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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 333 (On-Board Diagnostic (Engine Control System (L3)) >> DTC P2507 >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC P2507 [L3] 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 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 EEC FUSE 
  • Turn the ignition switch off.
  • Inspect EEC fuse for failure and proper.
  • Is it normal?
 Yes Go to step 6.
No
  • If EEC fuse has been melt down, then go to the next step.
  • If EEC fuse is not installed correctly, install it correctly then go to Step 7.
4 INSPECT MONITOR CIRCUIT FOR SHORT TO GROUND 
  • Disconnect battery cables.
  • Inspect continuity between EEC fuse terminal and body ground.
  • Is there continuity?
 Yes Repair or replace harness for short to ground and install new fuse, then go to Step 7.
No Go to step 7.
5 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair terminals, then go to Step 7.
No Go to the next step.
6 INSPECT MONITOR CIRCUIT FOR OPEN CIRCUIT 
  • Disconnect battery cables.
  • Inspect continuity between EEC fuse terminal and PCM terminal 86(1), 2Z(2) (harness-side).
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace harness for open circuit, then go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P2507 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Turn ignition switch to ON (Engine off).
  • 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.
(See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
8 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Troubleshooting completed.
(1) California emission regulation applicable ATX model
(2) Except for California emission regulation applicable ATX model
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