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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0882 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 the FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related 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.
3 INSPECT ROOM 15 A FUSE 
  • Turn the ignition switch to the LOCK position.
  • Inspect ROOM 15 A fuse for malfunction.
  • Is it normal?
 Yes Go to step 5.
No
  • If ROOM 15 A fuse has been melted, go to the next step.
  • If ROOM 15 A fuse is not installed correctly, install it correctly, then go to Step 7.
4 INSPECT MONITOR CIRCUIT FOR SHORT TO GROUND 
  • Disconnect the positive battery cable.
  • Inspect for continuity between the ROOM 15 A fuse terminal and body ground.
  • Is there continuity?
 Yes Repair or replace the wiring harness and install new fuse, then go to Step 7.
No Go to Step 7.
5 INSPECT TCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect the battery cables.
  • Disconnect the TCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are the connector and terminals normal?
 Yes Go to the next step.
No Repair or replace the connector and/or terminal, then go to Step 7.
6 INSPECT B+ CIRCUIT FOR OPEN CIRCUIT 
  • Inspect for continuity between the ROOM 15 A fuse terminal and TCM (wiring harness-side) terminal 1A.
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace the wiring harness, then go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P0882 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn the ignition switch to the ON position (engine off).
  • Clear DTC from TCM memory using the WDS or equivalent.
  • Start the engine and warm it up completely.
  • Is the same DTC present?
 Yes Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION .)
No Go to the next step.
8 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No DTC troubleshooting completed.
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