FixVault

Diagnostic procedure

DTC P0446 [AJ] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
Yes Go to the next step.
No Record FREEZE FRAME DATA on repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or online repair information availability.
  • Is any related repair information available?
Yes Perform repair or diagnostic according to the available repair information.
  • If the vehicle is not repaired, then go to the next step.
No Go to the next step.
3 CHECK EVAP SYSTEM LEAK DETECTION PUMP CIRCUIT FOR SHORT TO POWER 
  • Turn ignition switch to ON (engine OFF).
  • Disconnect EVAP system leak detection pump connector.
  • Measure voltage between EVAP system leak detection pump connector terminal D and body ground.
  • Is voltage B+? 
Yes Repair or replace wiring harness, then go to Step 5.
No Go to the next step.
4 INSPECT COV (EVAP SYSTEM LEAK DETECTION PUMP)  Yes Go to the next step.
No Replace EVAP system leak detection pump, then go to the next step.
5 VERIFY TROUBLESHOOTING OF DTC P0446 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn the ignition switch to the ON position (Engine off).
  • Clear the DTC from the memory using the WDS or equivalent.
  • Start engine and perform DRIVE MODE 4. (See OBD-II DRIVE MODE .)
  • Is PENDING CODE of same DTC present?
Yes Replace PCM, then go to the next step.
No Go to the next step.
6 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection. (See DTC TABLE .)
No Troubleshooting completed.