Toyota Corolla Cross: Sound cannot be Heard Sound Quality is Poor only when Replaying USB Storage
Device or "iPod"
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection
or maintenance, performing initialization, registration or calibration may be needed.
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PROCEDURE
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1.
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CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER
ASSEMBLY - STEREO JACK ADAPTER ASSEMBLY)
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(a) Disconnect the I279 radio and display receiver assembly connector.
(b) Disconnect the I260 stereo jack adapter assembly connector.
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(c) Measure the resistance according to the value(s) in
the table below.
Standard Resistance:
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Tester Connection
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Condition
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Specified Condition
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I279-2 (US1-) - I260-4 (D-)
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Always
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Below 1 Ω
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I279-3 (US1+) - I260-1 (D+)
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Always
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Below 1 Ω
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I279-5 (USG1) - I260-5 (UJSS)
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Always
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Below 1 Ω
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I279-2 (US1-) or I260-4 (D-) - Body ground
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Always
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10 kΩ or higher
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I279-3 (US1+) or I260-1 (D+) - Body ground
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Always
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10 kΩ or higher
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I279-5 (USG1) or I260-5 (UJSS) - Body ground
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Always
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10 kΩ or higher
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 |
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*a
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Front view of wire harness connector
(to Radio and Display Receiver Assembly)
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*b
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Front view of wire harness connector
(to Stereo Jack Adapter Assembly)
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| NG |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
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| OK |
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2.
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CHECK STEREO JACK ADAPTER ASSEMBLY
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(a) Replace the stereo jack adapter assembly with a new or known
good one.
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(b) Check if the problem symptom recurs.
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Result
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Proceed to
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Malfunction disappears
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A
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Malfunction occurs
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B
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| A |
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END (STEREO JACK ADAPTER ASSEMBLY MALFUNCTIO)
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| B |
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REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
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WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection
or maintenance, performing initialization, registration or calibration may be n
REMOVAL
CAUTION / NOTICE / HINT
COMPONENTS (REMOVAL)
Procedure
Part Name Code
1
FRONT DOOR INSIDE HANDLE BEZEL PLUG
SEE MORE:
TERMINALS OF ECU CHECK VEHICLE APPROACHING SPEAKER CONTROLLER
(a) Disconnect the I256 vehicle approaching speaker controller connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Terminal Description
Condition Specified
DESCRIPTION This DTC is stored when a door control transmitter assembly with a different vehicle serial number is inserted into the ignition key cylinder.
DTC No. Detection Item
DTC Detection Condition Trouble Area
Note B2795
Unmatched Key Code A door control transmit
