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 unitP0138, P0158 HO2S2
Description
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the exhaust gas on each bank.
Even if switching characteristics of the air fuel ratio (A/F) sensor 1
are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal
...
Adjust
For adjustable head restraint/headrest
Adjust the head restraint/headrest so the center
is level with the center of your ears. If your ear
position is still higher than the recommended
alignment, place the head restraint/headrest at
the highest position.
For non-adjustable head restraint/hea ...
Diagnosis and repair workflow
Work Flow
WORK FLOW
DETAILED FLOW
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when the incident/malfunction occurred).
2. CHECK DTC
Check DTC.
Perform the following procedure if DTC is displayed.
...