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DTC P0830:23 [START STOP UNIT]

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2016 – MX-5 – Body and Accessories

DTC P0830:23 [START STOP UNIT]

Description

Clutch pedal position switch circuit malfunction

Detection condition

  • Start stop unit detects that the clutch pedal position switch is stuck on for 10 min or more.

Fail-safe

  • Change to the back-up mode.

  • Perform the control with clutch pedal position switch turned off.

Possible cause

  • DTCs are stored in the PCM.

  • Clutch pedal position switch connector or terminal malfunction

  • Clutch pedal position switch malfunction

  • Start stop unit connector or terminal malfunction

  • PCM connector or terminal malfunction

  • Short to ground in the wiring harness between the following terminals:

    • Clutch pedal position switch terminal A—PCM terminal 2J

    • Clutch pedal position switch terminal A—Start stop unit terminal 2E

  • Start stop unit malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY PCM DTCs

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

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

No

Go to the next step.

2

INSPECT CLUTCH PEDAL POSITION SWITCH CONNECTOR CONDITION

  • Switch the ignition off.

  • Disconnect the negative battery cable.

    (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

  • Disconnect the clutch pedal position switch connector.

  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

  • Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

3

INSPECT CLUTCH PEDAL POSITION SWITCH

Yes

Go to the next step.

No

Replace the clutch pedal position switch, then go to the Step 7.

(See CLUTCH PEDAL POSITION SWITCH REMOVAL/INSTALLATION.)

4

INSPECT START STOP UNIT CONNECTOR CONDITION

  • Disconnect the start stop unit connector.

  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

  • Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

5

INSPECT PCM CONNECTOR CONDITION

  • Disconnect the PCM connector.

  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

  • Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

6

INSPECT CLUTCH PEDAL POSITION SWITCH CIRCUIT FOR SHORT TO GROUND

  • Verify that the clutch pedal position switch, start stop unit and PCM connectors are disconnected.

  • Inspect for continuity between clutch pedal position switch terminal A (wiring harness-side) and body ground.

  • Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

  • Clutch pedal position switch terminal A—PCM terminal 2J

  • Clutch pedal position switch terminal A—Start stop unit terminal 2E

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

  • Repair or replace the malfunctioning part.

    If there is no common connector:

  • Repair or replace the wiring harness which has a short to ground.

Go to the next step.

No

Go to the next step.

7

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

Yes

Repeat the inspection from Step 1.

Go to the next step.

No

Go to the next step.

8

VERIFY IF OTHER DTCs DISPLAYED

  • Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [START STOP UNIT].)

No

DTC troubleshooting completed.

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