Contents Section: Testing & Diagnostics All sections

Engine Control System [Skyactiv-G 2.0]: Diagnosis Mazda 3 BL рестайлинг

Testing & Diagnostics 25 illustrations ~2542 words

Resistance inspection

WARNINGWhen the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.

Scheme 179

Scheme 179

Scheme 180

Scheme 180
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000).)
  4. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0]»(ref-520423-S34603428342013010300000).)
  5. Remove the air cleaner assembly. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000).)
  6. Disconnect the ECT sensor No.1 connector.
  7. Remove the ECT sensor No.1. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).)
  8. Place the ECT sensor No.1 in water with a thermometer, and heat the water gradually. (Scheme 179): Inspecting ECT Sensor No.1
  9. Measure the resistance between ECT sensor No.1 terminals A and B. (Scheme 180): Identifying ECT Sensor No.1 Terminals If not as specified, replace the ECT sensor No.1. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).) SPECIFICATION ECT (°C {°F}) Resistance (Kilohms) 20 {68} Approx. 2.45 80 {176} Approx. 0.318
WARNINGWhen the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.

Scheme 181

Scheme 181

Scheme 182

Scheme 182
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000).)
  4. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0]»(ref-520423-S34603428342013010300000).)
  5. Remove the air cleaner assembly. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000).)
  6. Remove the battery tray and PCM component. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  7. Disconnect the short cord connector of ECT sensor No.2. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).)
  8. Set the PCM harness protector aside. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  9. Remove the bolts from the bracket. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).)
  10. Lift up the bracket.
  11. Disconnect the ECT sensor No.2 connector. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).)
  12. Remove the ECT sensor No.2 and water pipe from the bracket. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).)
  13. Remove the ECT sensor No.2 from the water pipe. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).)
  14. Place the ECT sensor No.2 in water with a thermometer, and heat the water gradually. (Scheme 181): Measuring Resistance Between ECT Sensor No.2 Terminals
  15. Measure the resistance between ECT sensor No.2 terminals A and B. (Scheme 182): Identifying ECT Sensor No.2 Terminals If not as specified, replace the ECT sensor No.2. (See «ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S17920872502013010300000).) SPECIFICATION ECT (°C {°F}) Resistance (Kilohms) 20 {68} Approx. 2.45 80 {176} Approx. 0.318

Visual Inspection

  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  3. Disconnect the MAF sensor/IAT sensor No.1 connector.
  4. Remove the MAF sensor/IAT sensor No.1. (See «MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S40773341122013010300000) .)
  5. Visually inspect the MAF sensor for the following: Damage, cracks, soiling Rusted sensor terminal Bent sensor terminal If there is any malfunction, repair or replace the MAF sensor/IAT sensor No.1. (See «MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S40773341122013010300000) .)

Scheme 183

Scheme 183: Voltage Inspection

Scheme 184

Scheme 184
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Remove the MAF sensor/IAT sensor No.1 without disconnect the connector. (See «MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S40773341122013010300000).)
  4. Reconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  5. Connect the M-MDS to the DLC-2. (Scheme 183): Identifying DLC-2 Location
  6. Switch the ignition to ON.
  7. As the air gradually approaches the MAF detection part of the MAF sensor/IAT sensor No.1, verify that the MAF sensor output voltage (PID: MAF) varies. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) (Scheme 184): MAF Sensor/IAT Sensor No.1 If not as verified, replace the MAF sensor/IAT sensor No.1. (See «MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S40773341122013010300000).)

Note. Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No.1.

Scheme 185

Scheme 185: Resistance inspection
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Disconnect the MAF sensor/IAT sensor No.1 connector.
  4. Measure the resistance between MAF sensor/IAT sensor No.1 terminals A and B. (Scheme 185): Identifying MAF Sensor/IAT Sensor No.1 Terminals If not as specified, replace the MAF sensor/IAT sensor No.1. (See «MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S40773341122013010300000).) SPECIFICATION IAT (°C {°F}) Resistance (Kilohms) -20 {-4} 13.7-16.6 20 {68} 2.49-2.79 60 {140} 0.622-0.703

Note. Because the IAT sensor No.2 is integrated in the MAP sensor, replacing the IAT sensor No.2 includes replacement of the MAP sensor/IAT sensor No.2.

Scheme 186

Scheme 186: Resistance inspection
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Disconnect the MAP sensor/IAT sensor No.2 connector.
  4. Remove the MAP sensor/IAT sensor No.2. (See «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S09157530642013010300000).)
  5. Measure the resistance between MAP sensor/IAT sensor No.2 terminals A and B. (Scheme 186): Identifying MAP Sensor/IAT Sensor No.2 Terminals If not as specified, replace the MAP sensor/IAT sensor No.2. (See «MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S09157530642013010300000).) SPECIFICATION IAT (°C {°F}) Resistance (Kilohms) 0 {32} Approx. 5.9 20 {68} 2.375-2.625 80 {176} Approx. 0.323 130 {266} Approx. 0.0893

Voltage Inspection

Note. Because the BARO sensor is integrated in the PCM, replacing the BARO sensor includes replacement of the PCM.

Scheme 187

Scheme 187: Voltage Inspection

Scheme 188

Scheme 188
  1. Connect the M-MDS to the DLC-2. (Scheme 187): Identifying DLC-2 Location
  2. Switch the ignition to ON.
  3. Verify that the BARO sensor output voltage (PID: BARO) is within the specification. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) (See «PCM INSPECTION [SKYACTIV-G 2.0]»(ref-520417-S31406391912013010300000).) If not as specified, replace the PCM. (See «PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S19808320362013010300000).) (Scheme 188): BARO Sensor Output Voltage Graph
CAUTIONThe inspection cannot be performed with this method correctly if there is a malfunction of the APP sensor or throttle valve actuator. Verify that no DTCs related to the APP sensor or throttle valve actuator are stored before the inspection.

Note. The TP sensor cannot be removed as a single unit. When replacing the TP sensor, replace it together with the throttle body as a single unit.

Scheme 189

Scheme 189

Scheme 190

Scheme 190
  1. Connect the M-MDS to the DLC-2. (Scheme 189): Identifying DLC-2 Location
  2. Switch the ignition to ON.
  3. Verify that the TP sensor output voltage (PID: TP1, TP2) varies according to the accelerator opening angle when the accelerator opening angle is gradually increased. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) If verified, go to the next step. If not as verified, replace the throttle body. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000).)
  4. Verify that the TP sensor output voltage (PID: TP1, TP2) is within the specification when the accelerator pedal is depressed and not depressed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) (See «PCM INSPECTION [SKYACTIV-G 2.0]»(ref-520417-S31406391912013010300000).) If not as specified, replace the throttle body. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000).) (Scheme 190): TP Sensor Output Voltage Graph

Note. Because the APP sensor is integrated in the accelerator pedal, replacing the APP sensor includes replacement of the accelerator pedal.

Scheme 191

Scheme 191: Voltage Inspection

Scheme 192

Scheme 192
  1. Connect the M-MDS to the DLC-2. (Scheme 191): Identifying DLC-2 Location
  2. Switch the ignition to ON.
  3. Verify that the APP sensor output voltage (PID: APP1, APP2) increases according to the increase in the accelerator opening angle when the accelerator opening angle is gradually increased. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) If verified, go to the next step. If not as verified, replace the accelerator pedal. (See «ACCELERATOR PEDAL REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S16308587892013010300000).)
  4. Verify that the APP sensor output voltage (PID: APP1, APP2) is within the specification when the accelerator pedal is depressed and not depressed. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) (See «PCM INSPECTION [SKYACTIV-G 2.0]»(ref-520417-S31406391912013010300000).) If not as specified, replace the accelerator pedal. (See «ACCELERATOR PEDAL REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S16308587892013010300000).) (Scheme 192): APP Sensor Output Voltage Graph

Note. The fuel pressure sensor cannot be removed as a single unit. When replacing the fuel pressure sensor, replace it together with the fuel distributor as a single unit.

Scheme 193

Scheme 193: Voltage Inspection

Scheme 194

Scheme 194
  1. Connect the M-MDS to the DLC-2. (Scheme 193): Identifying DLC-2 Location
  2. Switch the ignition to ON.
  3. Verify that the fuel pressure sensor output voltage (PID: FUEL_PRES) is within the specification. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) (See «PCM INSPECTION [SKYACTIV-G 2.0]»(ref-520417-S31406391912013010300000).) If not as specified, replace the fuel distributor. (See «FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520421-S04311142652013010300000).) (Scheme 194): Fuel Pressure Sensor Output Voltage Graph

A/F Sensor Heater Inspection

WARNINGA hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.

Scheme 195

Scheme 195
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Disconnect the A/F sensor connector.
  4. Measure the resistance between A/F sensor terminals A and E. (Scheme 195): Identifying A/F Sensor Terminals If not as specified, replace the A/F sensor. (See «AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S34644827202013010300000).) A/F sensor heater resistance 1-10 ohms [normal temperature]

HO2S Heater Inspection

WARNINGA hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.

Scheme 196

Scheme 196
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Lift up the vehicle.
  4. Remove the clip from the member. (See «HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S19972073702013010300000).)
  5. Disconnect the HO2S connector.
  6. Measure the resistance between HO2S terminals C and D. (Scheme 196): Identifying HO2S Terminals If not as specified, replace the HO2S. (See «HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S19972073702013010300000).) HO2S heater resistance 2-50 ohms [normal temperature]
CAUTIONWhen foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CKP sensor when replacing. Do not assemble the CKP sensor or change the installation position using any method other than the following. Otherwise, it could negatively affect engine controls, such as the ignition timing and fuel injection.
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  3. Lift up the vehicle.
  4. Perform the following procedure for easier access. Remove the aerodynamic under cover No.2. (See «AERODYNAMIC UNDER COVER NO.2 REMOVAL/INSTALLATION»(ref-520448-S37186396192013010300000) .) Remove the front splash shield (RH). (See «SPLASH SHIELD REMOVAL/INSTALLATION»(ref-520448-S04813808932013010300000) .)
  5. Disconnect the CKP sensor connector.
  6. Remove the CKP sensor. (See «CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S27742628252013010300000) .)
  7. Verify that there are no metal shavings on the sensor. If there is a malfunction, remove any metal shavings that are adhering.
CAUTIONWhen foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CKP sensor when replacing. Do not assemble the CKP sensor or change the installation position using any method other than the following. Otherwise, it could negatively affect engine controls, such as the ignition timing and fuel injection. If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

Scheme 197

Scheme 197
  1. Idle the engine.
  2. Measure the CKP sensor output voltage using the oscilloscope. If not as specified, replace the CKP sensor. (See «CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S27742628252013010300000).) (Scheme 197): Identifying CKP Sensor Connector Terminals Terminal Voltage (V) Condition A Approx. 5.0 Under any condition B Below 1.0 Under any condition C Above 4.5 High output (1) Below 0.8 Low output (1) (1) Output voltage varies with crankshaft rotation.
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000) .)
  4. Remove the intake manifold. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000) .)
  5. Disconnect the intake CMP sensor connector.
  6. Remove the intake CMP sensor. (See «CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S09850392372013010300000) .)
  7. Verify that there are no metal shavings on the intake CMP sensor. If there is a malfunction, remove any metal shavings that are adhering.
CAUTIONWhen replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control. If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

Scheme 198

Scheme 198
  1. Idle the engine.
  2. Measure the intake CMP sensor output voltage using the oscilloscope. If not as specified, replace the intake CMP sensor. (See «CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S09850392372013010300000).) (Scheme 198): Identifying Intake CMP Sensor Connector Terminals Terminal Voltage (V) Condition A Above 4.8 High output (1) Below 0.8 Low output (1) B Below 1.0 Under any condition C B+ Under any condition (1) Output voltage varies with camshaft rotation.
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000) .)
  4. Disconnect the exhaust CMP sensor connector.
  5. Remove the exhaust CMP sensor. (See «CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S09850392372013010300000) .)
  6. Verify that there are no metal shavings on the exhaust CMP sensor. If there is a malfunction, remove any metal shavings that are adhering.
CAUTIONWhen replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control. If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

Scheme 199

Scheme 199
  1. Idle the engine.
  2. Measure the exhaust CMP sensor output voltage using the oscilloscope. If not as specified, replace the exhaust CMP sensor. (See «CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S09850392372013010300000).) (Scheme 199): Identifying Exhaust CMP Sensor Connector Terminals Terminal Voltage (V) Condition A Above 4.8 High output (1) Below 0.8 Low output (1) B Below 1.0 Under any condition C B+ Under any condition (1) Output voltage varies with camshaft rotation.

Scheme 200

Scheme 200: KNOCK SENSOR (KS) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000).)
  4. Remove the intake manifold. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000).)
  5. Disconnect the KS connector.
  6. Remove the KS. (See «KS INSTALLATION NOTE»(ref-520417-S22932429322013010300000).) (Scheme 200): Identifying Knock Sensor And Bolt With Torque Specifications
  7. Install in the reverse order of removal.

Scheme 201

Scheme 201: KS Installation Note
  1. Verify that there is no foreign matter caught between the KS unit and cylinder block.
  2. The direction of the KS connector is within the 90-degree angle range shown in the figure. (Scheme 201): Identifying KS Proper Installation

Scheme 202

Scheme 202: Resistance Inspection
  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000).)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000).)
  4. Remove the intake manifold. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520422-S09166380872013010300000).)
  5. Disconnect the KS connector.
  6. Remove the KS. (See «KNOCK SENSOR (KS) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S12373340602013010300000).)
  7. Measure the resistance between KS terminals A and B. (Scheme 202): Identifying KS Terminals If not as specified, replace the KS. (See «KNOCK SENSOR (KS) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S12373340602013010300000).) Specification 504-616 kilohms [10-30 °C {50-86 °F}]

Note. The fuel tank pressure sensor cannot be removed as a single unit. When replacing the fuel tank pressure sensor, replace it together with the evaporative hose component as a single unit.

  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  3. Disconnect the fuel tank pressure sensor connector.
  4. Remove the clip from the fuel tank pressure sensor bracket. (See «FUEL TANK PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S06007236372013010300000) .)
  5. Disconnect the quick release connectors and remove the evaporative hose component. (See «QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520424-S25975134472013010300000) .) (See «FUEL TANK PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S06007236372013010300000) .)
  6. Switch the ignition to ON.
  7. Plug one end of the evaporative hose component and verify that the output voltage from the fuel tank pressure sensor changes when pressure is applied from the other hose end. If not as verified, replace the evaporative hose component. (See «FUEL TANK PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520417-S06007236372013010300000) .)

DTC Inspection

Note. Because the ion sensor is integrated in the ignition coil, replacing the ion sensor includes replacement of the ignition coil/ion sensor.

Scheme 203

Scheme 203: DTC Inspection
  1. Connect the M-MDS to the DLC-2. (Scheme 203): Identifying DLC-2 Location
  2. Perform the DTC inspection using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-520416-S32489034522013010300000).) If any DTC related to the ignition coil/ion sensor is present, repair the malfunctioning location according to the applicable DTC troubleshooting. (See «DTC TABLE [SKYACTIV-G 2.0]»(ref-520416-S13626268822013010300000).)

Note. Because the ion sensor is integrated in the ignition coil, replacing the ion sensor includes replacement of the ignition coil/ion sensor.

  1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  2. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520427-S28538867222013010300000) .)
  3. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520419-S32364526322013010300000) .)
  4. Remove the ignition coil/ion sensor. (See «IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520425-S22677863952013010300000) .)
  5. Verify that there is no damage to the ignition coil/ion sensor, and no corrosion and damage to the connector. If there is a malfunction, replace the ignition coil/ion sensor. (See «IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-520425-S22677863952013010300000) .)