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

(a) Disconnect the I279 radio and display receiver assembly connector.

(b) Disconnect the I260 stereo jack adapter assembly connector.

(c) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition I279-2 (US1-) - I260-4 (D-) Always Below 1 Ω I279-3 (US1+) - I260-1 (D+) Always Below 1 Ω I279-5 (USG1) - I260-5 (UJSS) Always Below 1 Ω I279-2 (US1-) or I260-4 (D-) - Body ground Always 10 kΩ or higher I279-3 (US1+) or I260-1 (D+) - Body ground Always 10 kΩ or higher I279-5 (USG1) or I260-5 (UJSS) - Body ground Always 10 kΩ or higher

*a Front view of wire harness connector (to Radio and Display Receiver Assembly) *b Front view of wire harness connector (to Stereo Jack Adapter Assembly)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(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.

A

END (STEREO JACK ADAPTER ASSEMBLY MALFUNCTIO)

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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