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Without Using the M-MDS

NOTE:
  • Because the PCM uses a waterproof connector, the inspection for the voltage/wave pattern cannot be performed. The following values are for reference.

Terminal voltage table (Reference) 

Fig 1: Locating PCM Harness Side Connector
G09785487Courtesy of MAZDA MOTORS CORP.

-: Not applicable

Terminal Signal Connected to Test condition Voltage (V) Inspection item
1A (1) CAN_2H CAN system related modules Because this terminal is for CAN, integrity determination by terminal voltage is not possible.
  • Related wiring harness
1B (1) CAN_2L CAN system related modules Because this terminal is for CAN, integrity determination by terminal voltage is not possible.
  • Related wiring harness
1C - - - - -
1D Knocking (-) KS Ignition switched ON (engine off) (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) Approx. 1.65
  • KS
  • Related wiring harness
1E - - - - -
1F - - - - -
1G - - - - -
1H Knocking (+) KS Ignition switched ON (engine off) (Use digital type voltmeter, because measurement voltage will be detected less than true voltage when using analog type voltmeter) Approx. 3.38
  • KS
  • Related wiring harness
1I GND Sensor shield Under any condition Below 1.0
  • Related wiring harness
1J Electric variable valve timing motor (rotation direction) Electric variable valve timing motor/driver (See ELECTRIC VARIABLE VALVE TIMING MOTOR (ROTATION DIRECTION) SIGNAL .)
  • Electric variable valve timing motor/driver
  • Related wiring harness
1K (2) Neutral position Neutral switch Shift lever is at neutral position Below 1.0
  • Neutral switch
  • Related wiring harness
Shift lever is not at neutral position B+
1L (2) Back-up light Back-up light switch Shift lever is at R position Below 1.0
  • Back-up light switch
  • Related wiring harness
Shift lever is not at R position B+
1M - - - - -
1N - - - - -
10 Electric variable valve timing motor (rotation pulse) Electric variable valve timing motor/driver (See ELECTRIC VARIABLE VALVE TIMING MOTOR (ROTATION PULSE) SIGNAL .)
  • Electric variable valve timing motor/driver
  • Related wiring harness
1P 0il pressure 0il pressure switch Ignition switched 0N (engine off) Below 1.0
  • 0il pressure switch
  • Related wiring harness
Idle (after warm up) B+
1Q - - - - -
1R - - - - -
1S - - - - -
1T Exhaust CMP Exhaust CMP sensor (See Exhaust CMP signal .)
  • Exhaust CMP sensor
  • Related wiring harness
1U - - - - -
1V - - - - -
1W A/F A/F sensor Idle (after warm up) Approx. 4.2
  • A/F sensor
  • Related wiring harness
1X GND Exhaust CMP sensor Under any condition Below 1.0
  • Related wiring harness
1Y Intake CMP Intake CMP sensor (See Intake CMP signal .)
  • Intake CMP sensor
  • Related wiring harness
1Z (5) Generator output voltage Generator (See Generator output voltage.)
  • Generator
  • Related wiring harness
1AA - - - - -
1AB A/F A/F sensor Idle (after warm up): 0 mA
  • A/F sensor
  • Related wiring harness
1AC GND Intake CMP sensor Under any condition Below 1.0
  • Related wiring harness
1AD CKP CKP sensor (See CKP signal.)
  • CKP sensor
  • Related wiring harness
1AE Electric variable valve timing driver (diagnostic) Electric variable valve timing motor/driver (See ELECTRIC VARIABLE VALVE TIMING DRIVER (DIAGNOSTIC) SIGNAL .)
  • Electric variable valve timing motor/driver
  • Related wiring harness
1AF (4) Generator output voltage Generator (See Generator output voltage.)
  • Generator
  • Related wiring harness
1AG A/F A/F sensor Idle (after warm up) Approx. 3.48
  • A/F sensor
  • Related wiring harness
1AH GND CKP sensor Under any condition Below 1.0
  • Related wiring harness
1AI Purge control Purge solenoid valve (See Purge control .)
  • Purge solenoid valve
  • Related wiring harness
1AJ IGT4 Ignition coil No. 4 (See IGT1, IGT2, IGT3, IGT4 control.)
  • Ignition coil No. 4
  • Related wiring harness
1AK ECT ECT sensor No. 1 Ignition switched ON (engine off) ECT 20 °C
{68 °F}
Approx. 3.10
  • ECT sensor No. 1
  • Related wiring harness
ECT 40 °C
{104°F}
Approx. 2.16
ECT 60 °C
{140°F}
Approx. 1.40
ECT 80 °C
{176 °F}
Approx. 0.87
ECT 100 °C
{212 °F}
Approx. 0.54
1AL - - - - -
1AM GND ECT sensor No. 1 Under any condition Below 1.0
  • Related wiring harness
1AN Hydraulic variable valve timing control OCV (See HYDRAULIC VARIABLE VALVE TIMING CONTROL SIGNAL .)
  • OCV
  • Related wiring harness
1AO IGT3 Ignition coil No. 3 (See IGT1, IGT2, IGT3, IGT4 control.)
  • Ignition coil No. 3
  • Related wiring harness
1AP - - - - -
1AQ - - - - -
1AR - - - - -
1AS Engine oil control Engine oil solenoid valve (See Engine oil control signal.)
  • Engine oil solenoid valve
  • Related wiring harness
1AT IGT2 Ignition coil No. 2 (See IGT1, IGT2, IGT3, IGT4 control.)
  • Ignition coil No. 2
  • Related wiring harness
1AU - - - - -
1AV Ion (No. 4) Ion sensor No. 4 Idle (after warm up) Approx. 4.55
  • Ion sensor No. 4
  • Related wiring harness
1AW - - - - -
1AX - - - - -
1AY IGT1 Ignition coil No. 1 (See IGT1, IGT2, IGT3, IGT4 control.)
  • Ignition coil No. 1
  • Related wiring harness
1AZ Electric variable valve timing control Electric variable valve timing motor/driver (See Electric variable valve timing control signal.)
  • Electric variable valve timing motor/driver
  • Related wiring harness
1BA Ion (No. 3) Ion sensor No. 3 Idle (after warm up) Approx. 4.55
  • Ion sensor No. 3
  • Related wiring harness
1BB GND Sensor shield Under any condition Below 1.0
  • Related wiring harness
1BC - - - - -
1BD - - - - -
1BE (4) Generator field coil control Generator (See Generator field coil control signal.)
  • Generator
  • Related wiring harness
1BF Ion (No. 2) Ion sensor No. 2 Idle (after warm up) Approx. 4.55
  • Ion sensor No. 2
  • Related wiring harness
1BG GND Sensor shield Under any condition Below 1.0
  • Related wiring harness
1BH - - - - -
1BI - - - - -
1BJ Constant voltage (Vref) Fuel pressure sensor Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
1BK Ion (No. 1) Ion sensor No. 1 Idle (after warm up) Approx. 4.55
  • Ion sensor No. 1
  • Related wiring harness
1BL GND Sensor shield Under any condition Below 1.0
  • Related wiring harness
1BM - - - - -
1BN Constant voltage (Vref) CKP sensor Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
1BO Constant voltage (Vref) MAP sensor Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
1BP TP (No. 1) TP sensor No. 1 Ignition switched ON (engine off) Accelerator pedal released Approx. 1.11
  • TP sensor No. 1
  • Related wiring harness
Accelerator pedal fully depressed Approx. 4.59
1BQ GND TP sensor No. 1, TP sensor No. 2 Under any condition Below 1.0
  • Related wiring harness
1BR (5) Generator field coil control Generator (See Generator field coil control signal.)
  • Generator
  • Related wiring harness
1BS Constant voltage (Vref) TP sensor No. 1, TP sensor No. 2 Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
1BT - - - - -
1BU TP (No. 2) TP sensor No. 2 Ignition switched ON (engine off) Accelerator pedal released Approx. 3.92
  • TP sensor No. 2
  • Related wiring harness
Accelerator pedal fully depressed Approx. 0.41
1BV - - - - -
1BW MAP MAP sensor Ignition switched ON (engine off) Approx. 4.07
  • MAP sensor
  • Related wiring harness
Idle (after warm up) Approx. 1.34
Racing
(Engine speed: 2, 000 RPM)
Approx. 1.05
1BX GND MAP sensor, IAT sensor No. 2 Under any condition Below 1.0
  • Related wiring harness
1BY A/F sensor heater control A/F sensor heater (See A/F sensor heater control signal.)
  • A/F sensor heater
  • Related wiring harness
1BZ GND GND Under any condition Below 1.0
  • Related wiring harness
1CA Fuel pressure Fuel pressure sensor Ignition switched ON (engine off) Approx. 1.22  
Idle (after warm up)   Approx. 1.06
1CB GND Fuel pressure sensor Under any condition Below 1.0
  • Related wiring harness
1CC Drive-by-wire control (-) Throttle valve actuator Ignition switched ON (engine off) Approx. 10.51
  • Throttle valve actuator
  • Related wiring harness
Idle (after warm up) B+
1CD - - - - -
1CE IAT (No. 2) IAT sensor No. 2 Ignition switched ON (engine off) IAT 20 °C {68 °F} Approx. 3.57
  • IAT sensor No. 2
  • Related wiring harness
IAT 40 °C {104°F} Approx. 2.70
IAT 60 °C {140 °F} Approx. 1.87
1CF - - - - -
1CG Drive-by-wire control (+) Throttle valve actuator (See Drive-by-wire control (+) signal.)
  • Throttle valve actuator
  • Related wiring harness
1CH - - - - -
1CI - - - - -
1CJ - - - - -
1CK Battery voltage Main relay Ignition switched ON (engine off) B+
  • Main relay
  • Related wiring harness
1CL GND GND Under any condition Below 1.0
  • Related wiring harness
1CM - - - - -
1CN - - - - -
1CO Battery voltage Fuel injector relay Ignition switched ON (engine off) B+
  • Fuel injector relay
  • Related wiring harness
1CP GND GND Under any condition Below 1.0
  • Related wiring harness
1CQ - - - - -
1CR - - - - -
1CS Battery voltage Fuel injector relay Ignition switched ON (engine off) B+
  • Fuel injector relay
  • Related wiring harness
1CT GND GND Under any condition Below 1.0
  • Related wiring harness
1CU - - - - -
1CV - - - - -
1CW Battery voltage Fuel injector relay Ignition switched ON (engine off) B+
  • Fuel injector relay
  • Related wiring harness
1CX GND GND Under any condition Below 1.0
  • Related wiring harness
1CY - - - - -
1CZ - - - - -
1DA Battery voltage Fuel injector relay Ignition switched ON (engine off) B+
  • Fuel injector relay
  • Related wiring harness
1DB GND GND Under any condition Below 1.0
  • Related wiring harness
1DC - - - - -
1DD - - - - -
1DE - - - - -
1DF - - - - -
1DG Battery voltage Fuel injector relay Ignition switched ON (engine off) B+
  • Fuel injector relay
  • Related wiring harness
1DH GND GND Under any condition Below 1.0
  • Related wiring harness
1DI - - - - -
1DJ - - - - -
1DK Battery voltage Fuel injector relay Ignition switched ON (engine off) B+
  • Fuel injector relay
  • Related wiring harness
1DL GND GND Under any condition Below 1.0
  • Related wiring harness
1DM - - - - -
1DN - - - - -
1DO Fuel injection control (-) Fuel injector No. 1 (See Fuel injection control (-) signal.)
  • Fuel injector No. 1
  • Related wiring harness
1DP Fuel injection control (+) Fuel injector No. 1 (See Fuel injection control (+) signal.)
  • Fuel injector No. 1
  • Related wiring harness
1DQ - - - - -
1DR - - - - -
1DS Fuel injection control (-) Fuel injector No. 4 (See Fuel injection control (-) signal.)
  • Fuel injector No. 4
  • Related wiring harness
1DT Fuel injection control (+) Fuel injector No. 4 (See Fuel injection control (+) signal.)
  • Fuel injector No. 4
  • Related wiring harness
1DU - - - - -
1DV - - - - -
1DW Fuel injection control (-) Fuel injector No. 2 (See Fuel injection control (-) signal.)
  • Fuel injector No. 2
  • Related wiring harness
1DX Fuel injection control (+) Fuel injector No. 2 (See Fuel injection control (+) signal.)
  • Fuel injector No. 2
  • Related wiring harness
1DY - - - - -
1DZ - - - - -
1EA Fuel injection control (-) Fuel injector No. 3 (See Fuel injection control (-) signal.)
  • Fuel injector No. 3
  • Related wiring harness
1EB Fuel injection control (+) Fuel injector No. 3 (See Fuel injection control (+) signal.)
  • Fuel injector No. 3
  • Related wiring harness
1EC - - - - -
1ED - - - - -
1EE High pressure fuel pump control (+) High pressure fuel pump (See High pressure fuel pump control (+) signal.)
  • High pressure fuel pump
  • Related wiring harness
1EF High pressure fuel pump control (-) High pressure fuel pump (See High pressure fuel pump control (-) signal.)
  • High pressure fuel pump
  • Related wiring harness
1EG - - - - -
1EH - - - - -
1EI - - - - -
1EJ - - - - -
2A - - - - -
2B - - - - -
2C HO2S heater control HO2S heater (See HO2S heater control signal.)
  • HO2S heater
  • Related wiring harness
2D - - - - -
2E - - - - -
2F (3) ECT (No. 2) ECT sensor No. 2 Ignition switched ON (engine off) ECT 20 °C {68 °F} Approx. 3.10
  • ECT sensor No. 2
  • Related wiring harness
ECT 40 °C {104°F} Approx. 2.16
ECT 60 °C {140 °F} Approx. 1.40
ECT 80 °C {176 °F} Approx. 0.87
ECT 100 °C {212 °F} Approx. 0.54
2G Brake (No. 1) Brake switch (No. 1 signal) Brake pedal released Below 1.0
  • Brake switch (No. 1 signal)
  • Related wiring harness
Brake pedal fully depressed B+
2H Ignition (IG1) IG1 relay Ignition switched ON (engine off) B+
  • IG1 relay
  • Related wiring harness
2I Ambient temperature Ambient temperature sensor Ignition switched ON (engine off) AAT 20 °C {68 °F} Approx. 2.70
  • Ambient temperature sensor
  • Related wiring harness
AAT 30 °C {104°F} Approx. 1.80
2J(2) CPP CPP switch, start stop unit Clutch pedal fully depressed Below 1.0
  • CPP switch
  • Start stop unit
  • Related wiring harness
Clutch pedal released B+
2K Main relay control Main relay Ignition switched ON (engine off) Approx. 0.8
  • Main relay
  • Related wiring harness
2L (5) DC-DC converter control DC-DC converter Idle (after warm up) 0 or B+
  • DC-DC converter
  • Related wiring harness
2M (7) Clutch stroke sensor Clutch stroke sensor Ignition switched ON (engine off) Clutch pedal released Approx. 0.6
  • Clutch stroke sensor
  • Related wiring harness
Clutch pedal fully depressed Approx. 4.5
2N - - - - -
2O Battery voltage Battery Ignition switched ON (engine off) B+
  • Battery
  • Related wiring harness
2P - - - - -
2Q - - - - -
2R Brake (No. 2) Brake switch (No. 2 signal) Brake pedal released Below 1.0
  • Brake switch (No. 2 signal)
  • Related wiring harness
Brake pedal fully depressed B+
2S Battery voltage Main relay Ignition switched ON (engine off) B+
  • Main relay
  • Related wiring harness
2T Battery voltage Main relay Ignition switched ON (engine off) B+
  • Main relay
  • Related wiring harness
2U IAT (No. 1) IAT sensor No. 1 Ignition switched ON (engine off) IAT 20 °C {68 °F} Approx. 2.70
  • IAT sensor No. 1
  • Related wiring harness
IAT 40 °C {104°F} Approx. 1.80
IAT 60 °C {140 °F} Approx. 1.20
2V - - - - -
2W (5) DC-DC converter control DC-DC converter Idle (after warm up) 0 or B+
  • DC-DC converter
  • Related wiring harness
2X - - - - -
2Y (3) Fuel tank pressure Fuel tank pressure sensor Fuel tank pressure is 10 kPa {0.10 kgf/cm2, 1.5 psi} lower than barometric pressure. Approx. 1.2
  • Fuel tank pressure sensor
  • Related wiring harness
Fuel tank pressure is equal to barometric pressure. Approx. 2.6
Fuel tank pressure is 6 kPa {0.06 kgf/cm2, 0.9 psi} higher than barometric pressure. Approx. 3.7
2Z (5) Active air shutter control (LIN) Active air shutter Because this terminal is for LIN, good/no good judgment by terminal voltage is not possible.
  • Active air shutter
  • Related wiring harness
2AA GND GND Under any condition Below 1.0
  • Related wiring harness
2AB - - - - -
2AC - - - - -
2AD GND Sensor shield Under any condition Below 1.0
  • Related wiring harness
2AE Fuel pump control Fuel pump control module (See Fuel pump control signal.)
  • Fuel pump control module
  • Related wiring harness
2AF A/C cut-off control A/C relay A/C relay OFF B+
  • A/C relay
  • Related wiring harness
A/C relay ON Below 1.0
2AG HO2S (-) HO2S Idle (after warm up) Approx. 1.65
  • HO2S
  • Related wiring harness
2AH (7) GND Cutch stroke sensor Under any condition Below 1.0
  • Related wiring harness
2AI HO2S (+) HO2S Idle (after warm up) Approx. 2.49
  • HO2S
  • Related wiring harness
2AJ GND Refrigerant pressure sensor (6), fuel tank pressure sensor (3), ECT sensor No. 2 (3), ambient temperature sensor Under any condition Below 1.0
  • Related wiring harness
2AK HS CAN_H CAN system related modules Because this terminal is for CAN, integrity determination by terminal voltage is not possible.
  • Related wiring harness
2AL HS CAN_L CAN system related modules Because this terminal is for CAN, integrity determination by terminal voltage is not possible.
  • Related wiring harness
2AM Fuel pump control module (diagnostic) Fuel pump control module (See Fuel pump control module (diagnostic) signal.)
  • Fuel pump control module
  • Related wiring harness
2AN APP (No. 1) APP sensor No. 1 Ignition switched ON (engine off) Accelerator pedal released
Accelerator pedal fully depressed
Approx. 0.75
Approx. 4.1
  • APP sensor No. 1
  • Related wiring harness
2AO GND APP sensor No. 1 Under any condition Below 1.0
  • Related wiring harness
2AP - - - - -
2AQ Fuel pump control Fuel pump relay Ignition switched ON (engine off) B+
  • Fuel pump relay
  • Related wiring harness
Idle (after warm up) Below 1.0
2AR Constant voltage (Vref) APP sensor No. 1 Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
2AS APP (No. 2) APP sensor No. 2 Ignition switched ON (engine off) Accelerator pedal released Approx. 0.38
  • APP sensor No. 2
  • Related wiring harness
Accelerator pedal fully depressed Approx. 2.05
2AT GND APP sensor No. 2 Under any condition Below 1.0
  • Related wiring harness
2AU Cooling fan control Cooling fan relay No. 1 Cooling fan operating Below 1.0
  • Cooling fan relay No. 1
  • Related wiring harness
Cooling fan not operating B+
2AV Cooling fan control Cooling fan relay No. 2, No. 3 Cooling fan operating Below 1.0
  • Cooling fan relay No. 2, No. 3
  • Related wiring harness
Cooling fan not operating B+
2AW Constant voltage (Vref) APP sensor No. 2 Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
2AX (6) Refrigerant pressure Refrigerant pressure sensor Refrigerant pressure: 1.0 MPa {10 kgf/cm 2, 145 psi} Approx. 1.58
  • Refrigerant pressure sensor
  • Related wiring harness
Refrigerant pressure: 1.1 MPa {11 kgf/cm 2, 160 psi} Approx. 1.75
Refrigerant pressure: 1.2 MPa {12 kgf/cm 2, 174 psi} Approx. 1.88
2AY GND MAF sensor, IAT sensor No. 1 Under any condition Below 1.0
  • Related wiring harness
2AZ Starter cut-off control Starter relay, start stop unit Ignition switched ON (engine off) MTX
  • Clutch pedal released ATX
  • Selector lever position is not P or N position
B+
  • Starter relay
  • Start stop unit
  • Related wiring harness
MTX
  • Clutch pedal fully depressed ATX
  • Selector lever position is P or N position
Below 1.0
2BA - - - - -
2BB Constant voltage (Vref) Fuel tank pressure sensor (3), Refrigerant pressure sensor (6), MAF sensor Ignition switched ON (engine off) Approx. 5.0
  • Related wiring harness
2BC MAF MAF sensor Ignition switched ON (engine off) Approx. 0.72
  • MAF sensor
  • Related wiring harness
Idle (after warm up) Approx. 0.86
Racing (Engine speed: 2, 000 RPM) Approx. 1.07
2BD Selector lever position(1) TCM, start stop unit Selector lever position is not P or N position B+
  • TCM
  • Start stop unit
  • Related wiring harness
Selector lever position is P or N position Below 1.0
Starter interlock(2) Starter interlock switch, start stop unit Clutch pedal fully depressed Below 1.0
  • Starter interlock switch
  • Start stop unit
  • Related wiring harness
Clutch pedal released B+
2BE - - - - -
2BF (3) CV solenoid control CV solenoid valve Ignition switched ON (engine off) B+
  • CV solenoid valve
  • Related wiring harness
Idle (CV solenoid valve not operating) B+
Idle (CV solenoid valve operating) Below 1.0
2BG (7) Constant voltage (Vref) Clutch stroke sensor Switch ignition ON (engine off) Approx. 5.0
  • Related wiring harness
2BH - - - - -
(1) ATX
(2) MTX
(3) U.S.A. and CANADA
(4) Vehicles without i-ELOOP
(5) Vehicles with i-ELOOP
(6) Vehicles with refrigerant pressure sensor
(7) Vehicles with electric parking brake (MTX)