| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000271X7 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): Radio Wave Reception Failure; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ] | ||
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Radio Wave Reception Failure |
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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![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): PRECAUTION](/t3Portal/stylegraphics/info.gif)
PROCEDURE
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1. |
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Check the radio automatic station search function by activating it.
OK:
Automatic station search function stops on a station.
| OK |
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2. |
CHECK OPTIONAL COMPONENTS |
(a) Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.
OK:
Optional components are not installed.
NOTICE:
Do not remove optional components without the permission of the customer.
| NG |
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REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) |
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3. |
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY |
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(a) Preparation for check (1) Disconnect the RA radio and display receiver assembly connector. |
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(b) Check for noise
(1) Turn the ignition switch to ON with the radio and display receiver assembly connector connected.
(2) Turn the radio and display receiver assembly on and tune into FM mode.
(3) Place a screwdriver, thin wire or other metal object on the radio and display receiver assembly antenna jack and check that noise can be heard from the speakers.
OK:
Noise can be heard from the speakers.
| NG |
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REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
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4. |
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY |
(a) Disconnect the RA radio and display receiver assembly connector.
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(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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| NG |
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REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
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5. |
CHECK WINDOW GLASS ANTENNA WIRE |
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(a) Check for continuity in the window glass antenna wire. NOTICE: When cleaning the glass, wipe it in the direction of the wire with a soft dry cloth. Take care not to damage the wire. Do not use detergents or glass cleaners with abrasive ingredients. When measuring resistance, wrap a piece of tin foil around the tip of each probe and press the foil against the wire with your finger, as shown in the illustration. HINT: Check for continuity at the center of each antenna wire as shown in the illustration. OK: There is continuity in the window glass antenna wire. |
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| NG |
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6. |
INSPECT ANTENNA CORD SUB-ASSEMBLY |
(a) Replace the antenna cord sub-assembly with a new or known good one and check if radio broadcasts can be received normally.
Click here
OK:
Radio broadcasts can be received normally.
| OK |
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END |
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7. |
INSPECT ANTENNA CORD SUB-ASSEMBLY (for Type A) |
(a) Replace the antenna cord sub-assembly (for Type A) with a new or known good one and check if radio broadcasts can be received normally.
Click here
OK:
Radio broadcasts can be received normally.
| OK |
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END |
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8. |
INSPECT NO. 1 AMPLIFIER ANTENNA ASSEMBLY |
(a) Replace the No. 1 amplifier antenna assembly with a new or known good one and check if radio broadcasts can be received normally.
Click here
OK:
Radio broadcasts can be received normally.
| OK |
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END |
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9. |
INSPECT ANTENNA CORD SUB-ASSEMBLY (for Type C) |
(a) Replace the antenna cord sub-assembly (for Type C) with a new or known good one and check if radio broadcasts can be received normally.
Click here
OK:
Radio broadcasts can be received normally.
| OK |
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END |
| NG |
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REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY
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