect the following: Fuel pump continuity Fuel pump ground Wiring harness between fuel pump relay and PCM terminal 1BG
2. If not as specified, inspect the following

1. Fuel pump relay (See «RELAY INSPECTION».)
2. Wiring harness connector (Main relays-Fuel pump relay-Fuel pump)

Variable Valve Timing Control System Operation Inspection

When idling cannot be continued

1. Remove the OCV and verify that the spool valve is at maximum retard position.
2. Connect the OCV.
3. Switch the ignition to ON.
4. Verify that the spool valve is at maximum retard position. If the spool valve is stuck in the advance direction, inspect for the following: Short circuit in wiring harnesses or connectors between OCV and PCM
5. Inspect the variable valve timing actuator. (See «VARIABLE VALVE TIMING ACTUATOR INSPECTION [MZR 2.5]».)

When idling can be continued

1. Disconnect OCV connector.
2. Warm up the engine and idle it.
3. Apply battery voltage to the OCV and verify that the engine idles roughly or stalls. If the engine idles roughly or staffs, inspect the timing chain component (valve timing deviation). If the engine does not idle roughly or stalls, go to the next step.
4. Remove the OCV and perform spool valve operation inspection. (See «OIL CONTROL VALVE (OCV) INSPECTION [MZR 2.5]».) If not as specified, inspect the following: OCV (See «OIL CONTROL VALVE (OCV) INSPECTION [MZR 2.5]».) Harnesses and connectors between OCV and PCM open or short If as specified, inspect the following hydraulic passages for clogging or leakage or both: Oil pressure switch-OCV OCV-Camshaft Camshaft internal passage
5. If they are normal, replace the camshaft pulley (with built-in variable valve timing actuator).

EVAP system test description

1. The EVAP system test finds gas leaks or blockage of EVAP system using the changes of the fuel tank pressure.

1. This test starts after sending an on-demand test signal from the M-MDS to the PCM.
2. This test consists of three stages, and each stage is performed automatically as follows

Stage 1 test (Test for large leak or blockage)

1. M-MDS send the stage 1 test start signal to the PCM.
2. PCM controls the CV solenoid valve and purge solenoid valve to control the tank pressure to the targeted value.
3. M-MDS detect the large leak or the purge line blockage if the tank pressure does not arrive at the target vacuum in specified period.

Scheme 3

Stage 2 test (Test for small leak)

1. When fuel tank pressure arrived at the targeted pressure at stage 1 test, M-MDS send the stage 2 test signal to the PCM to turn off the purge solenoid to keep the tank pressure.
2. M-MDS detect the small leak if the tank pressure can not keep with the target in specified period.

Scheme 4

Stage 3 test (Test for blockage)

1. M-MDS send the stage 3 test signal to the PCM to turn off the CV solenoid for check the blockage of EVAP system.
2. M-MDS detect blockage of the CV solenoid valve or air filter if the tank pressure does not arrive at the target (atmosphere).

Scheme 5

See also:
• DTC TABLE [MZR 2.5]