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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2402 [BP, BP WITH TC] 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 key to ON.
  • 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 the next step.
No Go to the next step.
4 VERIFY TROUBLESHOOTING OF DTC P2402 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start engine and warm it up completely.
  • Is same DTC present?
 Yes Replace PCM, then go to the next step.
No Go to the next step.
5 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Troubleshooting completed.
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