MRCC WARNING LIGHT (AMBER) REMAINS ILLUMINATED [VEHICLE CONTROL MODULE (V/C-MODULE)]

id0103g5010100

Description

• The MRCC warning light (amber) remains illuminated after switching the ignition ON (engine off or on).

Possible malfunction

• Instrument cluster cannot turn off the MRCC warning light (amber).

― Instrument cluster malfunction (malfunction in MRCC warning light (amber) illumination circuit)

• The vehicle control module cannot turn off the MRCC warning light (amber).

― Vehicle control module detects system malfunction

― Vehicle control module malfunction (false sending of MRCC warning light (amber) illumination request)

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

INSPECT VEHICLE CONTROL MODULE

•  Inspect the vehicle control module.
(See VEHICLE CONTROL MODULE (V/C-MODULE) INSPECTION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

•  Is the vehicle control module normal?

Yes

Go to the next step.

No

Replace the vehicle control module.

(See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

3

VERIFY MRCC WARNING LIGHT (AMBER) ILLUMINATION CONDITION

•  Switch the ignition ON (engine off or on).

•  After switching the ignition ON (engine off or or), does the MRCC warning light (amber) remain illuminated even after 5 s or more have elapsed?

Note

•  After switching the ignition ON (engine off or on), the MRCC warning light (amber) is illuminated for approx. 3 s for MRCC warning light (amber) illumination verification.

Yes

Replace the vehicle control module.

(See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

No

Symptom troubleshooting is completed.

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	INSPECT VEHICLE CONTROL MODULE • Inspect the vehicle control module. (See VEHICLE CONTROL MODULE (V/C-MODULE) INSPECTION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].) • Is the vehicle control module normal?	Yes	Go to the next step.
2		No	Replace the vehicle control module. (See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)
3	VERIFY MRCC WARNING LIGHT (AMBER) ILLUMINATION CONDITION • Switch the ignition ON (engine off or on). • After switching the ignition ON (engine off or or), does the MRCC warning light (amber) remain illuminated even after 5 s or more have elapsed? Note • After switching the ignition ON (engine off or on), the MRCC warning light (amber) is illuminated for approx. 3 s for MRCC warning light (amber) illumination verification.	Yes	Replace the vehicle control module. (See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)
3		No	Symptom troubleshooting is completed.