DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1244 GPS antenna
U1300 AV comm circuitP0128 thermostat function
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301, P0302, P0303, P0304, P0305 or
P0306, first perform
the trouble diagnosis for DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306.
Engine coolant temperature has not risen enough to open the thermostat even ...
BCM (body control module)
Reference Value
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following
functions. Refer to the Signal Tech II
User Guide for additional information.
Activate and display TPMS transmitter IDs
Display tire pressure reported by the TPMS transmitter
Read TPMS DTCs
...
Power supply and ground circuit
AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure
1.CHECK FUSES
Check that the following AV control unit fuses are not blown.
2.POWER SUPPLY CIRCUIT CHECK
Disconnect AV control unit connectors M160 and M163.
Check voltage between the AV control unit connectors M160
and M163 ...