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2008 - MX-5 - Transmission/Transaxle

DTC P0826 [SJ6A-EL]



DTC P0826

Steering shift switch circuit malfunction (open circuit/short to ground)

DETECTION CONDITION

  • TCM detects short circuit or short to ground in steering shift switch circuit when engine is running.

    Diagnostic support note:
  • MIL illuminates if TCM detects the above malfunction condition during the first drive cycle.

  • PENDING CODE is not available.

  • FREEZE FRAME DATA is available.

  • AT warning light illuminate.

  • DTC is stored in the TCM memory.

POSSIBLE CAUSE

  • Steering shift switch malfunction

  • Open circuit in wiring harness between steering shift switch terminal 2F and TCM terminal 2AF

  • Short to ground in wiring harness between steering shift switch terminal 2F and TCM terminal 2AF

  • Open circuit in wiring harness between steering shift switch terminal 2C and TCM terminal 2AB

  • Damaged connector between steering shift switch and TCM

  • Clock spring malfunction

  • TCM malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
  • Has FREEZE FRAME DATA been recorded?

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 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.

3

INSPECT CLOCK SPRING CONNECTOR FOR POOR CONNECTION
  • Turn the ignition switch to the LOCK position.

  • Disconnect the clock spring connector.

  • Inspect for poor connection at clock spring terminals 2C, 2F, 5C and 5F (such as damaged/pulled-out pins, corrosion).

  • Are the connector and terminals normal?

Yes

Go to the next step.

No

Repair or replace the connector and/or terminal, then go to Step 10.

4

INSPECT CLOCK SPRING GROUND CIRCUIT FOR OPEN CIRCUIT
  • Inspect for continuity between the clock spring (wiring harness-side) terminal 5C and TCM (wiring harness-side) terminal 2AB.

  • Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness, then go to Step 10.

5

INSPECT STEERING SHIFT SWITCH

Yes

Go to the next step.

No

Replace the steering shift switch, then go to Step 10.

(See AUDIO CONTROL SWITCH REMOVAL/INSTALLATION.)

6

INSPECT CLOCK SPRING

Yes

Go to the next step.

No

Replace the clock spring, then go to Step 10.

(See CLOCK SPRING REMOVAL/INSTALLATION.)

7

INSPECT TCM CONNECTOR FOR POOR CONNECTION
  • Disconnect the TCM connector.

  • Inspect for poor connection at TCM terminals 2AB and 2AF (such as damaged/pulled-out pins, corrosion).

  • Are the connector and terminals normal?

Yes

Go to the next step.

No

Repair or replace the connector and/or terminal, then go to Step 10.

8

INSPECT SHIFT CONTROL SIGNAL CIRCUIT FOR OPEN CIRCUIT
  • Inspect for continuity between the clock spring (wiring harness-side) terminal 5F and TCM (wiring harness-side) terminal 2AF.

  • Is there continuity?

Yes

Go to the next step.

No

Repair or replace the wiring harness, then go to Step 10.

9

INSPECT SHIFT CONTROL SIGNAL CIRCUIT FOR SHORT TO GROUND
  • Inspect for continuity between the clock spring (wiring harness-side) terminal 5F and body ground.

  • Is there continuity?

Yes

Repair or replace the wiring harness, then go to Step 10.

No

Go to the next step.

10

VERIFY TROUBLESHOOTING OF DTC P0826 COMPLETED

  • Make sure to reconnect all disconnected connectors.

  • Clear the DTC from the TCM memory using the M-MDS.

  • Drive the vehicle in M range, and change gears by operating the steering shift switch.

  • Is same DTC present?

Yes

Replace the TCM, then go to the next step.

(See TCM REMOVAL/INSTALLATION [SJ6A-EL].)

No

Go to the next step.

11

VERIFY AFTER REPAIR PROCEDURE

  • Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SJ6A-EL].)

No

DTC troubleshooting completed.




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