Diagnosis Procedure
- CHECK COMPONENT FUNCTION-1
With CONSULT
- Turn ignition switch ON.
- On CONSULT screen, select "ENGINE" >> "ACTIVE TEST" >> "BOOST PRESSURE CONTROL".
- Start the engine and let it idle.
- Check that the value of "BOOST PRES POSITNR DUTY" is between 87% and 100%.
Is the inspection result normal?
YES
GO TO 7.
NO
GO TO 2.
- CHECK FUSE
- Turn ignition switch OFF.
- Pull out #214 (10A) fuse.
- Check that the fuse is not fusing.
Is the inspection result normal?
YES
GO TO 3.
NO
Replace the fuse after repairing the applicable circuit.
- CHECK BOOST PRESSURE CONTROL VACUUM TRANSDUCER POWER SUPPLY
- Reinsert the fuse which pulled out.
- Disconnect boost pressure control vacuum transducer harness connector.
- Turn ignition switch ON.
- Check the voltage between boost pressure control vacuum transducer harness connector and ground.
+
-
Voltage
Boost pressure control vacuum transducer
Connector
Terminal
F168
1
Ground
Battery voltage
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 4.
- CHECK BOOST PRESSURE CONTROL VACUUM TRANSDUCER POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Pull out #214 (10 A) fuse.
- Check the continuity between boost pressure control vacuum transducer harness connector and fuse terminal.
+
-
Continuity
Boost pressure control vacuum transducer
Connector
Terminal
F168
1
#214 fuse terminal
Existed
- Also check harness for short to ground.
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
Repair or replace error-detected parts.
- CHECK BOOST PRESSURE CONTROL VACUUM TRANSDUCER
Check boost pressure control vacuum transducer. Refer to Component Inspection (Boost Pressure Control Vacuum Transducer) .
Is the inspection result normal?
YES
GO TO 6.
NO
Replace boost pressure control vacuum transducer.
- CHECK BOOST PRESSURE CONTROL VACUUM TRANSDUCER CONTROL CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between ECM harness connector and boost pressure control vacuum transducer harness connector.
+
-
Continuity
ECM
Boost pressure control vacuum transducer
Connector
Terminal
Connector
Terminal
F149
51
F168
2
Existed
- Also check harness for short to ground.
Is the inspection result normal?
YES
INSPECTION END
NO
Repair or replace error-detected parts.
- CHECK COMPONENT FUNCTION-2
- Set the vehicle to the following conditions.
Item
Condition
Engine speed
Idle
Engine coolant temperature
Less than 75 deg.C (167 deg.F)
Electrical load
OFF
- Perform Active Test.
- Check that the turbocharger control rod moves smoothly by visually check.CAUTION: Never operate the control rod by hand.
Is the inspection result normal?
YES
GO TO 9.
NO
GO TO 8.
- Set the vehicle to the following conditions.
- CHECK VACUUM PRESSURE
- Turn ignition switch OFF.
- Disconnect vacuum hose at boost pressure control vacuum transducer.
- Connect vacuum tester.
- Start the engine and let it idle.
- Check that the vacuum pressure is more than -75 kPa (-750 mbar, -0.765 kg/cm2 , -10.9 psi).
Is the inspection result normal?
YES
GO TO 9.
NO
Check vacuum line leakage, or vacuum pump performance.
- CHECK COMPONENT
Check the following.
- Pressure sensor upstream of throttle valve (foreign matter is caught.)
- Turbocharger (obstructed movement)
- Exhaust gas pressure
- Charge air leakage
- Divert air switchover valve diaphragm
INSPECTION END