Radio Broadcast Cannot be Received Or Poor Reception

NAVIGATION: NAVIGATION SYSTEM (for CrewMax): Radio Broadcast cannot be Received or Poor Reception

Radio Broadcast cannot be Received or Poor Reception

INSPECTION PROCEDURE

PROCEDURE

1. CHECK NAVIGATION RECEIVER
(a) Check the radio's automatic station search function.
(1) Check the radio's automatic station search function by activating it.
OK:
The radio's automatic station search function works properly.

Result





C -- CHECK OPTIONAL COMPONENTS
B -- REPLACE NAVIGATION RECEIVER
A -- REPLACE NAVIGATION RECEIVER
2. CHECK OPTIONAL COMPONENTS
(a) Check optional components (sun-shade film, telephone antenna, etc.).
(1) Check if any optional components, such as a sunshade film or telephone antenna that may decrease reception capacity, are installed.
OK:
Optional components are installed.
NOTE: Do not remove any optional components installed by the customer without his or her consent.

NG -- CHECK NAVIGATION RECEIVER
OK -- REMOVE AND RECHECK OPTIONAL COMPONENTS (SEE NOTICE ABOVE)
3. CHECK NAVIGATION RECEIVER





(a) Preparation for check
(1) Remove the antenna plug from the navigation receiver.
(b) Check for noise
(1) Turn the ignition switch ACC with the navigation receiver connector connected.
(2) Turn the radio on and enter AM mode.
(3) Place a screwdriver, thin wire, or other metal object on the navigation receiver's antenna jack and check that noise can be heard from the speaker.
OK:
Noise occurs.
NG -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK -- Continue to next step.
4. REPLACE POLE ANTENNA
(a) Replace the antenna and check that it operates normally.
OK:
The antenna operates normally.
NG -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK -- END