Diagnosis Procedure
1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Main line between HVAC and A-bag circuitU1244 GPS antenna
DTC Logic
Diagnosis Procedure
1.GPS ANTENNA CHECK
Inspect GPS antenna and antenna feeder for damage or poor connection.
2.CHECK AV CONTROL UNIT VOLTAGE
Turn ignition switch ON.
Check voltage between AV control unit connector M165 terminal
105 and ground.
...
B2578, B2579 in-vehicle sensor
Description
In-vehicle Sensor
The in-vehicle sensor (1) is located on instrument lower cover
(LH).
It converts variations in compartment air temperature drawn from
the aspirator into a resistance value. It is then input into the A/C
auto amp.
In-vehicle Sensor Circuit
Aspira ...
U1255 satellite radio tuner
Descriptio
Part name
Description
SATELLITE RADIO TUNER
Inputs the satellite radio signal from satellite radio antenna
and outputs the sound signal to the AV control unit.
It is controlled with the AV control unit and serial
communicatio ...