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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 P1624 [BP, BP WITH TC] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or online repair information availability.
  • Is any repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 FOLLOW OTHER DETECTED DTC FIRST 
  • Turn ignition key to OFF and then to START.
  • Has P1602 been detected?
 Yes Go to DTC P1602 inspection. (See DTC P1602 )
No Go to the next step.
3 INSPECT IMMOBILIZER UNIT CONNECTOR FOR POOR CONNECTION 
  • Has P1621 been detected?
 Yes Go to DTC P1621 inspection.
(See DTC P1621 )
No Go to the next step.
4 VERIFY TROUBLESHOOTING OF DTC P1624 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Turn ignition key to OFF, then start engine.
  • 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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