DTC P0819:00

M position switch up or down switch signal: Signal error

DETECTION CONDITION

M position switch signal error

• Vehicle condition: TCM communication normal during engine rotation

• Status: Detects that M position switch is on in P, R or N position

• Period: Confirmed continuously for 2 s

Up switch malfunction or down switch signal error

• Vehicle condition: TCM communication normal during engine rotation

• Status: Detects that up or down switch is on while M position switch is off

• Period: Confirmed continuously for 10 s

FAIL-SAFE FUNCTION

M position switch signal error

• Inhibits the manual shift control.

• Inhibits manual shifting using the up or down switch of the selector lever.

• Inhibits direct mode.

Up switch malfunction or down switch signal error

• Inhibits manual shifting using the up or down switch of the selector lever.

POSSIBLE CAUSE

M position switch signal error

• Instrument cluster DTC is stored.

• M position switch malfunction

• Short to power supply in wiring harness between selector lever component terminal E and instrument cluster terminal H

• Short to ground in wiring harness between selector lever component terminal E and instrument cluster terminal H

• Open circuit in wiring harness between selector lever component terminal E and instrument cluster terminal H

• Open circuit in wiring harness between selector lever component terminal H and body ground

• TCM connector or terminal malfunction

• Selector lever component connector or terminal malfunction

• TCM malfunction

Up switch malfunction or down switch signal error

• Instrument cluster DTC is stored.

• Up switch malfunction

• Down switch malfunction.

• Short to power supply in wiring harness between selector lever component terminal C and instrument cluster terminal F

• Short to power supply in wiring harness between selector lever component terminal D and instrument cluster terminal G

• Short to ground in wiring harness between selector lever component terminal C and instrument cluster terminal F

• Short to ground in wiring harness between selector lever component terminal D and instrument cluster terminal G

• Open circuit in wiring harness between selector lever component terminal C and instrument cluster terminal F

• Open circuit in wiring harness between selector lever component terminal D and instrument cluster terminal G

• Open circuit in wiring harness between selector lever component terminal H and body ground

• TCM connector or terminal malfunction

• Selector lever component connector or terminal malfunction

• Instrument cluster malfunction

STEP

INSPECTION

ACTION

1

• 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.

2

• Perform the instrument cluster DTC inspection using the M-MDS.

  (See DTC INSPECTION [INSTRUMENT CLUSTER].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

Go to the next step.

3

• Switch the ignition 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 connector and/or terminals, then go to Step 11.

No

Go to the next step.

4

• Inspect the M position switch, up switch and down switch.

  (See M POSITION SWITCH INSPECTION [SJ6A-EL].)

  (See UP SWITCH INSPECTION [SJ6A-EL].)

  (See DOWN SWITCH INSPECTION [SJ6A-EL].)

• Is there any malfunction?

Yes

Replace the selector lever component, then go to Step 11.

(See AUTOMATIC TRANSMISSION SHIFT MECHANISM REMOVAL/INSTALLATION.)

No

Go to the next step.

5

• Verify that the selector lever component connector is disconnected.

• Inspect for continuity between selector lever component terminal H (wiring harness-side) and body ground.

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between selector lever component terminal H and body ground.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 11.

6

• Disconnect the instrument cluster connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 11.

No

Go to the next step.

7

• Verify that the selector lever component and instrument cluster connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side) and body ground:

• Selector lever component terminal E

• Selector lever component terminal C

• Selector lever component terminal D

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Selector lever component terminal E???Instrument cluster terminal H

• Selector lever component terminal C???Instrument cluster terminal F

• Selector lever component terminal D???Instrument cluster terminal G

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 11.

No

Go to the next step.

8

• Verify that the selector lever component and instrument cluster connectors are disconnected.

• Switch the ignition ON (engine on).

• Measure the voltage at the following terminals (wiring harness-side):

• Selector lever component terminal E

• Selector lever component terminal C

• Selector lever component terminal D

• Is the voltage 0 V?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Selector lever component terminal E???Instrument cluster terminal H

• Selector lever component terminal C???Instrument cluster terminal F

• Selector lever component terminal D???Instrument cluster terminal G

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to power supply.

Go to Step 11.

9

• Verify that the selector lever component and instrument cluster connectors are disconnected.

• Switch the ignition off.

• Inspect for continuity between the following terminals (wiring harness-side):

• Selector lever component terminal E???Instrument cluster terminal H

• Selector lever component terminal C???Instrument cluster terminal F

• Selector lever component terminal D???Instrument cluster terminal G

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Selector lever component terminal E???Instrument cluster terminal H

• Selector lever component terminal C???Instrument cluster terminal F

• Selector lever component terminal D???Instrument cluster terminal G

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 11.

10

• Inspect the instrument cluster.

  (See INSTRUMENT CLUSTER INSPECTION.)

• Is there any malfunction?

Yes

Replace the instrument cluster, then go to the next step.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

No

Go to the next step.

11

• Always reconnect all disconnected connectors.

• Clear the DTC using the M-MDS.

  (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].)

• Perform the following procedure to ensure that the DTC has been resolved:

• Start the engine.

• Warm-up the engine to normal operating temperature.

• Drive the vehicle in M position, and shift the selector lever (operate up and down switches) between 1GR to 6GR for 10 s or more.

• Perform the DTC inspection using the M-MDS.

  (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [TCM (SJ6A-EL)].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (SJ6A-EL)].)

No

DTC troubleshooting completed.