Circuit description

The sensor built in the air pressure sensor assembly detects an intake manifold pressure as a voltage. Also, the air pressure sensor assembly is not affected by air pressure variation caused by a change in altitude or other factors because it detects pressure inside the intake manifold via absolute pressure instead of barometric pressure as reference.

DTC DETECTION CONDITION

DTC No.	DTC detection condition	Suspected parts
P0107	Vacuum sensor voltage is 0.610V or less for 2.0 seconds or longer. (1-trip detection logic)	Open or short condition in vacuum sensor circuit Vacuum sensor ECM
P0108	Vacuum sensor voltage is 3.906V or more for 2.0 seconds or longer. (1-trip detection logic)

NOTE: After checking diagnostic code outputs, read the following menu items using the SSM3: [Inspection of BRZ]/[Each System Check]/[Engine Control System]/[Current Data Display & Save]/[Mani. Absolute Pressure]. (Refer to CURRENT DATA DISPLAY & SAVE/SYSTEM OPERATION CHECK MODE )

INTAKE MANIFOLD PRESSURE SPECIFICATIONS

Intake manifold pressure	Content of malfunction
Approx. 0 kPa	Short circuit in PIM circuit and ground system Short circuit in E1 circuit and PIM circuit
141 kPa or more	Short circuit in VC circuit and PIM circuit Open circuit in PIM circuit Open circuit in E1 circuit