INSPECTION PROCEDURE
PROCEDURE
CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY
Check the radio automatic station search function.
Check the radio automatic station search function by activating it.
Result | Proceed to |
---|---|
Automatic station search function stops on a station. | A |
Automatic station search function does not stop. | B |
B |
CHECK OPTIONAL COMPONENTS Click here |
A |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here
CHECK OPTIONAL COMPONENTS
Check optional components (sunshade film, telephone antenna, etc.).
Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.
Result | Proceed to |
---|---|
Optional components are installed. | A |
Optional components are not installed. | B |
Note
Do not remove any optional components installed by the customer without his or her consent.
B |
CHECK RADIO ANTENNA Click here |
A |
REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)
CHECK RADIO ANTENNA
Check for noise
Turn the engine switch on (ACC) with the multi-media module receiver assembly connector connected.
Turn the radio on and tune into AM mode.
Place a screwdriver, thin wire, or other metal object on the amplifier antenna threaded installation portion for the antenna and check that noise can be heard from the speakers.
Result | Proceed to |
---|---|
Noise does not occur. | A |
Noise occurs. | B |
B |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here |
A |
CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY
Preparation for check
Remove the antenna connector from the multi-media module receiver assembly.
Check for noise
Turn the engine switch on (ACC) with the multi-media module receiver assembly connector connected.
Turn the radio on and tune into AM mode.
Place a screwdriver, thin wire or other metal object on the multi-media module receiver assembly antenna jack and check that noise can be heard from the speakers.
OK |
---|
Noise can be heard from the speaker. |
NG |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here |
OK |
CHECK WINDOW GLASS ANTENNA WIRE
*1 | Tester Probe |
*2 | Antenna Wire |
*3 | Tin Foil |
Check for continuity of the antenna.
Tech Tips
Check for continuity at the center of each antenna wire as shown in the illustration.
Note
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 antenna. |
NG |
REPAIR WINDOW GLASS ANTENNA WIRE Click here |
OK |
INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY
Disconnect the multi-media module receiver assembly connector.
*a | Component without harness connected (Multi-media Module Receiver Assembly) |
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
NG |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here |
OK |
CHECK ANTENNA CORD SUB-ASSEMBLY
Remove the antenna connector of the multi-media module receiver assembly and antenna.
Measure the resistance between the antenna and multi-media module receiver assembly to check for an open circuit in the antenna cord.
Standard resistance |
---|
Below 1 Ω |
Measure the resistance between the antenna cord and body ground to check for a short circuit in the antenna cord.
Standard resistance |
---|
10 kΩ or higher |
NG |
REPLACE ANTENNA CORD SUB-ASSEMBLY Click here |
OK |
CHECK AMPLIFIER ANTENNA ASSEMBLY
Replace the amplifier antenna assembly and check if radio broadcasts can be received normally Click here.
OK |
---|
Radio broadcasts can be received. |
NG |
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here |
OK |
END