Engine Control System (L3 with TC): Diagnosis Mazda 6 GG рестайлинг

CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

Continuity Inspection

1. Verify that the clutch switch is installed properly.
2. Disconnect the negative battery cable.
3. Remove the clutch switch. (See «CLUTCH PEDAL REMOVAL/INSTALLATION [A26MX-R]»(ref-244595-S03134442222006092500000) ).
4. Inspect for continuity between the clutch switch terminals using a tester. If the clutch switch is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection". If not as specified, replace the clutch switch.

Specification

Scheme 124

Scheme 125

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following harnesses for an open or short circuit. (Continuity check)

Scheme 126

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Clutch switch terminal A and PCM terminal 1H Clutch switch terminal B and body ground

NEUTRAL SWITCH INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

1. Disconnect the negative battery cable.
2. Remove the neutral switch. (See «MANUAL TRANSAXLE REMOVAL/INSTALLATION [G35M-R]»(ref-244567-S28118070672006092500000) ).
3. Inspect for continuity between the neutral switch terminals using a tester. If the neutral switch is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection". If not as specified, replace the neutral switch.

Specification

Scheme 127

Scheme 128

Scheme 129

Scheme 130

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following harnesses for an open or short circuit. (Continuity check)

POWER STEERING PRESSURE (PSP) SWITCH INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

1. Inspect the following if the power steering is inoperative (See «POWER STEERING FLUID INSPECTION»(ref-244594-S41752550022006092500000) ). Power steering fluid level Power steering fluid leakage Power steering fluid pressure
2. Disconnect the PSP switch connector.
3. Start the engine.
4. Inspect for continuity between the PSP switch terminal and ground using a tester. If not as specified, replace the PSP switch. (See «POWER STEERING OIL PUMP REMOVAL/INSTALLATION [L3, L3 WITH TC]»(ref-244594-S18988442822006092500000) ). If the PSP switch is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection".

Specification

Scheme 131

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following harnesses for an open or short circuit. (Continuity check)

Scheme 132

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. PSP switch terminal and PCM terminal 1Z

VARIABLE SWIRL SHUTTER VALVE SWITCH INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

Scheme 133

1. Turn the ignition switch to the ON position (Engine off).
2. Verify that the PCM terminal 1N voltage is as shown in the following table when the variable swirl shutter valve actuator rod is depressed and released by hand. If not as specified, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace the intake manifold. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S40996001322006092500000) ).

Variable swirl shutter valve switch output voltage

OUTPUT VOLTAGE CHART

Scheme 134

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following harnesses for an open or short circuit. (Continuity check)

Scheme 135

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Variable swirl shutter valve switch terminal A and PCM terminal 1N Variable swirl shutter valve switch terminal B and body ground.

ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

Scheme 136

1. Turn the ignition switch to the ON position (Engine off).
2. Verify that the PCM terminal 2A and 3D change smoothly while throttle valve is gradually opened. If as verified, go to next step. If not as verified, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace the throttle body. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S40996001322006092500000) ).
3. Verify that the PCM terminal 2A and 3D voltages are as shown in the following table. If voltage is not as following table, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace accelerator pedal. (See «ACCELERATOR PEDAL REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S30230222602006092500000) ).

APP sensor output voltage

APP SENSOR OUTPUT VOLTAGE CHART

Scheme 137

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 138

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. APP sensor terminal A and PCM terminal 2K APP sensor terminal B and PCM terminal 2H APP sensor terminal C and PCM terminal 2A APP sensor terminal D and PCM terminal 3G APP sensor terminal E and PCM terminal 3A APP sensor terminal F and PCM terminal 3D

THROTTLE POSITION (TP) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

Scheme 139

1. Verify that no DTC related to APP sensor has been detected. If any DTCs related to APP sensor have been detected, perform the DTC inspection. (See «DTC TABLE [L3 WITH TC]»(ref-244573-S04666182622006092500000) ).
2. Start the engine and warm it up (ECT: more than 80°C {176°F}).
3. Turn the ignition switch to the ON position (Engine off).
4. Verify that the PCM terminal 3J and 3M change smoothly while throttle valve is gradually opened. If as verified, go to next step. If not as verified, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace the throttle body.
5. Verify that the PCM terminal 3J and 3M voltages are as shown in the following table. If voltage is not as following table, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace the throttle body.

TP sensor output voltage

TP SENSOR OUTPUT VOLTAGE CHART

Scheme 140

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 141

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Throttle body terminal A and PCM terminal 3M Throttle body terminal B and PCM terminal 3P Throttle body terminal C and PCM terminal 3J Throttle body terminal D and PCM terminal 3Q

Visual Inspection

Note. Perform the following inspection only when directed.

1. Visually inspect for the following on the MAF sensor. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S40996001322006092500000) ). Damage Cracks Bent terminals Terminal rust If any of the above are found, replace the MAF sensor. If the MAF PID value is out of specification, carry out the "Circuit Open/Short Inspection".

Scheme 142

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Disconnect the MAF sensor connector.
3. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 143

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. MAF sensor terminal A and main relay terminal C MAF sensor terminal B and PCM terminal 11 MAF sensor terminal C and PCM terminal 1P

ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed.

ECT Sensor Resistance Inspection

1. Drain the engine coolant. (See «COOLING SYSTEM SERVICE WARNINGS [L3 WITH TC]»(ref-244581-S05532361152006092500000) ).
2. Remove the ECT sensor (located above the starter).
3. Place the ECT sensor in water with a thermometer, and heat the water gradually.
4. Measure the resistance between the ECT sensor terminals A and B using a tester. If not as specified, replace the ECT sensor. If the ECT sensor is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection".

Specification

TEMPERATURE AND RESISTANCE CHART

Scheme 144

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 145

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. ECT sensor terminal A and PCM terminal 1M ECT sensor terminal B and PCM terminal 2H

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed. The following vacuum values are indicated by relative pressure from the MAP sensor.

1. Connect the WDS or equivalent to the DLC-2.
2. Turn the ignition switch to ON (Engine off).
3. Select MAP PID on the WDS or equivalent.
4. Verify that the MAP PID (pressure) and barometric pressure are practically equal. If not as verified, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace the MAP sensor. If as verified, go to next step.
5. Apply vacuum of -25.0 kPa {-187 mmHg, -7.38 inHg} to the MAP sensor, and verify that the MAP variation from that of Step 4 is approx. 25.0 kPa {187 mmHg, 7.38 inHg}. If not as verified, perform the "Circuit Open/Short inspection". If there is no open or short circuit, replace the barometric pressure sensor. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S40996001322006092500000) ).

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 146

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. MAP/boost air temperature sensor terminal A and PCM terminal 2H MAP/boost air temperature sensor terminal D and PCM terminal U MAP/boost air temperature sensor terminal C and PCM terminal 2K

Resistance Inspection

Note. Perform the following inspection only when directed.

Scheme 147

1. Disconnect MAP/boost air temperature sensor.
2. Measure the resistance between the MAP/boost air temperature sensor terminals A and B using a tester. If not as specified, replace the MAP/boost air temperature sensor. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S40996001322006092500000) ). If the MAP/boost air temperature sensor is normal, but PID are out of specification, perform the "Circuit Open/Short Inspection".

Specification

TEMPERATURE AND RESISTANCE CHART

Scheme 148

Scheme 149

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Note. Perform the following inspection only when directed.

Scheme 150

1. Disconnect the MAF/IAT sensor.
2. Measure the resistance between the MAF/IAT sensor terminals D and E using a tester. If not as specified, replace the MAF/IAT sensor. (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244582-S40996001322006092500000) ). If the MAF/IAT sensor is normal, but the PID is out of specification, perform the "Circuit Open/Short Inspection".

Specification

TEMPERATURE AND RESISTANCE CHART

Scheme 151

Scheme 152

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed. The following vacuum values are indicated by relative pressure from the PCM. (See PCM REMOVAL/INSTALLATION [L3 WITH TC] ).

1. Connect the WDS or equivalent to the DLC-2.
2. Turn the ignition switch to the ON position.
3. Select BARO on the WDS or equivalent.
4. Verify that the BARO PID (pressure) and barometric pressure are practically equal. If not as verified, perform the "Circuit Open/Short Inspection". If there is no open or short circuit, replace the BARO sensor. If as verified, go to next step.

FUEL PRESSURE SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection only when directed. The following vacuum values are indicated by relative pressure from the fuel pressure sensor.

1. Remove the charge air cooler cover.
2. Connect the WDS or equivalent to the DLC-2.
3. Turn the ignition switch to the ON position (Engine off).
4. Select the FUEL_PRES PID on the WDS or equivalent.
5. After warming up the engine, verify that the FUEL_PRES PID is at the standard value under the following conditions. If not as verified, replace the fuel delivery pipe. FUEL PRESSURE SENSOR INSPECTION Step Condition FUEL_PRES PID 1 Idle 90 s after engine is started Approx. 3 MPa 2 Idle Spill valve solenoid valve connector is disconnected Approx. 530 kPa
6. After connecting the spill valve control solenoid valve connector, clear the DTC.

Scheme 153

Scheme 154

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

KNOCK SENSOR (KS) INSPECTION [L3 WITH TC]

Note. Perform the following test only when directed.

1. Turn the ignition switch to the LOCK position.
2. Disconnect the KS connector.
3. Measure the resistance between the KS terminals A and B using a tester. If not as specified, replace the KS. (See «KNOCK SENSOR (KS) REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S15755520542006092500000) ). If the KS is normal, but PID value is out of specification, perform the "Circuit Open/Short Inspection". Specification Approx. 4.87 megohms

1. Disconnect the PCM connector. (See «PCM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S06412902502006092500000) ).
2. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 155

1. If there is no continuity there is an open circuit. Repair or replace the wiring harness. KS terminal A and PCM terminal 2S KS terminal B and PCM terminal 2P

CAMSHAFT POSITION (CMP) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection according to the DATA MONITOR function (indicated by monitor item from here onwards).

1. Disconnect the negative battery cable.
2. Remove the CMP sensor. (See «CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S30447052742006092500000) ).
3. Verify that there are no metal shavings on the sensor. If the monitor item condition/specification (reference) is not within the specification even though there is no malfunction, carry out the "Circuit Open/Short Inspection".

Scheme 156

1. Idle the engine. CAUTION: Water penetrating the connector will cause sensor malfunction. To prevent this, be careful not to damage the wiring harnesses or the waterproof connector so as to cause water penetration.
2. Measure the output voltage using an oscilloscope. If not within the specification, replace the CMP sensor. If the monitor item condition/specification (reference) is not within the specification, even though the voltage is within the specification, carry out the "Circuit Open/Short Inspection".

Voltage

TERMINALS VOLTAGE CHART

Scheme 157

Scheme 158

1. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 159

1. If there is no continuity, the circuit is open. Repair or replace the wiring harness. CMP sensor terminal A and main relay terminal C CMP sensor terminal B and PCM terminal 2H CMP sensor terminal C and PCM terminal 2E

CRANKSHAFT POSITION (CKP) SENSOR INSPECTION [L3 WITH TC]

Note. Perform the following inspection according to the DATA MONITOR function (indicated by monitor item from here onwards).

Scheme 160

1. Verify that the CKP sensor is securely installed.
2. Using a thickness gauge, measure the air gap between the plate projections at the back of crankshaft pulley and the CKP sensor. If not within the specification, inspect the plate projections for cracks or bending. If there is any malfunction, replace the plate. If the monitor item condition/specification (reference) is not within the specification, even though there is no malfunction, carry but the "Circuit Open/Short Inspection". Air gap 0.5-1.5 mm {0.02-0.05 in}

1. Disconnect the negative battery cable.
2. Remove the CKP sensor. (See «CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244577-S25248039822006092500000) ).
3. Verify that there are no metal shavings on the sensor. If the monitor item condition/specification (reference) is without the specification even though there is no malfunction, carry out the "Circuit Open/Short Inspection".

Scheme 161

1. Idle the engine. CAUTION: Water penetrating the connector will cause sensor malfunction. To prevent this, be careful not to damage the wiring harnesses or the waterproof connector so as to cause water penetration.
2. Measure the output voltage using an oscilloscope. If not within the specification, replace the CKP sensor. If the monitor item condition/specification (reference) is without the specification, even though the voltage is within the specification, carry out the "Circuit Open/Short Inspection".

Voltage

TERMINALS VOLTAGE CHART

Scheme 162

Scheme 163

1. Inspect the following wiring harnesses for an open or short circuit. (Continuity check)

Scheme 164

1. If there is no continuity, the circuit is open. Repair or replace the wiring harness. CKP sensor terminal A and PCM terminal 2H CKP sensor terminal B and PCM terminal 2C CKP sensor terminal C and main relay terminal C

HEATED OXYGEN SENSOR (HO2S) INSPECTION [L3 WITH TC]

Note. Before performing the following inspection, make sure to follow the troubleshooting flowchart.

Scheme 165

1. Warm up the engine to normal operating temperature.
2. Using the WDS or equivalent, monitor the following: Vehicle speed (PID: VSS) Engine speed (PID: RPM) Front HO2S current (PID: O2S11)
3. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 RPM or more.
4. Verify that the front HO2S current (PID: O2S11) is 0.25 mA or more while decelerating as shown in the figure. If not within the specification, inspect the HO2S for an open or short circuit. (See «FRONT HO2S CIRCUIT OPEN/SHORT INSPECTION (SENSOR)»(ref-244577-S11369910502006092500000) ). Then if there is no malfunction in the wiring harness, replace the front HO2S.

Scheme 166

1. Disconnect the front HO2S connector.
2. Measure the resistance between front HO2S terminals 2B and 2D. If not within the specification, replace the front HO2S. (See «EXHAUST SYSTEM REMOVAL/INSTALLATION [L3 WITH TC]»(ref-244579-S25795875612006092500000) ). Front HO2S heater resistance 1-10 ohms

Scheme 167

Scheme 168

Scheme 169

1. Disconnect the PCM connector.
2. Disconnect the front HO2S connector.
3. Inspect the following wiring harnesses for an open or short circuit. (Continuity inspection)