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Home >> Mazda >> 2006 >> 3 i, 2.0 F, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Pcm Inspection >> Without Using The SST >> California Emission Regulation Applicable Model

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.
    Fig 1: Identifying PCM Connector Terminal
    G04313848Courtesy of MAZDA MOTORS CORP.
TERMINAL SPECIFICATION CHART

Terminal Signal Connected to Test condition Voltage (V) Inspection item
1A Shift solenoid A(1) Shift solenoid A See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Shift solenoid A
  • Related wiring harness
-(2) - - - -
1B Starter relay control Starter relay Under any condition Below 1.0
  • Starter relay
  • Related wiring harness
1C - - - - -
1D -(1) - - - -
Clutch operation(2) CPP switch Clutch pedal depressed Below 1.0
  • CPP switch
  • Related wiring harness
Clutch pedal released B+
1E Shift solenoid B(1) Shift solenoid B See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Shift solenoid B
  • Related wiring harness
-(2) - - - -
1F Shift solenoid C(1) Shift solenoid C See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Shift solenoid C
  • Related wiring harness
-(2) - - - -
1G - - - - -
1H Fuel pump control Fuel pump relay Ignition switch to the ON position B+
  • Fuel pump relay
  • Related wiring harness
Cranking Below 1.0
Idle Below 1.0
1I A/C A/C relay Idle A/C operating Below 1.0
  • A/C relay
  • Related wiring harness
A/C not operating B+
1J Refrigerant pressure switch (medium) Refrigerant pressure switch (medium) A/C ON Refrigerant pressure is above 1.52 MPa {15.5 kgf/cm2 , 220 psi} Below 1.0
  • Refrigerant pressure switch
  • Related wiring harness
Refrigerant pressure is below 1.23 MPa {12.5 kgf/cm2 , 178 psi} B+
1K - - - - -
1L - - - - -
1M Pressure control solenoid (+)(1) Pressure control solenoid See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Pressure control solenoid
  • Related wiring harness
-(2) - - - -
1N Pressure control solenoid (-)(1) Pressure control solenoid See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Pressure control solenoid
  • Related wiring harness
-(2) - - - -
1O - - - - -
1P - - - - -
1Q Main relay control Main relay Ignition switch off after 15 min B+
  • Main relay
  • Related wiring harness
Ignition switch to the ON position Below 1.0
1R - - - - -
1S GND (shield) Input/turbine speed sensor harness, GND Under any condition Below 1.0
  • Related wiring harness
1T - - - - -
1U EVAP leak detection pump (pump) EVAP leak detection pump Ignition switch to the ON position B+
  • EVAP leak detection pump
  • Related wiring harnesses
Idling B+
1V EVAP leak detection pump (solenoid) EVAP leak detection pump Ignition switch to the ON position B+
  • EVAP leak detection pump
  • Related wiring harnesses
Idling B+
1W - - - - -
1X -(1) - - - -
Neutral position(2) Neutral switch Ignition switch is turned to the ON position Shift lever is at neutral position Below 1.0
  • Neutral switch
  • Related wiring harness
Shift lever is not at neutral position B+
1Y Cooling fan control Fan control module
  • Fan control module
  • Related wiring harness
1Z Shift solenoid E(1) Shift solenoid E See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Shift solenoid E
  • Related wiring harness
-(2) - - - -
1AA - - - - -
1AB Brake Brake switch Brake pedal depressed B+
  • Brake switch
  • Related wiring harness
Brake pedal released Below 1.0
1AC APP sensor 2 APP sensor
  • APP sensor
  • Related wiring harness
1AD Shift solenoid D(1) Shift solenoid D See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Shift solenoid D
  • Related wiring harness
-(2) - - - -
1AE - - - - -
1AF Manual down(1) Down switch Ignition switch is turned to the ON position. Detects downshift operation of selector lever in M range 1.0 or less
  • Selector lever
  • Related wiring harness
Others B+
-(2) - - - -
1AG Input/turbine speed sensor (-)(1) Input/turbine speed sensor See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Input/turbine speed sensor
  • Related wiring harness
-(2) - - - -
1AH Selector lever position(1) TR switch Ignition switch is turned to the ON position P position Approx. 4.6
  • TR switch
  • Related wiring harness
R position Approx. 3.9
N position Approx. 3.2
D range Approx. 2.5
M range Approx. 2.5
-(2) - - - -
1AI CAN (L) Instrument cluster, ABS HU/CM, EHPAS control module Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
  • Related wiring harness
1AJ Manual up(1) Up switch Ignition switch is turned to the ON position. Detects up-shift operation of selector lever in M range 1.0 or less
  • Selector lever
  • Related wiring harness
Others B+
-(2) - - - -
1AK MAF MAF sensor Ignition switch to the ON position Approx. 0.7
  • MAF sensor
  • Related wiring harness
Idle (after warm up) Approx. 1.5
1AL Constant voltage (VREF) APP sensor Ignition switch to the ON position Approx. 5.0
  • Related wiring harness
1AM CAN (H) Instrument cluster, ABS HU/CM, EHPAS control module Because this terminal is for CAN, good/no good judgment by terminal voltage is not possible.
  • Related wiring harness
1AN M range switch(1) M range switch Ignition switch is turned to the ON position. M range 1.0 or less
  • Selector lever
  • Related wiring harness
Except above B+
-(2) - - - -
1AO Input/turbine speed sensor (+)(1) Input/turbine speed sensor See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • Input/turbine speed sensor
  • Related wiring harness
-(2) - - - -
1AP APP sensor 1 APP sensor Ignition switch to the ON position When the accelerator pedal is depressed Approx. 3.0
  • APP sensor
  • Related wiring harness
When the accelerator pedal is released Approx. 0.4
1AQ Cruise control switch Cruise control switch Ignition switch to the ON position ON/OFF switch pressed in Approx. 0
  • Cruise control switch
  • Related wiring harnesses
CANCEL switch pressed in Approx. 1.1
SET/COAST switch pressed in Approx. 3.1
RES/ACCEL switch pressed in Approx. 4.2
Except above Approx. 5
1AR Sensor GND MAF sensor Under any condition Below 1.0
  • Related wiring harness
1AS Sensor GND TFT sensor(1), TR switch(1), IAT sensor, APP sensor Under any condition Below 1.0
  • Related wiring harness
1AT IAT MAF/IAT sensor Ignition switch to the ON position IAT 0 °C {32 °F} Approx. 3.43
  • IAT sensor
  • Related wiring harness
IAT 20 °C {68 °F} Approx. 2.38
IAT 40 °C {104 °F} Approx. 1.49
IAT 60 °C {140 °F} Approx. 0.89
IAT 80 °C {176 °F} Approx. 0.53
IAT 100 °C {212 °F} Approx. 0.33
1AU A/C on signal Refrigerant pressure switch (high and low) Idle A/C switch and fan switch on Below 1.0
  • Refrigerant pressure switch
  • Related wiring harness
1AV - - - - -
1AW Vehicle speed(1) VSS See INSPECTION USING AN OSCILLOSCOPE (REFERENCE) .
  • VSS
  • Related wiring harness
-(2) - - - -
1AX Drive-by-wire relay control Drive-by-wire relay Ignition switch off B+--> Below 1.0
  • Drive-by-wire relay
  • Related wiring harness
Ignition switch to the ON position Below 1.0
1AY Ignition switch Ignition switch Ignition switch off Below 1.0
  • Related wiring harness
Ignition switch to the ON position B+
1AZ GND GND Under any condition Below 1.0
  • Related wiring harness
1BA Back-up power supply Battery (positive terminal) Under any condition B+
  • Battery
  • Related wiring harness
1BB GND GND Under any condition Below 1.0
  • Related wiring harness
1BC - - - - -
1BD GND GND Under any condition Below 1.0
  • Related wiring harness
1BE B+ Main relay Ignition switch off after 15 min Below 1.0
  • Battery
  • Related wiring harness
Ignition switch to the ON position B+
1BF B+ Drive-by-wire relay Ignition switch off Below 1.0
  • Battery
  • Related wiring harness
Ignition switch to the ON position B+
1BG B+(1) Main relay Ignition switch off after 15 min Below 1.0
  • Battery
  • Related wiring harness
Ignition switch to the ON position B+
-(2) - - - -
1BH GND GND Under any condition Below 1.0
  • Related wiring harness
2A Throttle actuator control (+) Throttle actuator Ignition switch to the ON position B+
  • Throttle actuator
  • Related wiring harness
2B Throttle actuator control (-) Throttle actuator Idle (after warm up) Approx. 3.5-5.5
  • Throttle actuator
  • Related wiring harness
2C Purge control Purge solenoid valve
  • Purge solenoid valve
  • Related wiring harness
2D - - - - -
2E OCV control OCV
  • OCV valve
  • Related wiring harness
2F - - - - -
2G EGR valve #2 coil control EGR valve (terminal A) Ignition switch to the ON position B+
  • EGR valve
  • Related wiring harness
Idle B+
2H EGR valve #4 coil control EGR valve (terminal F) Ignition switch to the ON position B+
  • EGR valve
  • Related wiring harness
Idle B+
2I Variable tumble control Variable tumble solenoid valve ECT above 62 °C {143 °F} while idling. B+
  • Variable tumble solenoid valve
  • Related wiring harness
ECT below 63 °C {145 °F} and engine speed below 3,750 RPM Below 1.0
2J Variable intake air control Variable intake air solenoid valve Ignition switch to the ON position Below 1.0
  • Variable intake air solenoid valve
  • Related wiring harness
Engine speed: below 4,750 RPM [LF]/4,600 RPM [L3] Below 1.0
Engine speed: above 4,750 RPM [LF]/4,600 RPM [L3] B+
2K EGR valve #1 coil control EGR valve (terminal E) Ignition switch to the ON position Below 1.0
  • EGR valve
  • Related wiring harness
Idle Below 1.0
2L EGR valve #3 coil control EGR valve (terminal B) Ignition switch to the ON position B+
  • EGR valve
  • Related wiring harness
Idle B+
2M - - - - -
2N - - - - -
2O - - - - -
2P - - - - -
2Q Rear HO2S HO2S (rear) Ignition switch to the ON position Approx. 0
  • HO2S (rear)
  • Related wiring harness
Idle (after warm up) Alternates between 0 and 1.0
2R Middle HO2S HO2S (Middle) Ignition switch to the ON position Approx. 0
  • HO2S (Middle)
  • Related wiring harness
Idle (after warm up) Alternates between 0 and 1.0
2S CMP CMP sensor
  • CMP sensor
  • Related wiring harness
2T - - - - -
2U Knocking (+) KS Ignition switch to the ON position (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) Approx. 4.3
  • KS
  • Related wiring harness
2V Knocking (-) KS Ignition switch to the ON position (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) Below 1.0
  • KS
  • Related wiring harness
2W CKP CKP sensor
  • CKP sensor
  • Related wiring harness
2X GND (shield) KS harness, HO2S (front, middle, rear) harness, GND Under any condition Below 1.0
  • Related wiring harness
2Y - - - - -
2Z Sensor GND HO2S (front) Under any condition Below 1.0
  • Related wiring harness
2AA - - - - -
2AB - - - - -
2AC ATF temperature TFT sensor Ignition switch is turned to the ON position. TFT is 20 °C {68 °F} Approx. 3.3
  • TFT sensor
  • Related wiring harness
TFT is 40 °C {104 °F} Approx. 2.4
TFT is 60 °C {140 °F} Approx. 1.5
2AD Front HO2S HO2S (front) Idle (after warm up): Approx. 0 mA -
  • HO2S (front)
  • Related wiring harness
2AE Variable tumble shutter valve monitor Variable tumble shutter valve switch ECT above 63 °C {145 °F} while idling. B+
  • Variable tumble shutter valve switch
  • Related wiring harness
ECT below 63 °C {145 °F} and engine speed below 3,750 RPM Below 1.0
2AF - - - - -
2AG Manifold absolute pressure MAP sensor Ignition switch to the ON position (at sea level) Approx. 4.1
  • MAP sensor
  • Related wiring harness
Idle Approx. 1.4
2AH ECT ECT sensor Ignition switch to the ON position IAT 20 °C {68 °F} 3.04-3.14
  • ECT sensor
  • Related wiring harness
IAT 40 °C {104 °F} 2.09-2.21
IAT 60 °C {140 °F} 1.29-1.39
IAT 80 °C {176 °F} 0.76-0.83
IAT 100 °C {212 °F} 0.45-0.49
2AI Generator field coil control Generator (terminal D)
  • Following PIDs: IAT, ECT, RPM, VPWR, ALTT V
  • Generator
  • Related wiring harness
2AJ Generator output voltage Generator (terminal P)
  • Generator
  • Related wiring harness
2AK TP (No. 1) TP sensor No. 1 Ignition switch to the ON position APP closed 0.53-1.00
  • TP sensor
  • Related wiring harness
APP open 4.25-4.75
2AL TP (No. 2) TP sensor No. 2 Ignition switch to the ON position APP closed 4.00-4.47
  • TP sensor
  • Related wiring harness
APP open 0.25-0.75
2AM Constant voltage (VREF) CMP sensor Ignition switch to the ON position B+
  • CMP sensor
  • Related wiring harness
2AN - - - - -
2AO Constant voltage (VREF) TP sensor Ignition switch to the ON position Approx. 5.0
  • TP sensor
  • Related wiring harness
2AP Sensor GND TP sensor Under any condition Below 1.0
  • TP sensor
  • Related wiring harness
2AQ Constant voltage (VREF) CKP sensor Ignition switch to the ON position B+
  • CKP sensor
  • Related wiring harness
2AR - - - - -
2AS - - - - -
2AT IGT4 Ignition coil (No. 4 cylinders)
  • Ignition coil
  • Related wiring harness
2AU Constant voltage (VREF) MAP sensor, variable tumble shutter valve switch Ignition switch to the ON position Approx. 5.0
  • MAP sensor
  • Variable tumble shutter valve switch
  • Related wiring harness
2AV - - - - -
2AW IGT2 Ignition coil (No. 2 cylinders)
  • Ignition coil
  • Related wiring harness
2AX IGT3 Ignition coil (No. 3 cylinders)
  • Ignition coil
  • Related wiring harness
2AY Sensor GND Variable tumble shutter valve switch, ECT sensor, MAP sensor, HO2S (middle, rear) Under any condition Below 1.0
  • Variable tumble shutter valve switch
  • ECT sensor
  • MAP sensor
  • HO2S (middle, rear)
  • Related wiring harness
2AZ Fuel injection (#4) Fuel injector No. 4
  • Fuel injector No. 4
  • Related wiring harness
2BA IGT1 Ignition coil (No. 1 cylinders)
  • Ignition coil
  • Related wiring harness
2BB Fuel injection (#1) Fuel injector No. 1
  • Fuel injector No. 1
  • Related wiring harness
2BC Fuel injection (#2) Fuel injector No. 2
  • Fuel injector No. 2
  • Related wiring harness
2BD Fuel injection (#3) Fuel injector No. 3
  • Fuel injector No. 3
  • Related wiring harness
2BE Rear HO2S heater control HO2S (Rear) heater
  • HO2S (Rear) heater
  • Related wiring harness
2BF Middle HO2S heater control HO2S (Middle) heater
  • HO2S (Middle) heater
  • Related wiring harness
2BG Front HO2S heater control HO2S (Front) heater
  • HO2S (Front) heater
  • Related wiring harness
2BH GND GND Under any condition Below 1.0
  • Related wiring harness
(1) ATX
(2) MTX
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