PrecautionU1300 AV comm circuit
Description
U1300 is indicated when a communication signal malfunction occurs. U1300 is
indicated along with DTCs that identify components connected to the AV
control unit through communication lines. Determine the possible malfunction
cause from the table below.
SELF-DIAGNOSIS RESULTS DISPL ...
Diagnosis system (HVAC)
CONSULT Function
CONSULT can display each diagnosis item using the diagnosis test modes as
shown.
CONSULT application items
SELF DIAGNOSTIC RESULT
Display Item List
*: Perform self-diagnosis under sunshine. When performing indoors, aim a
light (more than 60 W) at sunload sensor, ...
Power supply and ground circuit
BCM
BCM : Diagnosis Procedure
1. CHECK FUSE AND FUSIBLE LINK
Check if the following BCM fuses or fusible link are blown.
2. CHECK POWER SUPPLY CIRCUIT
Turn ignition switch OFF.
Disconnect BCM.
Check voltage between BCM harness connector and ground.
3. CHECK GROUND CIRCUIT
Che ...