DTC B2A03: GPS Antenna Circuit

Diagnosis start condition:

When ignition switch is ON.

DTC detecting condition:

Any of the followings continues for 5 seconds or more.

GPS antenna impedance is more than 1 MΩ. (Detached antenna, etc.)
GPS antenna impedance is less than 10 Ω. (Short-circuited antenna, etc.)
GPS antenna load current is less than 10 MA. (Antenna open circuit)
GPS antenna load current is more than 40 MA. (Short-circuited antenna)

Trouble symptom:

Telematics function cannot be used.
RED LED illuminates.

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 DTC .
1. Turn the ignition switch to ON.
2. Read the DTC of [Telematics] using the Subaru Select Monitor. Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC B2A03 displayed? (Current malfunction)

Yes: Go to 2.

No: Even if DTC is displayed, 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.
CHECK GPS ANTENNA .
Visually check the GPS antenna. Ref. to ENTERTAINMENT & MONITORING>ANTENNA .

Is the check result OK?

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

No: Replace the GPS antenna. Ref. to ENTERTAINMENT & MONITORING>ANTENNA .