MRCC INDICATOR LIGHT (GREEN) IS NOT ILLUMINATED DURING MRCC OPERATION [RADAR UNIT]

id1503a1010500

Description

• The MRCC indicator light (green) is not illuminated even if the MRCC is operated.

Possible malfunction

Note

• The detection performance of the radar unit has limitations and the mazda radar cruise control (MRCC) system may not operate normally. For the detection performance limitations, refer to the [RADAR UNIT] in the technical guide.

• The instrument cluster cannot illuminate the MRCC indicator light (green).

― Instrument cluster malfunction (malfunction in MRCC indicator light (green) illumination circuit)

― Connector connection malfunction

• The radar unit cannot illuminate the MRCC indicator light (green).

― Connector connection malfunction

― False signal input from cruise control switch

― radar unit malfunction

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT INSTRUMENT CLUSTER

•  Turn off the MRCC warning light (amber) using the M-MDS instrument cluster active command modes WL+IL.
(See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].)

•  Are all the warning lights turned on/off?

Yes

Go to the next step.

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

2

VERIFY INSTRUMENT CLUSTER CONNECTOR CONDITION

•  Disconnect the negative battery cable.
(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

•  Disconnect the instrument cluster 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.

3

VERIFY RADAR UNIT CONNECTOR CONDITION

•  Disconnect the radar 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.

4

INSPECT CRUISE CONTROL SWITCH

•  Inspect the cruise control switch.

•  Is the cruise control switch normal?

Yes

Go to the next step.

No

Replace the cruise control switch.

(See CRUISE CONTROL SWITCH REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)].)

5

INSPECT RADAR UNIT

•  Inspect the radar unit.
(See RADAR UNIT INSPECTION.)

•  Is the radar unit normal?

Yes

Symptom troubleshooting is completed.

No

Replace the radar unit.

(See RADAR UNIT REMOVAL/INSTALLATION.)

Step	Inspection		Action
1	INSPECT INSTRUMENT CLUSTER • Turn off the MRCC warning light (amber) using the M-MDS instrument cluster active command modes WL+IL. (See ACTIVE COMMAND MODES INSPECTION [INSTRUMENT CLUSTER].) • Are all the warning lights turned on/off?	Yes	Go to the next step.
1		No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
2	VERIFY INSTRUMENT CLUSTER CONNECTOR CONDITION • Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the instrument cluster 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.
2		No	Repair or replace the connector.
3	VERIFY RADAR UNIT CONNECTOR CONDITION • Disconnect the radar 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.
3		No	Repair or replace the connector.
4	INSPECT CRUISE CONTROL SWITCH • Inspect the cruise control switch. • Is the cruise control switch normal?	Yes	Go to the next step.
4		No	Replace the cruise control switch. (See CRUISE CONTROL SWITCH REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)].)
5	INSPECT RADAR UNIT • Inspect the radar unit. (See RADAR UNIT INSPECTION.) • Is the radar unit normal?	Yes	Symptom troubleshooting is completed.
5		No	Replace the radar unit. (See RADAR UNIT REMOVAL/INSTALLATION.)