Circuit/System Verification
WARNING: This page is about a different variant/trim than selected.
NOTE:
If you were sent here from DTC P0068, P0101, P0121, P0236, P1101 - Refer to: Circuit/System Testing.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC P0641, P0651, P0697, P06A3 is not set.
- If any of the DTCs are set
Refer to DTC P0641, P0651, P0697, or P06A3
- Go to next step: If none of the DTCs are set
- If any of the DTCs are set
- Verify the scan tool parameter: Throttle Body Idle Air Flow Compensation = Less than 90%
- If 90% or greater
- Go to next step: If less than 90%
- Perform the scan tool control function: Throttle Sweep - Start
Verify the scan tool parameter: Throttle Position Sensor and Sensor 2 = Agree
- If not the specified state
Refer to DTC P0121-P0123, P0222, P0223, P2135, U0606, or U0607
- Go to next step: If the specified state
- If not the specified state
- Verify the scan tool parameter:
- Manifold Absolute Pressure Sensor = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- Turbocharger/Supercharger Boost Pressure Sensor = The value should be within the range listed in the table: Altitude Versus Barometric Pressure
- If not in the specified range
- { Manifold Absolute Pressure Sensor } Refer to: Circuit/System Testing
- { Turbocharger/Supercharger Boost Pressure Sensor } Refer to DTC P0236, P0237, or P0238
- Go to next step: If in the specified range
- Verify the tool is available: GE-52250 Variable Pressure Leak Detector
- If the tool is not available
Refer to step 10
- Go to next step: If the tool is available
- If the tool is not available
- Perform the following procedure/test: Component/System Leak Test
Verify the procedure/test passes.
- If the procedure/test does not pass
Repair or replace as necessary
- Go to next step: If the procedure/test passes
- If the procedure/test does not pass
- Verify the following conditions do not exist:
- B65 Intake Manifold Pressure and Air Temperature Sensor - Visible Damage
- B75C Multifunction Intake Air Sensor - Contamination of the measuring element / Visible Damage/Water intrusion
- B111 Turbocharger/Supercharger Boost Pressure Sensor
- Restricted - Moisture/Ice
- Skewed
- Q38 Throttle Body
- Coking/Loose Clamps / Visible Damage
- Restricted - Moisture/Ice
- Air Cleaner Element - Dirty / Restricted
- Catalytic Converter & Exhaust System - Blocked / Leaking / Restricted / Visible Damage - Refer to Symptoms - Engine Exhaust
- Charge Air Cooler - Restricted / Moisture / Ice
- Intake Air Duct - Collapsed/Restricted / Visible Damage
- Intake Manifold - Restricted / Visible Damage
- Linkage @ M128 Turbocharger Wastegate Actuator - Binding or Sticking/Loose/Visible Damage
- Q40 Turbocharger Bypass Valve Solenoid - Binding or Sticking/Loose/Visible Damage
- Positive Crankcase Ventilation System - Restricted - Moisture/Ice
NOTE:It may be necessary to use a scan tool control function to operate a component.
- If a condition exists
Repair or replace as necessary
- Go to next step: If no condition exists
- Verify the following conditions do not exist: Engine - Mechanical Condition
- Compressor Air Intake Turbocharger or Turbine Shaft Seal - Leaking - Engine Oil
- Compressor Air Intake Turbocharger - Low oil pressure
- Compressor Air Intake Turbocharger - Mechanical Condition/Worn
- Camshaft Lobe (s) - Visible Damage/Worn
- Exhaust Valve or Intake Valve - Stuck Open/Visible Damage
- Exhaust Valve Seat or Intake Valve Seat - Visible Damage
- Piston - Cracked/Visible Damage
- Piston Ring - Seized/Visible Damage/Worn
NOTE:The list is not all encompassing - Refer to Symptoms - Engine Mechanical
- If a condition exists
Repair or replace as necessary
- Go to next step: If no condition exists
- Verify the conditions listed below do not exist:
- B65 Intake Manifold Pressure and Air Temperature Sensor - Leaking @ O-Ring - Missing / Visible Damage
- B75C Multifunction Intake Air Sensor - Contamination of the measuring element Cracked / Loose Clamps / Visible Damage/Water intrusion
- B111 Turbocharger/Supercharger Boost Pressure Sensor
- Leaking @ O-Ring - Missing / Visible Damage
- Restricted - Moisture/Ice
- Skewed
- M128 Turbocharger Wastegate Actuator - Linkage Binding or Sticking/Loose/Visible Damage
- Q40 Turbocharger Bypass Valve Solenoid - Binding or Sticking/Loose/Visible Damage
- Q38 Throttle Body
- Coking/Loose Clamps / Visible Damage
- Restricted - Moisture/Ice
- Air Cleaner Element - Dirty / Restricted
- Catalytic Converter - Blocked / Restricted/Visible Damage
- Charge Air Cooler
- Leaking / Incorrect connection
- Restricted - Moisture/Ice
- Engine - Mechanical Condition - Refer to Symptoms - Engine Mechanical
- Exhaust System - Leaking / Restricted Visible Damage - Refer to Symptoms - Engine Exhaust
- Intake Air Duct or Turbocharger Inlet Duct - Cracked / Leaking / Loose Clamps / Restricted / Visible Damage
- Intake Manifold - Cracked / Loose Clamps / Restricted / Vacuum leak/Visible Damage
- Positive Crankcase Ventilation System
- Leaking @ O-Ring - Missing / Visible Damage
- Restricted - Moisture/Ice
- Incorrect connection / Leaking / Restricted
- Turbocharger - Mechanical damage/Visible Damage - Refer to Compressor Air Intake Turbocharger System Description
- Vacuum leak @ Engine - Oil Level Indicator and Tube / Oil Filler Cap
NOTE:It may be necessary to use a scan tool control function to operate a component.
- If a condition exists
Repair or replace as necessary
- Go to next step: If no condition exists
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC is set
Refer to: Circuit/System Testing
- Go to next step: If the DTC is not set
- If the DTC is set
- All OK.