P1188

Test 1 - 5:

Test 6 - 9:

Test 10:

SYMPTOM
P0234-OVERBOOST PERFORMANCE

TEST NOTE
This symptom is diagnosed using the test P0234-OVERBOOST PERFORMANCE.

WHEN MONITORED
During the engine turbocharger boost and non-boost modes.

SET CONDITION
Non-boost Mode: PCM detects a significant difference between TIP Sensor 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 TEST #1
- Solenoid TEST #2
- Solenoid TEST #3
- solenoid TEST #4
- Turbocharger
- Wastegate actuator