LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic [Engine Control System MZR 2.5] (5 Of 5) >> DTC P2503:00 >> Diagnostic Procedure

Diagnostic Procedure

STEP INSPECTION ACTION
1 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.
2 INSPECT DRIVE BELT CONDITION 
  • Verify that the drive belt auto tensioner indicator mark does not exceed limit.

    (See DRIVE BELT INSPECTION .)

  • Is there any malfunction?
Yes Replace the drive belt, then go to Step 8.
(See DRIVE BELT REMOVAL/INSTALLATION .)
No Go to the next step.
3 INSPECT GENERATOR CONNECTOR CONDITION 
  • Switch the ignition to off.
  • Disconnect the generator connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the connector and/or terminals, then go to Step 8.
No Go to the next step.
4 INSPECT GENERATOR CIRCUIT FOR SHORT TO GROUND 
  • Verify that the generator connector is disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side) and body ground:
    • Generator terminal D
    • Generator terminal P
  • Is there continuity?
Yes If the short to ground circuit could be detected:
  • Repair or replace the wiring harness for a possible short to ground.

If the short to ground circuit could not be detected:


Go to Step 8.
No Go to the next step.
5 INSPECT PCM CONNECTOR CONDITION 
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the connector and/or terminals, then go to Step 8.
No Go to the next step.
6 INSPECT GENERATOR CIRCUIT FOR OPEN CIRCUIT 
  • Verify that the generator and PCM connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side):
    • Generator terminal D-PCM terminal 2AA
    • Generator terminal P-PCM terminal 2AF
  • Is there continuity?
Yes Go to the next step.
No Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7 INSPECT GENERATOR  Yes Repair or replace the malfunctioning part according to the inspection results, then go to the next step.
(See GENERATOR DISASSEMBLY/ASSEMBLY [MZR 2.5] .)
(See GENERATOR REMOVAL/INSTALLATION [MZR 2.5] .)
No Go to the next step.
8 VERIFY DTC TROUBLESHOOTING COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS.

    (See AFTER REPAIR PROCEDURE .)

  • Perform the KOER self test.

    (See KOEO/KOER SELF TEST .)

  • Is the same DTC present?
Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
9 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No DTC troubleshooting completed.