P0045-BOOST PRESSURE SOLENOID OPEN CIRCUIT





For a complete wiring diagram Refer to Section 8W


  • When Monitored:

    With the ignition on and the ECM Boost Pressure Solenoid command off.

  • Set Condition:

    The ECM does not detect voltage on the Boost Pressure Solenoid Control circuit.


Possible Causes
  
ASD RELAY OUTPUT CIRCUIT OPEN
  
BP SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
  
BP SOLENOID CONTROL CIRCUIT OPEN
  
BOOST PRESSURE SOLENOID
  
ENGINE CONTROL MODULE
  



Diagnostic Test

1.CHECK FOR ACTIVE DTC

NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions under which the DTC was set. Some of these conditions are displayed on the scan tool at the same time the DTC is displayed.


NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when checking for an active DTC.







Did this DTC set again?

Yes
  • Go To2


No

2.CHECKING FOR OTHER DTCS

NOTE: An open ASD power supply to the ECM will cause multiple DTC's including this DTC to set.


NOTE: Check the ECM for other DTC's. If other DTC's are set with this DTC refer to the symptom list and perform the CHECKING THE ECM POWER AND GROUND CIRCUITS test before continuing.



Are the ECM power and ground circuits are functioning properly?.

Yes
  • Go To3


No

3.ASD OUTPUT CKT OPEN








Does the test light illuminate brightly?

Yes
  • Go To4


No

4.BP SOLENOID CONTROL CIRCUIT SHORTED TO GROUND







Is the resistance above 1000 ohms?

Yes
  • Go To5


No

5.BP SOLENOID CONTROL CIRCUIT OPEN





Is the resistance below 10.0 ohms?

Yes
  • Go To6


No

6.BOOST PRESSURE SOLENOID



NOTE: Ensure the ECM and BP Solenoid harness connectors are connected.





Did this DTC set again?

Yes


No