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 DISPLAY ITEM

U1255 satellite radio tuner
U1310 AV control unitBose speaker AMP
Removal and Installation
Bose speaker amp.
Screws
REMOVAL
NOTE:
If removing the BOSE speaker amp. bracket, it is necessary to remove the parcel
shelf finisher. The BOSE
speaker amp. can be removed without removing the BOSE speaker amp. bracket.
Disconnect the battery negativ ...
Combination switch input circuit
Diagnosis Procedure
1. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
Turn the ignition switch OFF.
Disconnect the BCM and combination switch.
Check continuity between BCM harness connector and combination
switch harness connector.
2. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
...
ECU diagnosis information
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 ...