P0826

DTC P0826: Shift Switch Assembly System

















DESCRIPTIONS OF MONITOR METHODS

- With the ignition switch ON, an abnormal signal combination is detected for 2 seconds.

TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CODE TO BE SET ARE:)

- Malfunction of the shift switch assembly system circuit

- Damaged harness or connector

- Malfunction of the TCM

- Malfunction of the select switch

- Malfunction of the Shift switch (up)

- Malfunction of the Shift switch (down)

DIAGNOSIS

STEP 1. Check the TCM terminal voltage.

[C-37 TCM connector (vehicle side, connected)]

Measure the voltage between the TCM connector terminals and body ground.

- Ignition switch: ON

- Between C-37 terminal No. 36 and body ground
Sport mode selected: 1 V or less
Other than above: battery positive voltage

- Between C-37 terminal No. 35 and body ground
Shift switch (up) operated: 1V or less
Other than above: battery positive voltage

- Between C-37 terminal No. 46 and body ground
Shift switch (down) operated: 1 V or less
Other than above: battery positive voltage

Q. Is the check result normal?

YES Go to Step 2.
NO Go to Step 3.
STEP 2. Check the TCM connector, vehicle-side wiring harness connector pin terminal, and the connection status.

Q. Is the check result normal?

YES Go to Step 9.
NO Repair or replace the failure section.
STEP 3. Check between the TCM connector and the select switch.

Check for continuity between the C-37 TCM connector and the C-24 select switch.

NOTE:
Prior to the wiring harness inspection, check the intermediate connectors C-33 and repair that if necessary.

- Between C-37 terminal No. 36 and C-24 terminal No. 8: Continuity exists.

When the continuity check result is OK, check that the wiring harness is not shorted to the body and other wiring harness.

Q. Is the check result normal?

YES Go to Step 4.
NO Repair or replace the failure section.
STEP 4. Check between the shift switch assembly and body ground.

Check for continuity between the C-24 shift switch assembly (ground) and body ground.

- Between C-24 terminal No. 7 and body ground: Continuity exists.

Q. Is the check result normal?

YES Go to Step 5.
NO Repair or replace the failure section.
STEP 5. Check between the TCM connector and the shift switch (up).

Check for continuity between the C-37 TCM connector and the shift switch (up).

- Between C-37 terminal No. 35 and C-24 terminal No. 10: Continuity exists.

When the continuity check result is OK, check that the wiring harness is not shorted to the body and other wiring harness.

Q. Is the check result normal?

YES Go to Step 6.
NO Repair or replace the failure section.
STEP 6. Check between the TCM connector and the shift switch (down).

Check for continuity between the C-37 TCM connector and the shift switch (down).

- Between C-37 terminal No. 46 and C-24 terminal No. 9: Continuity exists.

When the continuity check result is OK, check that the wiring harness is not shorted to the body and other wiring harness.

Q. Is the check result normal?

YES Go to Step 7.
NO Repair or replace the failure section.
STEP 7. Check the shift switch assembly as a single unit.

Refer to Shift Switch Assembly Continuity Check.

Q. Is the check result normal?

YES Go to Step 8.
NO Repair or replace the failure section.
STEP 8. Check the TCM, vehicle-side wiring harness connector pin terminal, and the connection status.

Q. Is the check result normal?

YES Replace the TCM.
NO Repair or replace the failure section.
STEP 9. Erase the DTC code, and drive the vehicle for a while.

Check that the normal code is displayed.

Q. Is the check result normal?

YES The procedure is complete.
NO Return to START.