Symptom Troubleshooting [Engine Control System [Mzr 2.3 Disi Turbo]]: Overview Mazda 3 BM

Engine Control System Symptom Troubleshooting Wiring Diagram [MZR 2.3 DISI Turbo] (1 Of 2). Scheme 240

Engine Control System Symptom Troubleshooting Wiring Diagram [MZR 2.3 DISI Turbo] (2 Of 2). Scheme 241

Main Relay Operation Inspection

1. Verify that the main relay clicks when the ignition is switched to ON, then to off. If there is no operation sound, inspect the following: Main relay (See «RELAY INSPECTION [MZR 2.0, MZR 2.5, MZR 2.3 DISI TURBO]»(ref-579363-S33983071402013100700000).) Wiring harness and connector between battery positive terminal and main relay terminal A Wiring harness and connector between PCM terminal 1AT and main relay terminal B

Brake override system operation inspection

Note. If the brake override system operates normally after performing the following inspections, the PCM stores 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. Neutral Engine speed of 1,150 rpm or more other than idle Brake pedal depressed If the engine speed becomes less than 1,100 rpm, clear the PCM DTC using the M-MDS. (System operation is normal.) If the engine speed does not become less than 1,100 rpm, inspect for the following parts, then repair or replace the malfunctioning part: APP sensor (See «ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR 2.3 DISI TURBO]»(ref-579394-S06780705842013100700000).) Neutral switch (See «NEUTRAL SWITCH INSPECTION [MZR 2.3 DISI TURBO]»(ref-579394-S02653365532013100700000).) Clutch switch (See «CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [MZR 2.3 DISI TURBO]»(ref-579394-S00548296202013100700000).) Brake switch No.1 (See «BRAKE SWITCH INSPECTION»(ref-579367-S06883533672013100700000).) Brake switch No.2 (See «BRAKE SWITCH INSPECTION»(ref-579367-S06883533672013100700000).)

Variable Swirl System Operation Inspection

1. Access the ECT PID using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .)
2. Verify that the ECT PID is below 0 °C {32 °F} .
3. Start the engine.
4. Inspect the rod operation under the following conditions: Rod operation Engine speed 3,250 rpm Below Above Shutter valve actuator Operate Not operate

If the rod operation is not specified, inspect as follows

1. Perform the KOER self test using the M-MDS and verify that the DTCs P2004:00, P2006:00, P2009:00 or P2010:00 is not displayed. (See «KOEO/KOER SELF TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo).) If the DTC P2004:00, P2006:00, P2009:00 or P2010:00 is displayed, perform DTC inspection. (See «DTC P2004:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo).) (See «DTC P2006:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo).) (See «DTC P2009:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo).) (See «DTC P2010:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo).) If simulation function of M-MDS is used: Switch the ignition to ON (engine off). Turn the variable swirl solenoid valve from off to on using the IMRC PID and verify that the operation sound of the solenoid valve is heard. If the operation sound is not heard, replace the variable swirl solenoid valve. (See «VARIABLE SWIRL SOLENOID VALVE INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S24435884572013100700000).) If the operation sound is not heard, inspect the following: Vacuum hose and vacuum chamber for looseness or damage Variable swirl shutter valve actuator (See «VARIABLE SWIRL SHUTTER VALVE ACTUATOR INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S17716256712013100700000).) Check valve is stuck open or closed. Shutter valve cannot move smoothly. If simulation function of M-MDS is not used: Inspect the variable swirl solenoid valve. (See «VARIABLE SWIRL SOLENOID VALVE INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S24435884572013100700000).) If the variable swirl solenoid valve is not normal, replace the variable swirl solenoid valve. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.3 DISI TURBO]»(ref-579390-S14083409562013100700000).) If the variable swirl solenoid valve is normal, inspect the following: Vacuum hose and vacuum chamber for looseness or damage Variable swirl shutter valve actuator (See «VARIABLE SWIRL SHUTTER VALVE ACTUATOR INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S17716256712013100700000).) Check valve is stuck open or closed. Shutter valve cannot move smoothly.

Fuel Pump Operation Inspection

If simulation function of M-MDS is not used

1. Remove the fuel-filler cap.
2. Switch the ignition to ON (engine off).
3. Turn the fuel pump relay from off to on using the FP PID and inspect if the operation sound of the fuel pump is heard. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .) If no operation sound is heard, proceed to the next step.
4. Measure the voltage at the wiring harness side fuel pump unit terminal B with the FP PID turned on. If the voltage is as specified, inspect the following: Fuel pump continuity Fuel pump ground Wiring harness between fuel pump relay and PCM terminal 1H If not as specified, inspect the following: Fuel pump relay Fuel pump speed control relay Wiring harness connector (Battery-Fuel pump relay-Fuel pump resister-Fuel pump unit-Ground) Specification 8.0-11.5 V (Ignition switch at ON)

If simulation function of M-MDS is not used

1. Short the check connector terminal F/P to body ground using a jumper wire.
2. Remove the fuel-filler cap.
3. Switch the ignition to ON (engine off).
4. Verify that the fuel pump operation sound is heard. If no operation sound is heard, proceed to the next step.
5. Measure the voltage at wiring harness side fuel pump unit connector terminal B. If the voltage is as specified, inspect the following: Fuel pump continuity Fuel pump ground Wiring harness between fuel pump relay and PCM terminal 1H If not as specified, inspect the following: Fuel pump relay (See «RELAY INSPECTION [MZR 2.0, MZR 2.5, MZR 2.3 DISI TURBO]»(ref-579363-S33983071402013100700000).) Fuel pump speed control relay (See «RELAY INSPECTION [MZR 2.0, MZR 2.5, MZR 2.3 DISI TURBO]»(ref-579363-S33983071402013100700000).) Wiring harness connector (Battery-Fuel pump relay-Fuel pump resister-Fuel pump unit-Ground) Specification 8.0-11.5 V (Ignition switch at on)

Wastegate Control System Operation Inspection

If simulation function of M-MDS is used

1. Start the engine and run it is idling.
2. Disconnect the hose between the wastegate control solenoid valve and the intake pipe.
3. Put a finger to the wastegate control solenoid valve and verify that there is no pressure applied. If there is pressure, inspect the following: Wiring harness and connectors (Wastegate control solenoid valve-PCM terminal 2AA) Wastegate control solenoid valve (stuck open) (See «WASTEGATE CONTROL SOLENOID VALVE INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S23868107922013100700000).)
4. Warm up the engine to normal operating temperature.
5. Verify that the DTC P0245:00 or P0246:00 are shown. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .) If the DTC P0245:00 or P0246:00 are shown, perform the DTC inspection. (See «DTC P0245:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .) (See «DTC P0246:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .)
6. Access the WGC PID using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .)
7. Put a finger to the wastegate control solenoid valve with Step 2 condition and verify that there is vacuum applied when set the present to 100% duty value of the wastegate control solenoid valve using the WGC PID simulation function. If there is no vacuum, inspect the following: Increase the duty value of the wastegate control solenoid valve using the WGC PID simulation function and inspect if the operation sound of the solenoid valve is heard. If the operation sound is heard, inspect for loose or damaged vacuum hoses. (Wastegate actuator-Wastegate control solenoid valve-Intake hose) If the operation sound is not heard, inspect the wastegate control solenoid valve. (See «WASTEGATE CONTROL SOLENOID VALVE INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S23868107922013100700000).)
8. Warm up the engine to normal operating temperature.
9. Access the WGC and APP PIDs using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .)
10. Run the engine with the APP PID above 30% and verify that the WGC PID value increases from 0%. If the WGC PID is 0%, inspect the APP PID. (See «PCM INSPECTION [MZR 2.3 DISI TURBO]»(ref-579394-S08257791092013100700000).)

If simulation function of M-MDS is not used

1. Start the engine and run it is idling.
2. Disconnect the hose between the wastegate control solenoid valve and the intake pipe.
3. Put a finger to the wastegate control solenoid valve and verify that there is no pressure applied. If there is pressure, inspect the following: Wiring harness and connectors (Wastegate control solenoid valve-PCM terminal 2AA) Wastegate control solenoid valve (stuck open) (See «WASTEGATE CONTROL SOLENOID VALVE INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S23868107922013100700000).)
4. Warm up the engine to normal operating temperature.
5. Verify that the DTC P0245:00 or P0246:00 are shown. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .) If the DTC P0245:00 or P0246:00 are shown, perform the DTC inspection. (See «DTC P0245:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .) (See «DTC P0246:00 [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .)
6. Warm up the engine to normal operating temperature.
7. Access the WGC and APP PIDs using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]»(/mazda/3/bm-2013-2016/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-mzr-23-disi-turbo) .)
8. The hose between the wastegate control solenoid valve and intake pipe is disconnected.
9. Run the engine with the APP PID above 30% and verify that the WGC PID value increases from 0% and there is pressure applied. If the WGC PID is 0%, inspect the TP REL PID. (See «PCM INSPECTION [MZR 2.3 DISI TURBO]»(ref-579394-S08257791092013100700000).) If there is no pressure applied, inspect for the following: Wastegate control solenoid valve (stuck closed) (See «WASTEGATE CONTROL SOLENOID VALVE INSPECTION [MZR 2.3 DISI TURBO]»(ref-579390-S23868107922013100700000).) Hose connection (Intake hose (turbocharger compressor downstream side)-Wastegate actuator-Intake hose (turbocharger compressor upstream side))

See also:
• ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI TURBO]
• REFRIGERANT PRESSURE CHECK