LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3 With TC] >> DTC P2502 >> Diagnostic procedure
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Diagnostic procedure

DTC P2502 DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has the 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 the 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 BATTERY 
  • Turn the ignition switch off.
  • Inspect the battery.
  • Is the battery normal?
 Yes Go to the next step.
No Replace the battery, then go to Step 7.
4 INSPECT POOR INSTALLATION OF GENERATOR TERMINAL 
  • Turn the ignition switch to off.
  • Inspect for looseness of generator terminal B installation nut.
  • Is the nut loose?
 Yes Tighten the generator terminal B installation nut, then go to Step 7.
No Go to the next step.
5 INSPECT POOR INSTALLATION OF BATTERY POSITIVE TERMINAL 
  • Inspect for looseness of battery positive terminal.
  • Is the terminal loose?
 Yes Connect the battery positive terminal correctly, then go to Step 7.
No Go to the next step.
6 INSPECT BATTERY CHARGING CIRCUIT 
  • Disconnect the generator terminal B.
  • Measure the voltage between generator terminal B (wiring harness-side) and body ground.
  • Is the voltage B+  ?
 Yes Go to the next step.
No Repair or replace the wiring harness between generator terminal B and battery positive terminal, then go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P2502 COMPLETED 
  • Make sure to reconnect all connectors.
  • Clear the DTC from the PCM memory using the WDS or equivalent.
  • Start the engine.
  • Is the same DTC present?
 Yes Replace the 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.
scientia non olet · About LEMON Manuals