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EC-1616
[YD (WITHOUT EURO-OBD)]
DTC P0234 TC SYSTEM
5. CHECK TURBOCHARGER BOOST CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR
OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 6 and turbocharger boost control solenoid valve termi-
nals 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK TURBOCHARGE BOOST CONTROL SOLENOID VALVE
Refer to EC-1617, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace turbocharger boost control solenoid valve.
7. CHECK VACUUM PUMP
Refer to EM-167, "
VACUUM PUMP" .
OK or NG
OK >> GO TO 8.
NG >> Replace vacuum pump assembly.
8. CHECK TURBOCHARGER BOOST CONTROL ACTUATOR
1. Turn ignition switch OFF.
2. Install a vacuum pump to turbocharger boost control actuator.
3. Make sure that the turbocharger boost control actuator rod
moves smoothly when applying vacuum of -53.3kPa (-533mbar,
-400mmHg, -15.75inHg) and releasing it.
OK or NG
OK >> GO TO 9.
NG >> Replace turbocharger assembly.
9. CHECK TURBOCHARGER BOOST SENSOR
Refer to EC-1623, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace turbocharger boost sensor.
10. CHECK INTERMITTENT INCIDENT
Refer to EC-1520, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.
MBIB1022E
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