DTC P0819 [AW6A-EL, AW6AX-EL]
id050211802700
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DTC P0819 |
Manual switch/up switch/down switch circuit malfunction (open circuit/short circuit) |
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DETECTION CONDITION
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• Any of the following conditions are detected for 10 s or more when engine is running:
Diagnostic support note:
• The MIL does not illuminate if the TCM detects the above malfunction condition during the first drive cycle.
• A PENDING CODE is not available.
• FREEZE FRAME DATA is available.
• The AT warning light illuminates.
• The DTC is stored in the TCM memory.
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POSSIBLE CAUSE
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• Selector lever component connector or terminal malfunction
• Short to GND in wiring harness between selector lever component terminal A and TCM terminal A3
• Short to GND in wiring harness between selector lever component terminal B and TCM terminal A4
• Short to GND in wiring harness between selector lever component terminal C and TCM terminal A7
• Short to power supply in wiring harness between selector lever component terminal A and TCM terminal A3
• Short to power supply in wiring harness between selector lever component terminal B and TCM terminal A4
• Short to power supply in wiring harness between selector lever component terminal C and TCM terminal A7
• M range switch malfunction
• Up switch malfunction
• Down switch malfunction.
• TCM connector or terminal malfunction
• Open circuit between between selector lever component terminal A and TCM terminal A3
• Open circuit between between selector lever component terminal B and TCM terminal A4
• Open circuit between between selector lever component terminal C and TCM terminal A7
• TCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA been recorded on the repair order?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA on the repair order, then go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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INSPECT SELECTOR LEVER COMPONENT CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch to the LOCK position.
• Disconnect the selector lever component connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 9.
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No
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Go to the next step.
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4
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INSPECT M RANGE SWITCH, UP SWITCH OR DOWN SWITCH CIRCUIT FOR SHORT TO GND
• Turn the ignition switch to the LOCK position.
• Disconnect the TCM connector.
• Inspect for continuity between the following circuits:
• Is there continuity?
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Yes
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Repair or replace the wiring harness for a possible short to GND, then go to Step 9.
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No
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Go to the next step.
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5
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INSPECT M RANGE SWITCH, UP SWITCH AND DOWN SWITCH CIRCUIT FOR SHORT TO POWER SUPPLY
• Disconnect the TCM connector.
• Turn the ignition switch to the ON position (engine off).
• Measure the voltage between the following circuits:
• Is there continuity?
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Yes
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Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
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No
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Go to the next step.
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6
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INSPECT M RANGE SWITCH, UP SWITCH AND DOWN SWITCH
• Inspect the selector lever component.
• Is there any malfunction?
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Yes
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Replace the selector lever component, then go to Step 9.
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No
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Go to the next step.
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7
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INSPECT TCM CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch to the LOCK position.
• Disconnect the TCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 9.
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No
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Go to the next step.
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8
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INSPECT M RANGE SWITCH, UP SWITCH AND DOWN SWITCH CIRCUIT FOR OPEN CIRCUIT
• Turn the ignition switch to the LOCK position.
• Inspect for continuity between the following circuits:
• Is there continuity?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness for a possible open circuit, then go to the next step.
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9
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VERIFY TROUBLESHOOTING OF DTC P0819 COMPLETED
• Make sure to reconnect all the disconnected connectors.
• Clear the DTC from the memory using the M-MDS.
• Drive the vehicle in M range, and change gears by shifting the selector lever (operating the up and down switches).
• Is same DTC present?
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Yes
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Replace the TCM, then go to the next step.
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No
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Go to the next step.
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10
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “After Repair Procedure”.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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