Diagnostic Test
- ACTIVE DTC
- Ignition on, engine not running.
- With a scan tool, read DTCs.
Is the DTC active at this time?
Yes
- Go to step 2
No
- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- CHECKING FOR OTHER DTCS
- With the scan tool, read the PCM DTCs.NOTE: If there are any other MAP Sensor or Throttle Inlet Pressure Sensor DTCs present, repair the other MAP Sensor or Throttle Inlet Pressure Sensors before continuing.
Does the scan tool display any other DTCs?
Yes
- Refer to the symptom list and perform the appropriate diagnostic procedure.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Go to step 3
- With the scan tool, read the PCM DTCs.
- CHECKING THE HOSES AND TUBING NOTE: The exhaust system must be free from any restriction to perform this test.
- Check all of the tubes and hoses between the air cleaner and the intake manifold for loose connection, damage or restriction.
- Check all of the tubes connected to the intercooler for loose connection, damage or restriction.
- Check all of the tubes and hoses connected to the turbocharger, TIP Solenoid, Surge Solenoid and Wastegate Solenoid for loose connection, damage or restriction.NOTE: Solenoid design and hose connections are identical for all three solenoids. It is possible to connect the hoses to the incorrect solenoid. Verify that hoses are connected to the correct solenoid.
Are any of these conditions evident?
Yes
- Repair or replace as necessary.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Go to step 4
- (K153) TIP SIGNAL CIRCUIT OPEN
- Turn the ignition off.
- Disconnect the TIP Sensor harness connector.
- Disconnect the PCM harness connector.CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis.
- Measure the resistance of the (K153) TIP Signal circuit from the TIP Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 10.0 ohms?
Yes
- Go to step 5
No
- Repair the open in the (K153) TIP Signal circuit.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- (K914) SENSOR GROUND CIRCUIT OPEN
CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis.
- Measure the resistance of the (K914) Sensor ground circuit from the TIP Sensor harness connector to the appropriate terminal of special tool #8815.
Is the resistance below 10.0 ohms?
Yes
- Go to step 6
No
- Repair the open in the (K914) Sensor ground circuit.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- Measure the resistance of the (K914) Sensor ground circuit from the TIP Sensor harness connector to the appropriate terminal of special tool #8815.
- SOLENOID TEST #1
- Disconnect the hoses from the TIP Solenoid.
- Install a plug on the TIP Solenoid hose B connection point.
- Connect a vacuum pump to the TIP Solenoid hose A connection point.
- With vacuum pump apply 20 inches of vacuum to the TIP Solenoid hose A connection point.NOTE: Vacuum reading should not drop below 10 inches within 5 seconds.
Does vacuum read above 10 inches for at least 5 seconds?
Yes
- Go to step 7
No
- Replace the TIP Solenoid.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- SOLENOID TEST #2
- Install a plug on the TIP Solenoid hose C connection point.
- Connect a vacuum pump to the TIP Solenoid hose A connection point.
- Attempt to apply 20 inches of vacuum to the TIP Solenoid hose A connection point.NOTE: Vacuum should escape through the Solenoid hose B connection point.
Does vacuum escape through the Solenoid hose B connection point?
Yes
- Go to step 8
No
- Replace the TIP Solenoid.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- SOLENOID TEST #3
- Install a plug on TIP Solenoid hose C connection point.
- Connect a vacuum pump to the TIP Solenoid hose B connection point.NOTE: For the result of this test to be accurate the solenoid must be turned on. Apply 12 volts and Ground to the appropriate solenoid terminals to turn the solenoid on.
- With vacuum pump apply 20 inches of vacuum to the TIP Solenoid hose B connection point.NOTE: Vacuum reading should not drop below 10 inches within 5 seconds.
Does vacuum read above 10 inches for at least 5 seconds?
Yes
- Go to step 9
No
- Replace the TIP Solenoid.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- SOLENOID TEST #4
- Install a plug on the TIP Solenoid hose A connection point.
- Connect a vacuum pump to the TIP Solenoid hose B connection point.NOTE: For the result of this test to be accurate the solenoid must be turned on. Apply 12 volts and Ground to the appropriate solenoid terminals to turn the solenoid on.
- Attempt to apply 20 inches of vacuum to the TIP Solenoid hose B connection point.NOTE: Vacuum should escape through the Solenoid hose C connection point.
Does vacuum escape through the Solenoid hose C connection point?
Yes
- Replace the Throttle Inlet Pressure Sensor.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Replace the TIP Solenoid.
- Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .