Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Audio system / Radio broadcast cannot be received (bad reception)
Toyota Corolla (E120): Radio broadcast cannot be received (bad reception)
Inspection procedure
1 Check if radio auto–search functions properly
- Check if the radio auto–search functions properly.
- Perform the auto–search of the radio and check that it functions
normally.
Standard: the radio auto–search functions properly.
2 Check optional component
- Check optional component (sun shade film, telephone antenna etc.).
- Check whether or not any optional component is installed, such as
the sunshade film and the
telephone antenna, is installed.
Standard: optional component is installed.
3 Check antenna for noise production
- Noise check with antenna
- with the ignition switch in acc, turn on the radio and choose the am mode.
- Place a tip of a screwdriver or the antenna of the antenna
assembly w/ holder and check that
the noise heard from the speaker.
Standard: noise occurs.
4 Inspect radio receiver assy(antenna)
- Preparation for check
- remove the antenna plug of the radio receiver assembly.
- noise check
- with the radio receiver assembly connector connected, turn the ignition switch to acc.
- Turn on the radio and choose the am mode.
- Place a flat–head screwdriver or a metal such as a
thin wire on the antenna jack of the radio receiver
assembly and check that the noise heard from the
speaker.
Standard: noise occurs.
Replace amplifier antenna assy
Other materials:
Circuit description
The shift solenoid valve sl is turned ”on” and ”off” by signals from the ecm
in order to control the hydraulic
pressure operation, the lock–up relay valve, which then the controls operation
of the lock–up clutch.
Fail safe function:
if the ecm detects a malfunction, it turns the ...
How to proceed with troubleshooting
Hint:
troubleshooting of the wireless door lock control system is based on
the premise that the power door
lock system is operating normally. Therefore, before troubleshooting the
wireless door lock control system,
first make certain that the the power door lock system is operating
...
Overhaul
Hint: components:
1. Drain manual transaxle oil (m/t transaxle)
torque: 39.2 Nvm (400 Kgf·cm, 29 ft·lbf)
2. Drain automatic transaxle fluid (a/t transaxle)
torque: 17.5 Nvm (178 Kgf·cm, 13 ft·lbf)
3. Remove front wheel
4. Remove engine under cover lh
5. Remove front axle hub lh nut
...