Symptom Troubleshooting - Engine: Overview Mazda RX-8 I рестайлинг

Scheme 1

Scheme 2

Main Relay Operation Inspection

1. Verify that the main relay clicks when the ignition switch is turned to the ON position and off. If there is no operation sound, inspect the following: Main relay (See «RELAY INSPECTION»(ref-367627-S03580534092010072700000).) Wiring harness and connector between battery and main relay terminal A. Wiring harness and connector between PCM terminal 1 AW, 1 BE and main relay terminal C. Wiring harness and connector between PCM terminal 1Q and main relay terminal E. Wiring harness and connector between PCM terminal 1AY and engine fuse.

Variable Dynamic Effect Intake-air (VDI) Operation Inspection (13B-MSP(high-power))

1. Connect the M-MDS to the DLC-2.
2. Access the RPM PID.
3. Start the engine.
4. 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 P0076 or P0077 is not displayed. If DTC P0076 or P0077 is shown, perform DTC inspection. (See «DTC TABLE [13B-MSP]»(/mazda/rx-8/i-2008-2012/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-13bmsp) .)
4. Inspect the VDI solenoid valve. (See «VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE INSPECTION [13B-MSP]»(ref-367618-S41068915522010072700000).) If the VDI solenoid valve is not normal, replace the VDI solenoid valve. If the VDI solenoid valve is normal, inspect the following: Vacuum hose and vacuum chamber for looseness or damage Shutter valve actuator (See «VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR INSPECTION [13B-MSP]»(ref-367618-S37195907872010072700000).) Shutter valve stuck open or closed

Secondary Shutter Valve (SSV) Operation Inspection

1. Connect the M-MDS to the DLC-2.
2. Access the RPM PID.
3. Start the engine.
4. 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 P0661, P0662 or P2070 is not displayed. If DTC P0661, P0662 or P2070 are shown, perform DTC inspection. (See «DTC TABLE [13B-MSP]»(/mazda/rx-8/i-2008-2012/remont/testing-diagnostics/#on-board-diagnostic-engine-control-system-13bmsp) .)
2. Inspect the SSV solenoid valve. (See «SECONDARY SHUTTER VALVE (SSV) SOLENOID VALVE INSPECTION [13B-MSP]»(ref-367618-S18783596662010072700000).) If the SSV solenoid valve is not normal, replace the SSV solenoid valve. If the SSV solenoid valve is normal, inspect the following: Vacuum hose and vacuum chamber for looseness or damage Shutter valve actuator (See «SECONDARY SHUTTER VALVE (SSV) ACTUATOR INSPECTION [13B-MSP]»(ref-367618-S09213184462010072700000).) Shutter valve stuck open or closed

Jet Air Fuel Mixing System Operation Inspection

Note. When the hose and/or nozzle of the jet air fuel mixing system are clogging, the engine has rough-idle.

1. Verify that the jet air fuel mixing system hose is connected properly, according to INTAKE-AIR SYSTEM VACUUM HOSE ROUTINE DIAGRAM. (See «INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [13B-MSP]»(ref-367618-S19617771382010072700000).) If the hose is not connected properly, connect the hose properly.
2. Verify that there is no collapse, crack and divide in each intake-air system hoses. If there is collapse, crack or divide, repair or replace suspected part.
3. Verify that there is no collapse, crack and divide between air hose and jet air fuel mixing pipe. If there is collapse, crack or divide, repair or replace suspected part.
4. Perform the Intake Manifold Vacuum Inspection. (See «INTAKE MANIFOLD VACUUM INSPECTION»(ref-367615-S11607466222010072700000) ) If there is malfunction, repair or replace suspected part, according to inspection results.
5. Connect the M-MDS to DLC-2.
6. Monitor following PIDs. MAF (MAF sensor) ETC_DSD (target throttle valve opening angle)
7. Measure the air flow amount for jet air fuel mixing nozzle according to following "Nozzle air flow amount measurement procedure". If there is no air flow, remove the objection for following points; Jet air fuel mixing nozzle Hose between jet air fuel mixing nozzle and air hose

Fuel Injector (FP) (RP) Operation Inspection

1. Start the engine and let it at idle.
2. Inspect fuel injector control signal wave profile at the following PCM terminals. (See «PCM INSPECTION [13B-MSP]»(ref-367617-S11241072532010072700000).) Terminal 2BB (FP) Terminal 2BD (RP)
3. If not as specified, inspect the following and repair or replace defective parts. Front rotor: Open circuit in wiring between fuel injector (FP) terminal A and main relay terminal C Open or short circuit in wiring between fuel injector (FP) terminal B and PCM terminal 2BB Open or short internal circuit or fuel injector (FP) Rear rotor: Open circuit in wiring between fuel injector (RP) terminal A and main relay terminal C Open or short circuit in wiring between fuel injector (RP) terminal B and PCM terminal 2BD Open or short internal circuit of fuel injector (RP)

Fuel Injector (FS) (RS) Operation Inspection

1. Connect the M-MDS to the DLC-2.
2. Start the engine and let it at idle.
3. Access the RPM PID.
4. Verify that the fuel injector control wave is not outputted at the following PCM terminal. (See «PCM INSPECTION [13B-MSP]»(ref-367617-S11241072532010072700000).) Terminal 2BC (FS) Terminal 2AZ (RS)
5. If the fuel injector control signal is outputted, inspect the following and repair or replace defective parts. MAF sensor TP sensor IAT sensor
6. Inspect the fuel injector control signal wave profile at the following PCM terminals while the RPM PID is 5,000 RPM or over. (See «PCM INSPECTION [13B-MSP]»(ref-367617-S11241072532010072700000).) Terminal 2BC (FS) Terminal 2AZ (RS)
7. If not as specified, inspect the following and repair or replace defective parts. Front rotor: Open circuit in wiring between fuel injector (FS) terminal A and main relay terminal C Open or short circuit in wiring between fuel injector (FS) terminal B and PCM terminal 2BC Open or short internal circuit of fuel injector (FS) Rear rotor: Open circuit in wiring between fuel injector (RS) terminal A and main relay terminal C Open or short circuit in wiring between fuel injector (RS) terminal B and PCM terminal 2AZ Open or short internal circuit or fuel injector (RS)

Fuel Pump Operation Inspection

1. Short the check connector terminal F/P to the body GND using a jumper wire.
2. Remove the fuel-filler cap.
3. Turn the ignition switch to the ON position.
4. Verify that the fuel pump operation sound is heard. If no operation sound heard, proceed to next step.
5. Measure the voltage at the wiring harness side fuel pump connector terminal B. Specification 8.0-11.5 V (Ignition switch at on) If the voltage is as specified, inspect the following: Fuel pump continuity Fuel pump GND Wiring harness between fuel pump relay and PCM terminal 1H If not as specified, inspect the following: Fuel pump relay Fuel pump resister Wiring harness and connector (Main relay - fuel pump relay-fuel pump resister - fuel pump)

Fuel Pump Speed Control Operation Inspection

1. Perform the fuel pump operation inspection.
2. Verify that fuel pump speed control relay operation sound is heard, while cranking the engine. If operation sound is not heard, inspect the following: Fuel pump speed control relay Wiring harnesses and connectors (Main relay-fuel pump speed control relay-PCM terminal 1K)
3. Remove the fuel-filler cap.
4. Verify that the fuel pump unit operation sound frequency at cranking is higher than during idle. If it cannot verified, inspect for the following: Fuel pump resister Fuel pump speed control relay Wiring harnesses and connectors (open circuit at fuel pump relay terminal C-fuel pump terminal B)

Variable Fresh Air Duct (VFAD) Control System Operation Inspection

1. Connect the M-MDS to the DLC-2.
2. Access the RPM PID.
3. Start the engine.
4. Inspect shutter valve operation under the following conditions. VFAD shutter valve operation VFAD SHUTTER VALVE OPERATION REFERENCE CHART Engine speed 5,250 RPM Below Above Shutter valve Close Open If the shutter valve operation is not as specified, inspect VFAD solenoid valve. (See «VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE INSPECTION [13B-MSP]»(ref-367618-S41068915522010072700000).) If the VFAD solenoid valve is not normal, replace VFAD solenoid valve. If the VFAD solenoid valve is normal, inspect the following: Open or short circuit PCM terminal 1AE and VFAD solenoid valve terminal B Open or short circuit main relay and VFAD solenoid valve terminal B Vacuum hose looseness or damage Vacuum chamber cracked or damaged Shutter valve actuator (See «VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR INSPECTION [13B-MSP]»(ref-367618-S37195907872010072700000).) Shutter valve is stuck open or closed.

See also:
• DTC TABLE [13B-MSP]