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Diagnostic procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
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 SELECTOR LEVER COMPONENT CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition to off.
  • Disconnect the selector lever component 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 9.
No Go to the next step.
4 INSPECT M RANGE SWITCH, UP SWITCH OR DOWN SWITCH CIRCUIT FOR SHORT TO GND 
  • Switch the ignition to off.
  • Disconnect the TCM connector.
  • Inspect for continuity between the following circuits:
    • Selector lever component terminal A (wiring harness-side) and body GND
    • Selector lever component terminal B (wiring harness-side) and body GND
    • Selector lever component terminal C (wiring harness-side) and body GND
  • Is there continuity?
 Yes Repair or replace the wiring harness for a possible short to GND, then go to Step 9.
No Go to the next step.
5 INSPECT M RANGE SWITCH, UP SWITCH AND DOWN SWITCH CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Disconnect the TCM connector.
  • Switch the ignition to ON. (engine off).
  • Measure the voltage between the following circuits:
    • Selector lever component terminal A (wiring harness-side) and body GND
    • Selector lever component terminal B (wiring harness-side) and body GND
    • Selector lever component terminal C (wiring harness-side) and body GND
  • Is there continuity?
 Yes Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
No Go to the next step.
6 INSPECT M RANGE SWITCH, UP SWITCH AND DOWN SWITCH 
 Yes Replace the selector lever component, then go to Step 9.
(See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION .)
No Go to the next step.
7 INSPECT TCM CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition to off.
  • Disconnect the TCM 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 9.
No Go to the next step.
8 INSPECT M RANGE SWITCH, UP SWITCH AND DOWN SWITCH CIRCUIT FOR OPEN CIRCUIT 
  • Switch the ignition to off.
  • Inspect for continuity between the following circuits:
    • Selector lever component terminal A (wiring harness-side) and TCM terminal A3 (wiring harness-side)
    • Selector lever component terminal B (wiring harness-side) and TCM terminal A4 (wiring harness-side)
    • Selector lever component terminal C (wiring harness-side) and TCM terminal A7 (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.
9 VERIFY TROUBLESHOOTING OF DTC P0819:00 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:
    1. Start the engine.
    2. Warm up the engine to normal operating temperature.
    3. Drive the vehicle in M range, and shift the selector lever (operate up and down switches) between 1GR to 6GR for 10 s or more.
  • Is the same DTC present?
 Yes Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION [AW6A-EL] .)
No Go to the next step.
10 VERIFY NO DTC HAS BEEN PRESENTED 
 Yes Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [AW6A-EL] .)
No DTC troubleshooting completed.
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