Engine Control System (Lf, L3): Other Mazda 3 BK рестайлинг

California emission regulation applicable model

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.

PCM CONNECTOR TERMINALS VOLTAGE SPECIFICATION

Except for California emission regulation applicable model with LF ATX

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.

PCM CONNECTOR TERMINALS VOLTAGE SPECIFICATION

Except for California emission regulation applicable model with LF MTX and L3

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.

PCM CONNECTOR TERMINALS VOLTAGE SPECIFICATION

PCM terminals

1. 1A(California emission regulation applicable model), 1B(Except for California emission regulation applicable model) (+)-body ground (-)

Oscilloscope setting

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

Scheme 68

1. 4GR

1. 1E(California emission regulation applicable model), 1C(Except for California emission regulation applicable model) (+)-body ground (-)

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

Scheme 69

1. 1GR

1. 1F(California emission regulation applicable model), 1D(Except for California emission regulation applicable model) (+)-body ground (-)

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

Vehicle condition

1. 1GR or 2GR

1. 1M(California emission regulation applicable model), 1G(Except for California emission regulation applicable model) (+)-body ground (-)

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

Scheme 70

1. All of the following conditions are met. Ignition switch is turned to the ON position, (engine off) P or N position CTP

1. 1N(California emission regulation applicable model), 1H(Except for California emission regulation applicable model) (+)-body ground (-)

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

Scheme 71

1. All of the following conditions are met. Ignition switch is turned to the ON position. (engine off) P or N position CTP

1. 1 AW(California emission regulation applicable model), 1 J(Except for California emission regulation applicable model) (+)-body ground (-)

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

Scheme 72

1. Vehicle speed is 32 km/h {20 mph}.

1. 2M (+)-2N (-)

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

Scheme 73

1. Vehicle speed is 10 km/h {6.2 mph}.

1. 1AO(California emission regulation applicable model), 1M(Except for California emission regulation applicable model) (+)-body ground (-)

1. 500 mV/DIV (Y), 1 ms/DIV (X), DC range

Scheme 74

1. Idle after warm-up (no load, P/S off, A/C off)

1. 1AG(California emission regulation applicable model), 1Q(Except for California emission regulation applicable model) (+)-body ground (-)

1. 500 mV/DIV (Y), 1 ms/DIV (X), DC range

Scheme 75

1. Idle after warm-up (no load, P/S off, A/C off)

1. 1Y(California emission regulation applicable model), 1W(Except for California emission regulation applicable LF ATX model), 1R(Except for California emission regulation applicable LF MTX, L3 model)(+)-body ground (-)

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

Scheme 76

1. Idle after warm up (engine speed approx. 700 rpm, A/C ON)

Scheme 77

1. 1AC(California emission regulation applicable model), 1AL(Except for California emission regulation applicable LF ATX model), 1AO(Except for California emission regulation applicable LF MTX, L3 model)(+)-body ground (-)

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

Scheme 78

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

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

1. 5 V/DIV (Y), 50 ms/DIV (X), DC range

Scheme 79

1. Idle after warm up (no load, P/S off, A/C off)

1. 2G(Except for California emission regulation applicable LF ATX model), 2BG(Except for California emission regulation applicable LF MTX, L3 model)(+)-body ground (-)

1. 5 V/DIV (Y), 125 ms/DIV (X), DC range

Scheme 80

1. Idle after warm up (no load, P/S off, A/C off)

1. 2S(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model) 4 , 2V(Except for California emission regulation applicable LF ATX model)(+)-body ground(-)

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

Scheme 81

1. Idle after warm up (no load, P/S off, A/C off)

1. 2W(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model), 2U(Except for California emission regulation applicable LF ATX model)(+)-body ground(-)

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

Scheme 82

1. Idle after warm up (no load, P/S off, A/C off)

1. 2E(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model), 2AF(Except for California emission regulation applicable LF ATX model)(+)-body ground (-)

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

Scheme 83

1. Idle after warm up (no load, P/S off, A/C off)

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

1. 0.2 V/DIV (Y), 500 ms/DIV (X), DC range

Scheme 84

1. Idle after warm up (no load, P/S off, A/C off)

1. 2AJ(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model), 2AM(Except for California emission regulation applicable LF ATX model) (+)-body ground (-)

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

Scheme 85

1. Idle after warm up (no load, P/S off, A/C off)

1. 2C(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model), 2AN(Except for California emission regulation applicable LF ATX model) (+)-body ground (-)

1. 2 V/DIV (Y), 0.1 s/DIV (X), DC range

Scheme 86

1. Idle after warm up (no load, P/S off, A/C off)

1. 2AI(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model), 2AQ(Except for California emission regulation applicable LF ATX model)(+)-body ground (-)

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

Scheme 87

1. Idle after warm up (no load, P/S off, A/C off)

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

Scheme 88

1. Idle after warm up (no load, P/S off, A/C off)

PCM terminals(California emission regulation applicable model)(Except for California emission regulation applicable LF MTX, L3 model)

1. IGT1 (No.1): 2BA(+)-body ground (-)
2. IGT2 (No.2): 2AW(+)-body ground (-)
3. IGT3 (No.3): 2AX(+)-body ground (-)
4. IGT4 (No.4): 2AT(+)-body ground (-)

Scheme 89

1. IGT1 (No.1): 2BE(+)-body ground (-)
2. IGT2 (No.2): 2BF(+)-body ground (-)
3. IGT3 (No.3): 2BG(+)-body ground (-)
4. IGT4 (No.4): 2BH(+)-body ground (-)

1. 10 V/DIV (Y), 25 ms/DIV (X), DC range

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

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 [LF, L3] ). Main relay (See RELAY INSPECTION .)

Scheme 90

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, FP, FUELPW1, GENVDSD, HTR11, HTR12, HTR13(California emission regulation applicable model), IMRC, IMTV, INJ_1, INJ_2, INJ_3, INJ_4, LPS(LF ATX), SEGRP, SOL 12S(LF ATX), SOL 23S(LF ATX), SSA/SS1(LF ATX), SSB/SS2(LF ATX), SSC/SS3(LF ATX), test, VT DUTY1 Wt

PID/DATA monitor table (reference)

PID/DATA MONITOR TABLE

Scheme 91

1. Connect the M-MDS to 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 "Programming". Select "Module Programming".
3. Then, select the "Programmable Module Installation" and "PCM" from the screen menu.
4. Select "Programmable Parameters", [with DSC HU/CM]
5. Select "Tire Size / Axle Ratio", [with DSC HU/CM]
6. Select "Body Type - (PCM)", then select the applicable body type on the M-MDS screen, [with DSC HU/CM]
7. Retrieve DTCs using the M-MDS, then verify if DTCs are present. If a DTC is present, perform the applicable DTC inspection.

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 B and ground

Open circuit

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 1D 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 body ground CPP switch terminal A and power supply CPP switch terminal B and power supply

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(California emission regulation applicable model), 2AR(Except for California emission regulation applicable model with LF MTX, L3), 2W(Except for California emission regulation applicable model with LF ATX) Variable tumble shutter valve switch terminal B and PCM terminal 2AY(California emission regulation applicable model), 2P(Except for California emission regulation applicable model with LF MTX, L3), 2AA(Except for California emission regulation applicable model with LF ATX) 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 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 92

1. Remove the battery cover.
2. Disconnect the negative battery cable.
3. Remove the plug hole cover.
4. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [LF, L3]»(ref-274414-S12477637642007121800000) .)
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(California emission regulation applicable model) (Except for California emission regulation applicable model with LF MTX, L3), 2AK(Except for California emission regulation applicable model with LF ATX) ECT sensor terminal B and PCM terminal 2AY(California emission regulation applicable model), 2P(Except for California emission regulation applicable model with LF MTX, L3), 2AA(Except for California emission regulation applicable model with LF ATX)

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 A MAF sensor terminal B and PCM terminal 1AR(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 1AE(Except for California emission regulation applicable model with LF ATX) MAF sensor terminal C and PCM terminal 1AK(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 1AC(Except for California emission regulation applicable model with LF ATX)

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 B and power supply MAF sensor terminal C and power supply MAF sensor terminal C and body ground

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 1AT(California emission regulation applicable model)(Except for California emission regulation applicable model with LF MTX, L3), 1AH(Except for California emission regulation applicable model with LF ATX) MAF/IAT sensor terminal E and PCM terminal 1AS(California emission regulation applicable model), 1AV(Except for California emission regulation applicable model with LF MTX, L3), 1AA(Except for California emission regulation applicable model with LF ATX)

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

Scheme 93

1. Remove the battery cover.
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 2AY(California emission regulation applicable model), 2P(Except for California emission regulation applicable model with LF MTX, L3), 2AA(Except for California emission regulation applicable model with LF ATX) MAP sensor terminal C and PCM terminal 2AU(California emission regulation applicable model), 2AR(Except for California emission regulation applicable model with LF MTX, L3), 2W(Except for California emission regulation applicable model with LF ATX) MAP sensor terminal D and PCM terminal 2AG(California emission regulation applicable model), 2AG(Except for California emission regulation applicable model with LF MTX, L3), 2AL(Except for California emission regulation applicable model with LF ATX)

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(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2M(Except for California emission regulation applicable model with LF ATX) Throttle body terminal B and PCM terminal 2AO(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2K(Except for California emission regulation applicable model with LF ATX) Throttle body terminal C and PCM terminal 2AL(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2I(Except for California emission regulation applicable model with LF ATX) Throttle body terminal D and PCM terminal 2AP(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2O(Except for California emission regulation applicable model with LF ATX)

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 B and power supply Throttle body terminal C and body ground Throttle body terminal C and power supply Throttle body terminal D and body ground Throttle body terminal D and power supply

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 power supply

Note. Before performing the following inspection, make sure to follow the troubleshooting flowchart. (See FOREWORD [LF, L3] .)

Scheme 94

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-274409-S28850717452007121800000) ). Then if there is no malfunction in the wiring harness, replace the front HO2S.

Scheme 95

1. Disconnect the front HO2S connector.
2. Measure the resistance between front HO2S terminals C and D. If not within the specification, replace the front HO2S. (See «HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [LF, L3]»(ref-274409-S16888798822007121800000) ). Front HO2S heater resistance 1-10 ohms [20°C {68°F}]

Scheme 96

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)

Scheme 97

1. If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness. Front HO2S terminal A and PCM terminal 2AD Front HO2S terminal B and PCM terminal 2Z Front HO2S terminal C and PCM terminal 2BG Front HO2S terminal D and main relay terminal A

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

Scheme 98

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) Middle/rear HO2S voltage (PID: O2S12/O2S13)
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 middle/rear HO2S outputs a voltage of 0.6 V or more , one time or more, then verify that the middle/rear HO2S voltage (PID: O2S12/O2S13) 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 «MIDDLE/REAR HO2S CIRCUIT OPEN/SHORT INSPECTION (SENSOR)»(ref-274409-S42475282742007121800000) ). Then if there is no malfunction in the wiring harness, replace the middle/rear HO2S.

Scheme 99

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. Middle HO2S terminal A and PCM terminal 2R Rear HO2S terminal A and PCM terminal 2Q Middle/rear HO2S terminal B and PCM terminal 2AY

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Middle/rear HO2S terminal C and main relay A Middle HO2S terminal D and PCM terminal 2BF Rear HO2S terminal D and PCM terminal 2BE

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

Except for California Emission Regulation Applicable Model

Note. Before performing the following inspection, make sure to follow the procedure as indicated in the troubleshooting flowchart.

1. If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness. Front HO2S terminal A and main relay terminal A Front HO2S terminal B and PCM terminal 2AD Front HO2S terminal D and PCM terminal 2AC Front HO2S terminal E and PCM terminal 2BG(LF MTX, L3),2G(LF ATX) Front HO2S terminal F and PCM terminal 2Z

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

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(LF MTX, L3), 2AH(LF ATX) Rear HO2S terminal B and PCM terminal 2P(LF MTX, L3), 2AA(LF ATX)

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 100

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

1. If there is no continuity, there is an open circuit. Repair or replace the wiring harness. Rear HO2S terminal C and main relay terminal A Rear HO2S terminal D and PCM terminal 2BE(LF MTX, L3), 2C(LF ATX)

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

1. If there is no continuity, the circuit is open. Repair or replace the wiring harness. CKP sensor terminal A and body ground CKP sensor terminal B and PCM terminal 2W(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2U(Except for California emission regulation applicable model with LF ATX) CKP sensor terminal C and PCM terminal 2AQ(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2T(Except for California emission regulation applicable model with LF ATX)

1. If there is continuity, the circuit is shorted. 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 101

1. Remove the battery cover.
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 {56-76 kgf.cm, 49-66 in.lbf}

1. If there is no continuity, the circuit is open. Repair or replace the wiring harness. CMP sensor terminal A and body ground CMP sensor terminal B and PCM terminal 2S(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3),2V(Except for California emission regulation applicable model with LF ATX) CMP sensor terminal C and PCM terminal 2AM(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3), 2X(Except for California emission regulation applicable model with LF ATX)

1. If there is continuity, the circuit is shorted. 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 power supply

Scheme 102

1. Remove the following part for easier access. Intake manifold (See «INTAKE AIR SYSTEM REMOVAL/INSTALLATION [LF, L3]»(ref-274413-S08269225382007121800000) .)
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.m, 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(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3),2Q(Except for California emission regulation applicable model with LF ATX) Knock sensor terminal B and PCM terminal 2V(California emission regulation applicable model and except for California emission regulation applicable model with LF MTX, L3),2R(Except for California emission regulation applicable model with LF ATX)

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