Radio Broadcast cannot be Received or Poor Reception
AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Radio and Display Type without Intuitive Parking Assist System): Radio Broadcast cannot be Received or Poor Reception
- Radio Broadcast cannot be Received or Poor Reception
INSPECTION PROCEDURE
NOTICE:
After replacing the radio and display receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary (w/ SDARS System).
PROCEDURE
1. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
(a) Check the radio automatic station search function.
(1) Check the radio automatic station search function by activating it.
Result:
B -- REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Removal
A -- Continue to next step.
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.
Result:
NOTICE:
Do not remove optional components without the permission of the customer.
B -- REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)
A -- Continue to next step.
3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
(a) Preparation for check
(1) Remove the antenna connector from the radio and display receiver assembly.
(b) Check for noise
(1) Turn the power switch on (ACC) with the radio and display receiver assembly connector connected.
(2) Turn the radio on and tune into AM 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 -- REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Removal
OK -- Continue to next step.
4. CHECK WINDOW GLASS ANTENNA WIRE
(a) Check for continuity in the window glass antenna wire.
HINT
Check for continuity at the center of each antenna wire as shown in the illustration.
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.
OK:
There is continuity in the window glass antenna wire.
Text in Illustration
NG -- REPAIR WINDOW GLASS ANTENNA WIRE Service and Repair
OK -- Continue to next step.
5. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY
(a) Disconnect the radio and display receiver assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Removal
OK -- Continue to next step.
6. REPLACE ANTENNA CORD SUB-ASSEMBLY
(a) Replace the antenna cord sub-assembly and check if radio broadcasts can be received normally Removal.
OK:
Radio broadcasts can be received normally.
NG -- CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY
OK -- NORMAL OPERATION
7. CHECK NO. 2 ANTENNA CORD SUB-ASSEMBLY
(a) Disconnect the No. 2 antenna cord sub-assembly.
(b) Measure the resistance of the No. 2 antenna cord sub-assembly to check for an open circuit in the No. 2 antenna cord sub-assembly.
Standard Resistance:
Below 1 Ohms
(c) Measure the resistance between the No. 2 antenna cord sub-assembly and body ground to check for a short circuit in the No. 2 antenna cord sub-assembly.
Standard Resistance:
10 kOhms or higher
NG -- REPLACE NO. 2 ANTENNA CORD SUB-ASSEMBLY Removal
OK -- Continue to next step.
8. REPLACE AMPLIFIER ANTENNA ASSEMBLY
(a) Replace the amplifier antenna assembly and check if radio broadcasts can be received normally Removal.
OK:
Radio broadcasts can be received normally.
NG -- REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Removal
OK -- NORMAL OPERATION