Diagnostic Assist Code "90" Radio Reception Condition Inspection
- Tune in the radio.
- Input diagnostic assist code "90" according to the diagnostic assist code input procedure. (See Diagnostic Assist Code Input Procedure .)
- Inspect the malfunctioning location according to the following table:CAUTION:
- Even if the system is normal, radio reception may be difficult depending on where the system is inspected (indoors/outdoors, or conditions at the location). Before inspecting the system, verify that radio reception is adequate.
- When performing the inspection, select a frequency (radio station) with optimum reception in the area.
Inspection Display Of Center Display (Diagnostic Result) Action - Start the radio reception condition inspection mode.
- Select frequency (radio station) by operating the commander knob.
- Verify the inspection result.
TAU AM Reception Level Test Result: 10-5 Radio reception condition is normal - Glass antenna, antenna amplifier, center roof antenna, antenna feeder, and tuner and amplifier unit (TAU) are normal.
TAU AM Reception Level Test Result: 4-3 Radio reception condition is unstable - Change frequencies and re-perform the inspection.
TAU AM Reception Level Test Result: 2-0 Inspect the glass antenna, antenna amplifier, center roof antenna, and antenna feeder.
(See GLASS ANTENNA INSPECTION .) (See ANTENNA AMPLIFIER INSPECTION .) (See CENTER ROOF ANTENNA INSPECTION .)
(See ANTENNA FEEDER INSPECTION .)- If the glass antenna, antenna amplifier, center roof antenna, or antenna feeder is malfunctioning:
- Replace the malfunctioning part. (See REAR WINDOW DEFOGGER REPAIR .) (See ANTENNA AMPLIFIER REMOVAL/INSTALLATION .) (See CENTER ROOF ANTENNA REMOVAL/INSTALLATION .) (See ANTENNA FEEDER REMOVAL/INSTALLATION .)
- If the glass antenna, antenna amplifier, center roof antenna, and antenna feeder are normal:
- Replace the tuner and amp unit (TAU). (See TUNER AND AMP UNIT (TAU) REMOVAL/INSTALLATION .)
- Cancel the diagnostic assist function according to the ending procedure. (See Ending Procedure .)