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DTC U0442:00 [TCM (SJ6A-EL)]

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2016 – MX-5 – Transmission/Transaxle

DTC U0442:00 [TCM (SJ6A-EL)]

DTC U0442:00

CAN communication: Error signal received from PCM

DETECTION CONDITION

  • Throttle opening signal error

    • Vehicle condition: TCM communication normal

    • Status: Detects throttle opening angle signal error

    • Period: Confirmed 1 time in 0.5 s or more

  • Accelerator opening angle signal error

    • Vehicle condition: TCM communication normal

    • Status: Detects accelerator opening angle signal error

    • Period: Confirmed 1 time in 0.5 s or more

  • Engine torque signal error

    • Vehicle condition: TCM communication normal

    • Status: Detects engine torque signal error

    • Period: Confirmed 1 time in 0.5 s or more

  • Engine speed signal error

    • Vehicle condition: TCM communication normal

    • Status: Detects engine speed signal error

    • Period: Confirmed 1 time in 0.5 s or more

  • Engine coolant temperature signal error

    • Vehicle condition: TCM communication normal

    • Status: Detects engine coolant signal error

    • Period: Confirmed 1 time in 0.5 s or more

  • Detects engine misfire

    • Vehicle condition: TCM communication normal

    • Status: Detects engine misfire determination signal

    • Period: Confirmed 1 time

FAIL-SAFE FUNCTION

  • Throttle opening signal error

    • Inhibits learning control.

    • Inhibits direct mode.

    • Inhibits AAS mode.

    • Inhibits the TCC control and slip control.

    • Inhibits 5GR and 6GR.

    • Inhibits the neutral control.

    • Inhibits the slope control.

  • Accelerator opening angle signal error

    • Inhibits learning control.

    • Inhibits direct mode.

    • Inhibits AAS mode.

    • Inhibits the TCC control and slip control.

    • Inhibits 5GR and 6GR.

    • Inhibits the neutral control.

    • Inhibits the slope control.

  • Engine torque signal error

    • Inhibits learning control.

    • Inhibits AAS mode.

    • Inhibits slip control.

    • Inhibits 5GR and 6GR.

    • Inhibits the slope control.

  • Engine speed signal error

    • Inhibits learning control.

    • Inhibits direct mode.

    • Inhibits AAS mode.

    • Inhibits the TCC control and slip control.

    • Inhibits 5GR and 6GR.

    • Inhibits the neutral control.

    • Inhibits the slope control.

  • Engine coolant temperature signal error

    • Performs control with the ATF temperature of 80 °C {176 °F}.

    • Inhibits AAS mode.

    • Inhibits slip control.

    • Inhibits the neutral control.

    • Inhibits the slope control.

  • Detects engine misfire

    • Inhibits learning control.

    • Inhibits direct mode.

    • Inhibits AAS mode.

    • Inhibits the TCC control and slip control.

    • Inhibits 5GR and 6GR.

    • Inhibits the slope control.

POSSIBLE CAUSE

  • PCM DTC is stored.

SYSTEM WIRING DIAGRAM

Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION

1

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.

2

VERIFY PCM DTC

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

Go to the next step.

3

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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