DTC P0819:00 [AW6A-EL, AW6AX-EL]SM2445321
DTC P0819:00 [AW6A-EL, AW6AX-EL]

id0502j7822400

DTC P0819:00

Manual switch/up switch/down switch circuit malfunction (open circuit/short circuit)
DETECTION CONDITION
• Any of the following conditions are detected for 10 s or more when engine is running:
― 5 V detected at TCM terminals A7 when in any position except D or M range
― 0 V detected at TCM terminal A7 when 5 V are input to TCM terminal A3 or A4
Diagnostic support note:
• The MIL does not illuminate.
• The AT warning light illuminates 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 DTC is stored in the TCM memory.
POSSIBLE CAUSE
• 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

Diagnostic procedure

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 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
• Inspect the selector lever component. (See SELECTOR LEVER COMPONENT INSPECTION.)
• Is there any malfunction?
Yes
Replace the selector lever component, then go to Step 9.
(See SELECTOR LEVER COMPONENT 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, AW6AX-EL].)
No
Go to the next step.
10
VERIFY NO DTC HAS BEEN PRESENTED
• Perform the “Reading DTCs Procedure”. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AW6A-EL, AW6AX-EL].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [AW6A-EL, AW6AX-EL].)
No
DTC troubleshooting completed.