Operation CHARM: Car repair manuals for everyone.

Air Flow Meter/Sensor

Air Flow Sensor
Between red power source terminal (32) and ground 10 - 14 ohms

Air Regulator
Resistance 45 - 50 ohms

Dropping Resistor
Between center terminal and any other terminal 5 - 7 ohms

Engine Coolant Temperature Sensor
-10°C (14°F) 7 - 12K ohms
10°C (50°F) 3 - 5K ohms
20°C (68°F) 2 - 3K ohms
50°C (122°F) 0.7 - 1K ohms
80°C (176°F) 0.2 - 0.4K ohms

Fuel Injectors
Resistance 2 - 3 ohms

Fuel Pump Relay
Resistance 80 ohms

Ignition Coil
Primary resistance 0.81 - 0.99 ohms
Secondary resistance 7.5 - 11.3K ohms

Oxygen Sensor
Voltage range approx. 0.30 - 0.80V

Starter Relay
Resistance 80 ohms

Vacuum Switching Valve
Resistance 36 ohms

Vehicle Speed Sensor
Signal to ECM 4 pulses per revolution