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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 27 (On-Board Diagnostic - Engine Control System (VIN L & VIN M) (3 Of 4)) >> DTC P2503:00 [Pcm (SKYACTIV-G)] >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

WARNING: This page is about a different variant/trim than selected.
TROUBLESHOOTING DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
  • Verify related Service Bulletins, on-line repair information, or Service Information availability.
  • Is any related Information available?
Yes Perform repair or diagnosis according to the available information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
2 PURPOSE: VERIFY IF POOR CONNECTION OF EACH PART AFFECTS DIAGNOSTIC RESULTS
  • Switch the ignition off.
  • Inspect the connection condition (part installation condition, connector connection condition) for the following parts:
    • Battery
    • Generator
    • PCM
  • Is the connection condition (part installation condition, connector connection condition) for each part normal?
Yes Go to the next step.
No Connect each part or the connector correctly, then go to Step 11.
3 PURPOSE: INSPECT BATTERY CONNECTOR FOR MALFUNCTION
  • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .)
  • Are the connector and terminal normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to Step 11.
4 PURPOSE: INSPECT GENERATOR CONNECTOR FOR MALFUNCTION
  • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .)
  • Are the connector and terminal normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to Step 11.
5 PURPOSE: INSPECT PCM CONNECTOR FOR MALFUNCTION
  • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .)
  • Are the connector and terminal normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to Step 11.
6 PURPOSE: INSPECT GENERATOR CHARGE/DISCHARGE CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT
  • Inspect the power supply circuit for an open circuit and short to ground. (See CIRCUIT INSPECTION .)
  • Is the circuit normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to Step 11.
7 PURPOSE: INSPECT GENERATOR CONTROL CIRCUIT AND SIGNAL CIRCUIT FOR SHORT TO GROUND
  • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION .)
  • Is the circuit normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to Step 11.
8 PURPOSE: INSPECT GENERATOR CONTROL CIRCUIT AND SIGNAL CIRCUIT FOR OPEN CIRCUIT
  • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION .)
  • Is the circuit normal?
Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to Step 11.
9 PURPOSE: VERIFY IF MALFUNCTION RELATED TO GENERATOR DRIVE BELT AFFECTS DIAGNOSTIC RESULTS Yes Go to the next step.
No Replace the generator drive belt, then go to the next step.
(See DRIVE BELT REMOVAL/INSTALLATION (VIN M) .)
(See DRIVE BELT REMOVAL/INSTALLATION (VIN 7, L) .)
10 PURPOSE: INSPECT GENERATOR FOR MALFUNCTION Yes Go to the next step.
No Repair or replace the malfunctioning location, then go to the next step.
(See GENERATOR REMOVAL/INSTALLATION (VIN M) .)
(See GENERATOR REMOVAL/INSTALLATION (VIN 7, L) .)
11 PURPOSE: VERIFY CONDITIONS OF BATTERY - Follow the inspection instructions.
Go to repair completion verification.
Repair completion verification 1 PURPOSE: VERIFY THAT VEHICLE IS REPAIRED
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
  • Perform the DTC inspection for the PCM. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, perform the diagnosis from Step 1.
No Go to the next step.
Repair completion verification 2 PURPOSE: VERIFY IF OTHER DTCs DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.