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HOMESERVICE MANUALSTOYOTA2010TACOMA BASE, 4D PICKUP, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTINFOTAINMENTAUDIO / VISUAL (DIAGNOSTIC CODES & SYMPTOM TESTS)AUDIO AND VISUAL SYSTEMSYMPTOM TESTMICROPHONE CIRCUIT BETWEEN MICROPHONE AND RADIO RECEIVERPROCEDURE
2010 Toyota Tacoma Base, 4D Pickup, Standard

Microphone Circuit between Microphone and Radio Receiver: Procedure

2010 Toyota Tacoma Base, 4D Pickup, StandardSECTION Procedure
  1. CHECK HARNESS AND CONNECTOR (TSW- - MGND) 
    1. Disconnect the R10 radio receiver assembly connector.
      Fig 1: Identifying R10 Radio Receiver Assembly Connector Terminals
      GTY208777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      R10-1 (TSW-) - R10-6 (MGND) Always Below 1 Ω
      R10-1 (TSW-) - Body ground Always 10 kΩ or higher
    3. Reconnect the radio receiver assembly connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (INNER REAR VIEW MIRROR ASSEMBLY - RADIO RECEIVER ASSEMBLY) 
    1. Disconnect the I8 inner rear view mirror assembly connector.
      Fig 2: Identifying I8 Inner Rear View Mirror Assembly And R10 Radio Receiver Assembly Connector
      GTY208778Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the R10 radio receiver assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I8-9 (ACC) - R10-3 (MCVD) Always Below 1 Ω
      I8-11 (MI1+) - R10-2 (MIC+)
      I8-12 (MIC-) - R10-5 (MIC-)
      I8-9 (ACC) - Body ground Always 10 kΩ or higher
      I8-11 (MI1+) - Body ground
      I8-12 (MIC-) - Body ground
    4. Reconnect the inner rear view mirror assembly connector.
    5. Reconnect the radio receiver assembly connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  3. INSPECT RADIO RECEIVER ASSEMBLY (MCVD VOLTAGE) 
    1. Measure the voltage according to the value(s) in the table below.
      Fig 3: Identifying R10 Radio Receiver Assembly Connector Terminal
      GTY179379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      R10-3 (MCVD) - Body ground Ignition switch ON 4 to 6 V

    NG → See step   5 

    OK → See step   4 

  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  5. REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL 
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.