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Inspection Procedure

CHECK RADIO RECEIVER
1. 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 .
    
    NG: Go to step 2
    
    OK: REPLACE RADIO RECEIVER (See REMOVAL )
CHECK OPTIONAL COMPONENTS
1. Check optional components (sunshade film, telephone antenna, etc.).
  1. Check if any optional components that may decrease reception capacity, such as sunshade film or a telephone antenna, are installed.
    OK:
    
    Optional components are installed .
    
    NOTE: Do not remove any optional components installed by the customer without his or her consent.
    
    NG: Go to step 3
    
    OK: REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE)
CHECK RADIO RECEIVER
1. Preparation for check
  1. Remove the antenna plug from the radio receiver.
2. Check for noise
  1. Turn the ignition switch to ACC with the radio receiver connector connected.
  2. Turn the radio on and tune into AM mode.
  3. Place a screwdriver, thin wire, or other metal object on the radio receiver's antenna jack and check that noise can be heard from the speaker.
    
    Fig 1: Checking Radio Receiver
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    OK:
    
    Noise can be heard from the speaker .
    
    NG: REPLACE RADIO RECEIVER (See REMOVAL )
    
    OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - ANTENNA AMPLIFIER)

Disconnect the radio receiver connector and the antenna amplifier connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection

Condition

Specified Condition

E40-13 (ANT) - E3-1 (B)⁽¹⁾

Always

Below 1 Ω

E1-8 (ANT) - E3-1 (B)⁽²⁾

Always

Below 1 Ω

E40-13 (ANT) - Body ground⁽¹⁾

Always

10 kΩ or higher

E1-8 (ANT) - Body ground⁽²⁾

Always

10 kΩ or higher

⁽¹⁾	for 7 Speakers

⁽²⁾	Except for 7 Speakers

Fig 2: Identifying Radio Receiver And Antenna Amplifier Connectors

G06035695

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT RADIO RECEIVER

Reconnect the radio receiver connector.

Measure the voltage according to the value(s) in the table below.

Standard Voltage

VOLTAGE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E3-1 (B) - Body ground	Ignition switch ON Radio switch ON	11 to 14 V

Fig 3: Identifying E3 Antenna Amplifier Connector

G06010486

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RADIO RECEIVER (See REMOVAL )

OK: Go to Next Step

CHECK ANTENNA CORD
1. Remove the antenna plug of the radio receiver and antenna.
2. Measure the resistance between the antenna and radio receiver to check for an open circuit in the antenna cord.
  Standard Resistance:
  
  Below 1 Ω
3. 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 (See REMOVAL )
  
  OK: Go to Next Step
REPLACE AMPLIFIER ANTENNA
1. Replace the amplifier antenna and check if radio broadcasts can be received normally.
  OK:
  
  Radio broadcasts can be received .
  
  NG: REPLACE RADIO RECEIVER (See REMOVAL )
  
  OK: NORMAL OPERATION