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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (On-Board Diagnostic [Automatic Transaxle AY6A-El]) >> DTC P0974:00 >> Diagnostic Procedure

Diagnostic Procedure

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STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has the FREEZE FRAME DATA been recorded on the repair order?
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 COUPLER COMPONENT CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition OFF (LOCK).
  • Remove the TCM.

    (See TCM REMOVAL/INSTALLATION .)

  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
4 INSPECT SHIFT SOLENOID A CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Switch the ignition OFF (LOCK).
  • Inspect for continuity between coupler component terminal B5 (wiring harness-side) and all terminals except B5 (wiring harness-side).
  • Is there continuity?
Yes Repair or replace the wiring harness for a possible short to power supply, then go to Step 8.
No Go to the next step.
5 INSPECT SHIFT SOLENOID A CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition OFF (LOCK).
  • Disconnect the shift solenoid A connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the terminal, then go to Step 8.
No Go to the next step.
6 INSPECT SHIFT SOLENOID A 
Yes Replace the shift solenoid A, then go to Step 8.
(See SHIFT SOLENOID A REMOVAL/INSTALLATION .)
No Go to the next step.
7 INSPECT SHIFT SOLENOID A CIRCUIT FOR OPEN CIRCUIT 
  • Switch the ignition OFF (LOCK).
  • Inspect for continuity between shift solenoid A terminal B (wiring harness-side) and coupler component terminal B5 (wiring harness-side).
  • Is there continuity?
Yes Go to the next step.
No Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8 VERIFY DTC TROUBLESHOOTING COMPLETED 
  • Make sure to reconnect all the disconnected connectors.
  • Clear the DTC using the M-MDS.
  • Perform the following procedure to ensure that the DTC has been resolved:
    • Start the engine.
    • Warm up the engine and transaxle.
    • Drive the vehicle in D position and make sure that the gears shift smoothly from 1GR to 6GR.
  • 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.
9 VERIFY NO DTCs ARE PRESENT 
Yes Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE .)
No DTC troubleshooting completed.