Inspection Procedure

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

   Standard Voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   L23-18 (MUT6) - Body ground	Engine switch on (ACC), audio system is playing → changing modes	3.5 V or higher → Below 1 V

Fig 1: Identifying Multi-Display Selector Connectors Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to step 2 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

1. Check if the SDARS system is equipped on the vehicle.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   w/ SDARS System	A
   w/o SDARS System	B

B:  Go to step  6

A: Go to next Step 

1. Disconnect the F24 receiver connector.
2. Disconnect the L37 tuner connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   F24-6 (MUTE) - L37-6 (MUTE)	Always	Below 1 Ω
   F24-6 (MUTE) - Body ground	Always	10 kΩ or higher

Fig 2: Identifying F24 Receiver Connector And L37 Tuner Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next Step 

1. Disconnect the L39 tuner connector.
2. Disconnect the L23 selector connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   L39-15 (MUT2) - L23-18 (MUT6)	Always	Below 1 Ω
   L23-18 (MUT6) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying L39 Tuner Connector And L23 Selector Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next Step 

1. Replace the stereo component tuner with a normal one and check if the same problem occurs again (See REMOVAL  ).

   OK: Same problem does not occur. 

NG:  Go to step  7

OK: END (STEREO COMPONENT TUNER IS DEFECTIVE) 

1. Disconnect the F24 receiver connector.
2. Disconnect the L23 selector connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   F24-6 (MUTE) - L23-18 (MUT6)	Always	Below 1 Ω
   F24-6 (MUTE) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 4: Identifying L23 Selector Connector And L24 Selector Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next Step 

1. Reconnect the L23 selector connector.
2. Measure the voltage according to the value (s) in the table below.

   Standard Voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   L23-18 (MUT6) - Body ground	Engine switch on (ACC), audio system is playing → changing modes	3.5 V or higher → Below 1 V

NG: REPLACE MULTI-DISPLAY SELECTOR  (See REMOVAL  )

Fig 5: Identifying L23 Selector Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE RADIO RECEIVER ASSEMBLY  (See REMOVAL  )