Seintek S2800 - IAT Sensor; Knock Sensor

10-4
10.1.5. IAT Sensor
Measures and compares the signal from air temperature sensors.
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IAT Sensor
IAT SENSOR
BLACK TO SENSOR BODY OR
ENGINE (CHASSIS)
RED TO SENSOR OUTPUT
To engine (chassis)
To sensor output
Measured waveform decreases
as the sensor heats up.
Normal IAT Sensor waveform
10.1.6. Knock Sensor
Measures and compares the alternating current signal from engine knock sensors.
Path:
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Knock Sensor
KNOCK SENSOR
BLACK TO SENSOR BODY OR
ENGINE (CHASSIS)
RED TO SENSOR OUTPUT
To engine (chassis)
To knock sensor output
Tapping on the engine block near
the sensor makes the sensor to
produce a voltage.
Normal KNOCK Sensor waveform