DTC P2530:00

Ignition switch stuck off

DETECTION CONDITION

• If the IG ON time count of the instrument cluster proceeds 5 s under the following condition:

• Ignition switch signal off

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

• Start stop unit malfunction

• Ignition switch signal output stuck off

• Wiring harness malfunction

• Short or open signal in ignition switch

• Ignition switch signal terminal (start stop unit terminal 2S) malfunction

• Control valve body malfunction

• Ignition switch signal terminal (start stop unit terminal 2S) pin deformity

SYSTEM WIRING DIAGRAM

Not applicable

STEP

INSPECTION

ACTION

1

• Has the freeze frame data/snapshot data been recorded on the repair order?

Yes

Go to the next step.

No

Record the freeze frame data/snapshot data on the repair order, then go to the next step.

2

• 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

• Perform the start stop unit DTC inspection using the M-MDS.

  (See DTC INSPECTION [START STOP UNIT].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [START STOP UNIT].)

No

Go to the next step.

4

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Disconnect the following connectors.

• IG1 relay

• Start stop unit

• Inspect for continuity between the following terminals (wiring harness-side):

• IG1 relay terminal E—Start stop unit terminal 2S

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between IG1 relay terminal E and start stop unit terminal 2S.

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 an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 6.

5

• Always reconnect all disconnected connectors.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Does the engine start normally?

Yes

Replace the control valve body, then go to the next step.

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)

No

Replace the start stop unit, then go to the next step.

(See START STOP UNIT REMOVAL/INSTALLATION.)

6

• Clear the DTC using the M-MDS.

  (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].)

• Perform the following procedure to ensure that the DTC has been resolved:

• Switch the ignition ON (engine off or on) and wait for 10 s or more.

• Switch the ignition off.

• Perform the DTC inspection using the M-MDS.

  (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].)

No

DTC troubleshooting completed.