Intake Air Temperature Sensor

For testing information, see SELF-DIAGNOSTICS article.

INTAKE MANIFOLD PRESSURE SENSOR VOLTAGE ⁽¹⁾

Application

Volts

Forester, Impreza 2.5L & Legacy A/T

ECM Connector B136 Terminal No. 5 & Ground ⁽²⁾

Engine On

2.4-4.8

At Idle

0.4-1.8

Legacy M/T

ECM Connector B136 Terminal No. 5

Engine On

3.4-3.6

At Idle

1.2-1.8

⁽¹⁾	For further testing, see SELF-DIAGNOSTICS article.

⁽²⁾	Connect DVOM between indicated ECM terminal and ground.

KNOCK SENSOR (KS) RESISTANCE ⁽¹⁾

Application

Ohms

Forester, Impreza 2.5L & Legacy A/T

400,000-700,000

⁽¹⁾	Check resistance between ground and sensor connector terminal.