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Home >> Pontiac >> 2007 >> Vibe Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - DTC P0134 To DTC P0451 >> DTC P043F >> Test Description
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Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  In order to correctly identify the malfunction, DTC P2401, P2402, and P2419 must be diagnosed before DTC P043E or P043F.
  2. 5:  This step uses the EVAP Service Bay test to verify the correct operation of the EVAP vent solenoid, the EVAP purge solenoid, and the EVAP vacuum leak pump. Using the Service Bay test also tests for leaks by sealing the system and monitoring the FTP sensor.
DTC P043F

Step Action Yes No
Schematic Reference:  Engine Controls Schematics 
Connector End View Reference:  Powertrain Control Module Connector End Views  or  Engine Controls Connector End Views 
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2  Inspect for additional evaporative emission (EVAP) system DTCs.
  • If there are EVAP system DTCs other than P043E or P043F diagnose those DTCs first.
  • Review the Freeze Frame/Failure Record and diagnose the DTC captured in the Freeze Frame/Failure Record first.

Are any other EVAP system DTCs set?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle Go to Step 3 
3
  1. Test for an intermittent and for a poor electrical connection at the EVAP vacuum leak pump. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
  2. Repair as necessary. Refer to Testing for Intermittent Conditions and Poor Connections .
Did you find and correct the condition?		 Go to Step 5  Go to Step 4 
4 Replace the EVAP vacuum leak pump assembly. Refer to Evaporative Emission System Vacuum Leak Pump Replacement .
Did you complete the replacement?		 Go to Step 5  -
5 
  1. Use the scan tool in order to clear the DTCs.
  2. Turn OFF the ignition for 30 seconds.
  3. Turn ON the ignition, with the engine OFF.
  4. Perform the EVAP service bay test with the scan tool. Refer to EVAP Service Bay Test in Service Bay Test .
Did you complete the EVAP Service Bay Test?		 Go to Step 6  -
6
  1. Check for any EVAP DTCs in Last Test Failed.
  2. Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 Go to Diagnostic Trouble Code (DTC) List - Vehicle System OK
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