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DTC P0603:00 [TCM (SJ6A-EL)]

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2016 – MX-5 – Transmission/Transaxle

DTC P0603:00 [TCM (SJ6A-EL)]

DTC P0603:00

TCM: EEPRPM check sum error

DETECTION CONDITION

  • Vehicle condition: Under any condition

  • Status: TCM detects different numeric values for EEPROM and RAM

  • Period: Confirmed 1 time

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

  • TCM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION

1

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

NOTE:

  • Recording can be facilitated using the screen capture of the PC function.

  • Record the freeze frame data/snap shot data.

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

Replace the TCM, then go to the next step.

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

3

INSPECT FOR DTC

Yes

Follow the applicable DTC inspection procedure, then go to the next step.

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

No

Go to the next step.

4

VERIFY SAME DTC IS NOT PRESENT

Yes

Replace the TCM, then go to the next step.

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

No

Go to the next step.

5

VERIFY DTC TROUBLESHOOTING COMPLETED

Yes

Go to the applicable DTC inspection.

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

No

DTC troubleshooting completed.

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