A/T

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-38 TCM connector (vehicle side, connected)]

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

^ Ignition switch: ON
^ Between C-38 terminal No. 36 and body ground Sport mode selected: 1 V or less

Other than above: battery positive voltage

^ Between C-38 terminal No. 35 and body ground Shift switch (up) operated: 1 V or less

Other than above: battery positive voltage

^ Between C-38 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-38 TCM connector and the C-24 select switch.

^ Between C-38 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-38 TCM connector and the shift switch (up).

^ Between C-38 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-38 TCM connector and the shift switch (down).

^ Between C-38 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.

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.