Mazda 323 Workshop Manual Supplement page 162

TURBOCHARGER CONTROL SYSTEM
F2
TURBOCHARGER
CONTROL
SYSTEM
PREPARATION
SST
49
HO80
740
Gauge. pressure
I
93GOF2-754
93GOF2-755
L
I
93GOF2-756
93GOF2-757
93GOF2-753
SYSTEM OPERATION
1. Install a pressure gauge 149 kPa (0.5 kg/cm2, 7.1 psi)
min.1.
2. Connect a tachometer to the diagnosis connector lG-
terminal.
3. Start the engine.
4. Verify that the boost pressure when the engine speed is
4,000 rpm is within specification.
Specification: More than 2.0 kPa ( 0.02 kg/cm2, 0.3 psi)
5. If not within the specification, check for air Ieakage, exhaust
gas leakage, and for the wastegate stuck open.
6. if OK, replace the turbocharger.
WASTEGATE
Inspection
1. Remove the air hose from the wastegate actuator.
2 Connect the SST to the actuator.
3. Raise the front of the vehicle and support it on safety stands.
4. Remove the undercover.
F2-45