2

Any of the following lights remain illuminated: (ABS warning light, TCS/DSC indicator light and/or DSC OFF indicator light)

POSSIBLE CAUSE

• DSC HU/CM detected malfunction (Input and output device malfunction).

• No connection at DSC HU/CM connector (When DSC HU/CM connector is removed, ABS warning light, brake system warning light, TCS/DSC indicator light, and DSC OFF indicator light are illuminated.)

• DSC HU/CM detects low voltage in power supply.

• DSC HU/CM ground malfunction (When DSC HU/CM ground is not securely connected, ABS warning light, brake system warning light, TCS/DSC indicator light, and DSC OFF indicator light are illuminated but DTCs are not displayed.)

• DSC HU/CM does not operate.

• PCM detected malfunction.

• Communication error between DSC HU/CM and instrument cluster

• Communication error between DSC HU/CM and PCM

• Communication error between DSC HU/CM and EPS control module

• After replacing DSC HU/CM and SAS control module, the DSC related parts sensor initialization has not been performed.

• Non-completion of module configuration (When module configuration is not performed after replacing DSC HU/CM, ABS warning light remains illuminated.)

STEP

INSPECTION

ACTION

1

• Retrieve the DSC HU/CM DTC using the M-MDS.

  (See DTC INSPECTION [DSC HU/CM].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC INSPECTION [DSC HU/CM].)

No

Go to the next step.

2

• Switch the ignition ON.

• Does the ABS warning light, brake warning light, TCS/DSC indicator light, and DSC OFF indicator light turn off after 2 to 4 s?

Yes

Inspect the DSC HU/CM connector or terminal. (poor connection intermittently)

• If there is a malfunction, repair or replace any malfunctioning parts according to the inspection result.

No

Go to the next step.

3

• Switch the ignition off.

• Inspect the battery voltage.

  (See BATTERY INSPECTION.)

• Is the battery voltage normal?

Yes

Go to the next step.

No

Recharge the battery and inspect the charging system.

(See BATTERY INSPECTION.)

(See GENERATOR INSPECTION [SKYACTIV-G 2.0].)

• If there is a malfunction, repair or replace any malfunctioning parts according to the inspection result.

4

• Measure the battery voltage with electrical loads (such as A/C, headlight) applied while idling.

• Is the battery voltage normal?

Yes

Go to the next step.

No

Inspect the charging system (drive belt, generator).

(See DRIVE BELT INSPECTION [SKYACTIV-G 2.0].)

• If there is a malfunction, repair or replace any malfunctioning parts according to the inspection result.

5

• Inspect connection of the DSC HU/CM connector.

• Is the DSC HU/CM connector connected securely?

Yes

Go to the next step.

No

Connect the DSC HU/CM connector securely, then go to the next step.

6

• Is there a poor connection in the DSC HU/CM, instrument cluster, or related-connector terminal?

Yes

Repair the poor connection location of the terminal.

No

Go to the next step.

*7

• Switch the ignition ON.

• Measure the voltage at the DSC HU/CM terminal Q (wiring harness-side).

• Is the voltage approx. 12 V?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between DSC HU/CM terminal Q (wiring harness-side) and ignition switch.

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.

*8

• Switch the ignition off.

• Disconnect the DSC HU/CM connector.

• Inspect for continuity between DSC HU/CM terminal AL (wiring harness-side) and body ground.

• Is there continuity?

Yes

Replace the DSC HU/CM. (open circuit in the DSC HU/CM)

(See DSC HU/CM REMOVAL/INSTALLATION.)

No

Repair or replace the wiring harness for a possible open circuit and poor contact at the ground point.

9

• Retrieve the PCM DTCs using the M-MDS.

  (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

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

No

Go to the next step.

10

• Verify if the malfunction is caused by initialization procedure for the DSC related parts sensor not being performed.

• Has the initial setting for the brake fluid pressure sensor been performed after replacing the DSC HU/CM and SAS control module?

Yes

Go to the next step.

No

Perform the initialization procedure.

(See DSC RELATED PARTS SENSOR INITIALIZATION PROCEDURE.)

11

• Retrieve the instrument cluster DTC using the M-MDS.

  (See DTC INSPECTION [INSTRUMENT CLUSTER].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [INSTRUMENT CLUSTER].)

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)