NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Data Signal Circuit between Radio Receiver and Stereo Jack Adapter; 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000001KREA
Model Year Start: 2020	Model: GR Corolla	Prod Date Range: [09/2019 - 04/2020]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Data Signal Circuit between Radio Receiver and Stereo Jack Adapter; 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]

Data Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

The No. 1 stereo jack adapter assembly sends the sound data signal or image data signal from a USB device to the radio and display receiver assembly via this circuit.

WIRING DIAGRAM

w/o AUX Function

w/ AUX Function

PROCEDURE

1.	CHECK MODEL

(a) Choose the model to be inspected.

Result	Proceed to
w/o AUX Function	A
w/ AUX Function	B

GO TO STEP 3

2.	CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the x2 radio and display receiver assembly connector.

(b) Disconnect the x1 No. 1 stereo jack adapter assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
x2-2 (US1-) - x1-9 (UDO-)	Always	Below 1 Ω
x2-3 (US1+) - x1-10 (UDO+)	Always	Below 1 Ω
x2-5 (USG1) - x1-12 (UJSS)	Always	Below 1 Ω
x2-2 (US1-) or x1-9 (UDO-) - Body ground	Always	10 kΩ or higher
x2-3 (US1+) or x1-10 (UDO+) - Body ground	Always	10 kΩ or higher
x2-5 (USG1) or x1-12 (UJSS) - Body ground	Always	10 kΩ or higher

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

Front view of wire harness connector

(to No. 1 Stereo Jack Adapter Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY

3.	CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)

(a) Disconnect the I115 radio and display receiver assembly connector.

(b) Disconnect the I114 No. 1 stereo jack adapter assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I115-2 (US1-) - I114-9 (UDO-)	Always	Below 1 Ω
I115-3 (US1+) - I114-10 (UDO+)	Always	Below 1 Ω
I115-5 (USG1) - I114-12 (UJSS)	Always	Below 1 Ω
I115-2 (US1-) or I114-9 (UDO-) - Body ground	Always	10 kΩ or higher
I115-3 (US1+) or I114-10 (UDO+) - Body ground	Always	10 kΩ or higher
I115-5 (USG1) or I114-12 (UJSS) - Body ground	Always	10 kΩ or higher

Front view of wire harness connector

(to Radio and Display Receiver Assembly)

Front view of wire harness connector

(to No. 1 Stereo Jack Adapter Assembly)

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR