The Led Does Not Display The Status. (Led Malfunction)

Probable cause:

No contract agreement, DCM malfunction, telematics button malfunction

CAUTION:

After the DCM is replaced, registrations of CommCheck and immobilizer system are required. Ref. to ENTERTAINMENT & MONITORING>TELEMATICS SYSTEM>OPERATION>REGISTRATION (COMM CHECK) .
Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION .

CHECK THE SUBSCRIPTION STATUS .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor, check the following items in the [Data Monitor] of [Telematics]. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DATA MONITOR .
- Subscription Status
Is the data [Subscribed]?

Yes: Go to 2.

No: The user does not have a service subscription; therefore, it is not a failure. (Both LEDs are turned off.)
CHECK THE LED .
1. Turn the ignition switch to ON.
2. Check the LED condition.
Does the RED LED go off and the GREEN LED illuminate?

Yes: The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

No: Go to 3.
CHECK DTCS .
Read the DTC of [Telematics] using the Subaru Select Monitor. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

Is DTC B2A0A or B2A0B displayed?

Yes: Perform the diagnosis for the displayed DTC B2A0A or B2A0B. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0A: RED LED CIRCUIT . Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0B: GREEN LED CIRCUIT .

No: Go to 4.
CHECK THE LED ILLUMINATION CONDITION .
Using the Subaru Select Monitor, check the following items in the [Active Test] of [Telematics]. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>ACTIVE TEST .
- RED LED Lighting
- GREEN LED Lighting
Is the LED turned on or off?

Yes: Go to 5.

No: Go to 6.
CHECK THE LED .
1. Turn the ignition switch to ON.
2. Check the LED condition.
Does the RED LED go off and the GREEN LED illuminate?

Yes: The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

No: Replace the DCM. Ref. to ENTERTAINMENT & MONITORING>DATA COMMUNICATION MODULE .
CHECK THE LED .
1. Turn the ignition switch to OFF.
2. Check that the telematics button (LED) illuminates when battery voltage is applied to the telematics button (LED) unit.
CAUTION: Never connect the battery voltage terminals in reverse polarity, because reversed connection damages the telematics button (LED).

Terminals

RED side

No. 7 (+) - No. 1 (-):

GREEN side

No. 4 (+) - No. 1 (-):

Does the telematics button (LED) illuminate?

Yes: Replace the DCM. Ref. to ENTERTAINMENT & MONITORING>DATA COMMUNICATION MODULE .

No: Replace the telematics button. Ref. to ENTERTAINMENT & MONITORING>SWITCHES AND HARNESS .