Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1991626 L4-2184CC 2.2L SOHC F2REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSPECIFICATIONSELECTRICAL SPECIFICATIONS
1991 Mazda 626 L4-2184cc 2.2L SOHC F2
Electrical Specifications
1991 Mazda 626 L4-2184cc 2.2L SOHC F2SECTION Electrical Specifications
IDLE SPEED [1] 750 ± 25 rpm (A/T in "P")
IGNITION TIMING [4] 6° ± 1° BTDC
AIRFLOW METER
Resistance value between terminals
E2 - Vs [2] 20 - 400 ohms
E2 - Vs [3] 20 - 1K ohms
E1 - Fc [2] infinity
E1 - Fc [3] 0 ohms
E2 - Vc 100 - 400 ohms
E2 - Vb 200 - 400 ohms
E2 - THA (intake air thermosensor) @
-4°F (-20°C) 13.6 - 18.4K ohms
68°F (20°C) 2.21 - 2.69K ohms
140°F (60°C) 493 - 667 ohms
CIRCUIT OPENING RELAY
Resistance value between terminals
STA - E1 21 - 43 ohms
B - Fc 109 - 226 ohms
B - Fp infinity
FUEL INJECTOR
Resistance value 12 - 16 ohms
IDLE SPEED CONTROL (ISC) VALVE
Resistance value 6.3 - 9.9 ohms
IGNITION COIL
Resistance value
Primary circuit 0.77 - 0.95 ohms
Secondary circuit 10.3 - 13.9K ohms
[1] Ground test connector.
[2] Airflow meter plate fully closed.
[3] Airflow meter plate fully open.
[4] Vacuum hoses disconnected and plugged.
IGNITION TIMING [4] 6° ± 1° BTDC
AIRFLOW METER
Resistance value between terminals
E2 - Vs [2] 20 - 400 ohms
E2 - Vs [3] 20 - 1K ohms
E1 - Fc [2] infinity
E1 - Fc [3] 0 ohms
E2 - Vc 100 - 400 ohms
E2 - Vb 200 - 400 ohms
E2 - THA (intake air thermosensor) @
-4°F (-20°C) 13.6 - 18.4K ohms
68°F (20°C) 2.21 - 2.69K ohms
140°F (60°C) 493 - 667 ohms
CIRCUIT OPENING RELAY
Resistance value between terminals
STA - E1 21 - 43 ohms
B - Fc 109 - 226 ohms
B - Fp infinity
FUEL INJECTOR
Resistance value 12 - 16 ohms
IDLE SPEED CONTROL (ISC) VALVE
Resistance value 6.3 - 9.9 ohms
IGNITION COIL
Resistance value
Primary circuit 0.77 - 0.95 ohms
Secondary circuit 10.3 - 13.9K ohms
[1] Ground test connector.
[2] Airflow meter plate fully closed.
[3] Airflow meter plate fully open.
[4] Vacuum hoses disconnected and plugged.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.