Mazda Workshop Service and Repair Manuals

Air Flow Meter/Sensor: Specifications

IDLE SPEED [1] Except Canada ..................................................................................................................................................................  750 ± 50 RPM

IDLE SPEED [4] Canada only ......................................................................................................................................................................  800 ± 50 RPM

IGNITION TIMING [1]  ............................................................................................................................................................................  10° ± 1° BTDC

AIRFLOW METER

Resistance value between terminals

E2 - Vs [2] .................................................................................................................................................................................................  200 - 600 ohms
E2 - Vs [3] .................................................................................................................................................................................................  20 - 1.2K ohms
E1 - Fc [2] ...............................................................................................................................................................................................................  infinity
E1 - Fc [3] ...............................................................................................................................................................................................................  0 ohms
E2 - Vc ......................................................................................................................................................................................................  200 - 400 ohms
E2 - THA (intake air thermosensor) @

-4°F (-20°C) ........................................................................................................................................................................................  13.3 - 18.4K ohms
68°F (20°C) ........................................................................................................................................................................................  2.21 - 26.9K ohms
140°F (60°C) ...........................................................................................................................................................................................  493 - 667 ohms

CIRCUIT OPENING RELAY

Resistance value between terminals, key "OFF"

STA - E1 .......................................................................................................................................................................................................  21 - 43 ohms
B - Fc .........................................................................................................................................................................................................  109 - 226 ohms
B - Fp ......................................................................................................................................................................................................................  infinity

Voltage between terminal and ground, key "ON"

Fp ................................................................................................................................................................................................................................   0 V
Fc ................................................................................................................................................................................................................................  12 V
B ................................................................................................................................................................................................................................   12 V
STA .............................................................................................................................................................................................................................   0 V
E1 ................................................................................................................................................................................................................................   0 V

Voltage between terminal and ground, key "START"

Fp ...............................................................................................................................................................................................................................  12 V
Fc .................................................................................................................................................................................................................................   0 V
B .................................................................................................................................................................................................................................  12 V
STA ............................................................................................................................................................................................................................  12 V
E1 ................................................................................................................................................................................................................................   0 V

Voltage between terminal and ground at IDLE

Fp ...............................................................................................................................................................................................................................  12 V
Fc .................................................................................................................................................................................................................................   0 V
B .................................................................................................................................................................................................................................  12 V
STA .............................................................................................................................................................................................................................   0 V
E1 ................................................................................................................................................................................................................................   0 V

FUEL INJECTOR

Resistance value ..............................................................................................................................................................................................  12 - 16 ohms

IDLE SPEED CONTROL VALVE

Resistance value ..............................................................................................................................................................................................  11 - 13 ohms

PURGE CONTROL SOLENOID VALVE

Resistance value ..............................................................................................................................................................................................  23 - 27 ohms

WATER THERMOSENSOR

Resistance value @

68°F (20°C) .........................................................................................................................................................................................   2.21 - 2.69K ohms
104°F (40°C) ...........................................................................................................................................................................................   1.0 - 1.3K ohms
176°F (80°C) .......................................................................................................................................................................................   0.29 - 0.35K ohms

[1]

With test connector grounded, transmission in neutral (M/T) or "P" (A/T).

[2]

Airflow meter plate fully closed.

[3]

Airflow meter plate fully open.

[4]

Parking brake applied and with test connector grounded, transmission in neutral (M/T) or "P" (A/T), Canada only.