NAVIGATION / MULTI INFO DISPLAY NAVIGATION SYSTEM Radio Broadcast cannot be Received or Poor Reception
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
- ·
A communication malfunction DTC may be stored.
·The radio and display receiver assembly may not operate normally.
- HINT:
-
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
PROCEDURE
Check the radio automatic station search function.
Check the radio automatic station search function by activating it.
- Result:
Result Proceed to Automatic station search function does not stop. A Automatic station search function stops on a station. B
A
B
Check if any optional components that may decrease reception capacity, such as a sunshade film or telephone antenna, are installed.
- Result:
Result Proceed to Optional components are not installed. A Optional components are installed. B
- NOTICE:
-
Do not remove optional components without the permission of the customer.
A
B
Preparation for check
Disconnect the antenna connector from the radio and display receiver assembly.
Check for noise
Turn the ignition switch to ACC with the radio and display receiver assembly connector connected.
Turn the radio on and tune into AM mode.
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.
- Result:
Proceed to OK NG
OK
NG
Disconnect the RA radio and display receiver assembly connector.
| *a | Component without harness connected
(Radio and Display Receiver Assembly) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition RA-5 (ANT+) - Body ground Ignition switch ACC
Radio switch on and FM or AM selected11 to 14 V
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to No. 1 Amplifier Antenna Assembly) |
| *b | Front view of wire harness connector
(to Antenna Cord Sub-assembly) |
Disconnect the antenna connector from the No. 1 amplifier antenna assembly.
Disconnect the antenna connector from the antenna cord sub-assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A-1 - B-4 Always Below 1 Ω A-1a - B-4a Always Below 1 Ω A-2 - B-2 Always Below 1 Ω A-1 or B-4 - Body ground Always 10 kΩ or higher A-2 or B-2 - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *a | Front view of wire harness connector
(to No. 2 Antenna Cord Sub-assembly) |
| *b | Front view of wire harness connector
(to Radio and Display Receiver Assembly) |
Disconnect the antenna connector from the No. 2 antenna cord sub-assembly.
Disconnect the antenna connector from the radio and display receiver assembly.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition B-4 - RA-3 (MAIN) Always Below 1 Ω B-4a - RA-4 (GND) Always Below 1 Ω B-2 - RA-5 (ANT+) Always Below 1 Ω B-4 or RA-3 (MAIN) - Body ground Always 10 kΩ or higher B-2 or RA-5 (ANT+) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Check that the roof antenna pole sub-assembly is securely installed.
- OK:
The roof antenna pole sub-assembly is installed properly.
- Result:
Proceed to OK NG
OK
NG
Replace the No. 1 amplifier antenna assembly with a new or known good one and check if radio broadcasts can be received normally.
- OK:
Radio broadcasts can be received normally.
- Result:
Proceed to OK NG
OK
NG