Symptom List:
P0234-OVERBOOST PERFORMANCE
P1106-BARO SOLENOID PERFORMANCE
P1188 TIP SENSOR PERFORMANCE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0234-OVERBOOST PERFOR-
MANCE.
When Monitored and Set Condition:
P0234-OVERBOOST PERFORMANCE
When Monitored: With the engine running.
Set Condition: The TIP Sensor signal indicates excessive boost pressure.
P1106-BARO SOLENOID PERFORMANCE
When Monitored: With the engine in turbocharger boost mode.
Set Condition: The PCM does not detect sufficient difference between TIP Sensor signal
and BARO Pressure signal during turbocharger boost mode.
P1188 TIP SENSOR PERFORMANCE
When Monitored: During the engine turbocharger boost and non-boost modes.
Set Condition: Non-boost Mode: PCM detects a significant difference between TIPSensor
signal and BARO Pressure signal. Boost Mode: The TIP Sensor is unable to read correct
boost level.
POSSIBLE CAUSES
CHECKING FOR OTHER DTCS
CHECKING THE HOSES AND TUBING
CHECKING THE VACUUM SUPPLY TO SURGE SOLENOID
CONFIRM ALL SOLENOID TEST
GOOD TRIP EQUAL TO ZERO
SOLENOID #3 TEST
SOLENOID TEST #1
SOLENOID TEST #2
SOLENOID TEST #4
TURBOCHARGER
WASTEGATE ACTUATOR
115
DRIVEABILITY - NGC
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