Engine Control System (L3): Other Mazda 5 I рестайлинг

Without Using M-MDS

Note. The PCM terminal voltage can vary with the conditions when measuring and changes due to aged deterioration on the vehicle, causing false diagnosis. Therefore determine comprehensively where the malfunction occurs among the input systems, output systems, and the PCM.

VOLTAGE SPECIFICATION

PCM terminals

1. 1R (+)-body ground (-)

Oscilloscope setting

1. 5 V/DIV (Y), 1 ms/DIV (X), DC range

Scheme 22

1. Idle after warm up

1. 2C (+)-body ground (-)

1. 2 V/DIV (Y), 10 ms/DIV (X), DC range

Scheme 23

1. Idle after warm up

Scheme 24

1. 1AO (+)-body ground (-)

1. 2.5 V/DIV (Y), 2 ms/DIV (X), DC range

Scheme 25

1. Ignition switch is turned to the ON position. (engine off)

1. 2E (+)-body ground (-)

1. 2 V/DIV (Y), 0.8 ms/DIV (X), DC range

Scheme 26

1. Idle after warm up

1. 2S (+)-body ground (-)

1. 1 V/DIV (Y), 25 ms/DIV (X), DC range

Scheme 27

1. Idle after warm up

1. 2W (+)-body ground (-)

1. 1 V/DIV (Y), 2.5 ms/DIV (X), DC range

Scheme 28

1. Idle after warm up

1. 2AA (+)-body ground (-)

1. 0.5 V/DIV (Y), 2 ms/DIV (X), DC range

Scheme 29

1. Idle after warm up (engine speed approx. 650 rpm, no load, A/C off)

1. 2AF (+)-body ground (-)

1. 2 V/DIV (Y), 1 ms/DIV (X), DC range

Scheme 30

1. Idle after warm up

1. IGT1 (No.1): 2G (+)-body ground (-)
2. IGT2 (No.2): 2K (+)-body ground (-)
3. IGT3 (No.3): 2L (+)-body ground (-)
4. IGT4 (No.4): 2H (+)-body ground (-)

1. 4 V/DIV (Y), 0.01 ms/DIV (X), DC range

Scheme 31

1. Idle after warm up

1. Fuel Injection No.1: 2BB (+)-body ground (-)
2. Fuel Injection No.2: 2BC (+)-body ground (-)
3. Fuel Injection No.3: 2BD (+)-body ground (-)
4. Fuel Injection No.4: 2AZ (+)-body ground (-)

1. 4V/DIV (Y), 20 ms/DIV (X), DC range

Scheme 32

1. Idle after warm up

1. 2A (+)-body ground (-)

1. 5 V/DIV (Y), 200 ms/DIV (X), DC range

Scheme 33

1. Idle after warm up (engine speed approx. 650 rpm, no load, A/C off)

1. 2B (+)-body ground (-)

1. 5 V/DIV (Y), 1 s/DIV (X), DC range

Scheme 34

1. Idle after warm up (engine speed approx. 650 rpm, no load, A/C off)

Using SST (M-MDS)

Note. PIDs for the following parts are not available on this model. Go to the appropriate part inspection page. CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION [L3] .) Main relay (See RELAY INSPECTION .)

Scheme 35

1. Connect the SST (M-MDS) to the DLC-2.
2. Turn the ignition switch to ON position.
3. Measure the PID value. If PID value is not within the specification, follow the instructions in Action column. NOTE: The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM. Therefore, an output device malfunction is not directly indicated as a malfunction of the monitored value for the output device. If a monitored value of an output device is out of specification, inspect the monitored value of the input device related to the output control. The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are as follows. ACCS, ALTF, ARPMDES, EVAPCP, FAN_DUTY, FR FUELPW1, GENVDSD, HTR11, HTR12, IMRC, IMTV, INJ_1, INJ_2, INJ_3, INJ_4, SEGRP, test, VT DUTY1 Wt

PID VALUES SPECIFICATION

PCM CONFIGURATION [L3]

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS. When using the IDS (laptop PC) Select the "Module Programming". When using the PDS (Pocket PC) Select the "Programming". Select the "Module Programming".
3. Then, select items from the screen menu in the following order. Select the "Programmable Module Installation". Select the "PCM".
4. Perform the configuration according to the directions on the screen.
5. Retrieve DTCs by the M-MDS, then verify that there is no DTC present. If a DTCs is detected, perform the applicable DTC inspection. (See «DTC TABLE [L3]»(ref-292892-S00807604312008080600000) )

Scheme 36

1. Remove the neutral switch. (See «NEUTRAL SWITCH REMOVAL/INSTALLATION [G35M-R]»(ref-292919-S27082027132008080600000) .)
2. Verify that the continuity between neutral switch terminals A and B is as indicated in the table. If there is no malfunction, perform the "Circuit Open/Short Inspection". If there is any malfunction, replace the neutral switch.

MEASURED CONDITION AND CONTINUITY REFERENCE

Scheme 37

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

Open circuit

1. If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness. Neutral switch terminal A and PCM terminal 1BC Neutral switch terminal B and body ground

Short circuit

1. If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness. Neutral switch terminal A and power supply Neutral switch terminal A and body ground Neutral switch terminal B and power supply

Scheme 38

1. Remove the CPP switch.
2. Verify that the continuity between CPP switch terminals A and B is as indicated in the table. If there is no malfunction, perform the "Circuit Open/Short Inspection". If there is any malfunction, replace the CPP switch.

MEASURED CONDITION AND CONTINUITY REFERENCE

Scheme 39

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

1. If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness. CPP switch terminal A and PCM terminal 1BD CPP switch terminal B and body ground

1. If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness. CPP switch terminal A and power supply CPP switch terminal A and body ground CPP switch terminal B and body ground

Scheme 40

1. Turn the ignition switch to the ON position (Engine off).
2. Verify that the PCM terminal 2AE voltage is as shown in the following table when the variable tumble 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.

Variable tumble shutter valve switch output voltage

ECT SPECIFICATION

Scheme 41

Scheme 42

1. Disconnect the PCM connector.
2. Inspect the following harness for an open or short wiring. (Continuity inspection)

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Variable tumble shutter valve switch terminal A and PCM terminal 2AU Variable tumble shutter valve switch terminal B and PCM terminal 2AV Variable tumble shutter valve switch terminal C and PCM terminal 2AE

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Variable tumble shutter valve switch terminal A and power supply Variable tumble shutter valve switch terminal A and body ground Variable tumble shutter valve switch terminal B and power supply Variable tumble shutter valve switch terminal C and power supply Variable tumble shutter valve switch terminal C and body ground

Scheme 43

1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [L3]»(ref-292887-S30644836642008080600000) .)
2. Disconnect the negative battery cable.
3. Remove the plug hole cover.
4. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [L3]»(ref-292898-S38953419202008080600000) .)
5. Disconnect the ECT sensor connector.
6. Remove the ECT sensor using the SST.
7. Install in the reverse order of removal. Tightening torque 10-14 N.m {102-142 kgf.cm, 89-123 in.lbf}

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

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. ECT sensor terminal A and power supply ECT sensor terminal A and body ground ECT sensor terminal B and power supply

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 1P MAF sensor terminal C and PCM terminal 1AK

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. MAF sensor terminal A and body ground MAF sensor terminal C and power supply MAF sensor terminal C and body ground MAF sensor terminal B and power supply

Scheme 44

1. Disconnect the mass air flow sensor connector.
2. Verify that the resistance between MAF sensor terminals D and E is within the specification. If the monitor item status/specification (reference) is not within the specification, even though the IAT sensor resistance is within the specification, perform the "Circuit Open/Short Inspection". If not within the specification, replace the MAF sensor. Standard AMBIENT TEMPERATURE AND RESISTANCE SPECIFICATION Ambient temperature (°C{°F}) Resistance (kilohm) -20 {-4.0} 13.6-18.4 20 {68} 2.21-2.69 60 {140} 0.493-0.667

Scheme 45

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. MAF/IAT sensor terminal D and PCM terminal 1 AT MAF/IAT sensor terminal E and PCM terminal 1AV

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. MAF/IAT sensor terminal D and power supply MAF/IAT sensor terminal D and body ground MAF/IAT sensor terminal E and power supply

Scheme 46

1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [L3]»(ref-292887-S30644836642008080600000) .)
2. Disconnect the negative battery cable.
3. Remove the plug hole cover.
4. Remove the vacuum hose.
5. Disconnect the MAP sensor connector.
6. Remove the MAP sensor installation screw.
7. Remove MAP sensor from the intake manifold.
8. Install in the reverse order of removal. Tightening torque 2.7-3.7 N.m {28-37 kgf.cm, 24-32 in.lbf}

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. MAP sensor terminal A and PCM terminal 2AV MAP sensor terminal D and PCM terminal 2AG MAP sensor terminal C and PCM terminal 2AU

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. MAP sensor terminal A and power supply MAP sensor terminal C and body ground MAP sensor terminal D and power supply MAP sensor terminal D and body ground

1. If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness. Throttle body terminal A and PCM terminal 2AK Throttle body terminal B and PCM terminal 2A0 Throttle body terminal C and PCM terminal 2AL Throttle body terminal D and PCM terminal 2AP

1. If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness. Throttle body terminal A and body ground Throttle body terminal A and power supply Throttle body terminal B and body ground Throttle body terminal C and body ground Throttle body terminal C and power supply Throttle body terminal D and power supply

1. If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness. APP sensor terminal A and PCM terminal 1AL APP sensor terminal B and PCM terminal 1AP APP sensor terminal C and PCM terminal 1AV APP sensor terminal D and PCM terminal body ground APP sensor terminal E and PCM terminal 1AO APP sensor terminal F and main relay terminal C

1. If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness. APP sensor terminal A and body ground APP sensor terminal B and body ground APP sensor terminal B and power supply APP sensor terminal C and power supply APP sensor terminal D and power supply APP sensor terminal E and body ground APP sensor terminal E and power supply APP sensor terminal F and body ground

CKP sensor voltage

CKP SENSOR VOLTAGE SPECIFICATION

Scheme 47

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. CKP sensor terminal A and PCM terminal body ground CKP sensor terminal B and PCM terminal 2W CKP sensor terminal C and PCM terminal 2AQ

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. CKP sensor terminal A and power supply CKP sensor terminal B and power supply CKP sensor terminal B and body ground CKP sensor terminal C and body ground

Scheme 48

1. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [L3]»(ref-292887-S30644836642008080600000) .)
2. Disconnect the negative battery cable.
3. Remove the plug hole cover. CAUTION: When 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.
4. Disconnect the CMP sensor connector.
5. Remove the CMP sensor installation bolt.
6. Remove the CMP sensor from the cylinder head cover.
7. Install in the reverse order of removal. Tightening torque 5.5-7.5 N.m {57-76 kgf.cm, 49-66 in.lbf}

CMP sensor voltage

CMP SENSOR VOLTAGE SPECIFICATION

Scheme 49

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. CMP sensor terminal A and PCM terminal body ground CMP sensor terminal B and PCM terminal 2S CMP sensor terminal C and PCM terminal 2AM

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. CMP sensor terminal A and power supply CMP sensor terminal B and power supply CMP sensor terminal B and body ground CMP sensor terminal C and body ground

Scheme 50

1. Warm up the engine to normal operating temperature.
2. Using the M-MDS, 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-292895-S19785492882008080600000) .) Then if there is no malfunction in the wiring harness, replace the front HO2S.

Scheme 51

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)

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Front HO2S terminal B and PCM terminal 2AD Front HO2S terminal D and PCM terminal 2AC Front HO2S terminal F and PCM terminal 2Z

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Front HO2S terminal B and body ground Front HO2S terminal B and power supply Front HO2S terminal D and power supply Front HO2S terminal D and body ground Front HO2S terminal F and power supply Front HO2S terminal F and body ground

Scheme 52

1. Disconnect the front HO2S connector.
2. Measure the resistance between front HO2S terminals A and E. If not within the specification, replace the front HO2S. Front HO2S heater resistance 1-10 ohms

Scheme 53

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)

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Front HO2S terminal A and main relay terminal C Front HO2S terminal E and PCM terminal 2A

1. If there is no continuity, there is a short circuit. Repair or replace the wiring harness. Front HO2S terminal A and body ground Front HO2S terminal E and power supply Front HO2S terminal E and body ground

Scheme 54

1. Warm up the engine to normal operating temperature.
2. Using the M-MDS, monitor the following: Vehicle speed (PID: VSS) Engine speed (PID: RPM) Rear HO2S voltage (PID: O2S12)
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 rear HO2S outputs a voltage of 0.6 V or more , one time or more, then verify that the rear HO2S voltage (PID: O2S12) is 0.3 V or less while decelerating as shown in the figure. If not within the specification, inspect the HO2S for an open or short circuit. (See «REAR HO2S CIRCUIT OPEN/SHORT INSPECTION (SENSOR)»(ref-292895-S40800705492008080600000) .) Then if there is no malfunction in the wiring harness, replace the rear HO2S.

Scheme 55

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Rear HO2S terminal A and PCM terminal 2Q Rear HO2S terminal B and PCM terminal 2AV

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Rear HO2S terminal A and body ground Rear HO2S terminal A and power supply Rear HO2S terminal B and power supply

Scheme 56

1. Disconnect the rear HO2S connector.
2. Measure the rear HO2S resistance between terminals C and D. If not within the specification, replace the rear HO2S. Rear HO2S heater resistance 2-50 ohms

Scheme 57

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Rear HO2S terminal C and ignition switch Rear HO2S terminal D and PCM terminal 2B

1. If there is no continuity, there is a short circuit. Repair or replace the wiring harness. Rear HO2S terminal C and body ground Rear HO2S terminal D and power supply Rear HO2S terminal D and body ground

Scheme 58

1. Remove the following part for easier access. Intake manifold (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3]»(ref-292889-S35789412952008080600000) .)
2. Disconnect the KS connector.
3. Remove the KS installation bolt, then remove the KS.
4. Install in the reverse order of removal. Tightening torque 16-24 N.m {1.7-2.4 kgf.cm, 12-17 ft.lbf}

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

1. If there is continuity, there is a short circuit. Repair or replace the wiring harness. Knock sensor terminal A and power supply Knock sensor terminal A and body ground Knock sensor terminal B and power supply Knock sensor terminal B and body ground