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Home >> Lexus >> 2010 >> RX 350 FWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes (B1627/82 - B1818/54) >> Airbag System >> DTC B1660/43: Passenger Airbag ON/OFF Indicator Circuit Malfunction (2010 To 08/2009) >> Procedure

DTC B1660/43: Passenger Airbag ON/OFF Indicator Circuit Malfunction (2010 To 08/2009): Procedure

  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION 
    1. Turn the engine switch on (IG).
    2. Check the passenger airbag ON/OFF indicator operation.

      HINT: 

      Refer to the normal condition of the passenger airbag ON/OFF indicator. Refer to DIAGNOSIS SYSTEM .

      Fig 1: Passenger Airbag On/Off Indicator Conditions Graph
      GTY272145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result

      ON/OFF Indicator Illumination Proceed to
      Always ON A
      OFF B

    B → See step   9 

    A: Go to next step 

  2. CHECK CONNECTORS 
    1. Turn the engine switch off.
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Check that the connectors are properly connected to the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also check that the connectors that link the instrument panel wire and No. 2 instrument panel wire are properly connected.
      • *1: w/ Navigation System
      • *2: w/o Navigation System

      OK

      The connectors are properly connected.

      HINT: 

      If the connectors are not connected securely, reconnect the connectors and proceed to 3 the next inspection.

    4. Disconnect the connectors from the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also disconnect the connectors that link the instrument panel wire and No. 2 instrument panel wire.
      • *1: w/ Navigation System
      • *2: w/o Navigation System
    5. Check that the terminals of connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    NG → REPLACE WIRE HARNESS 

    OK: Go to next step 

  3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR 
    1. Connect the connectors that link the instrument panel wire and No. 2 instrument panel wire.
      Fig 2: Identifying Passenger Airbag On/Off Indicator (With & Without Navigation System)
      GTY275006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the connector to the radio receiver assembly*1 or accessory meter assembly*2.
      • *1: w/ Navigation System
      • *2: w/o Navigation System
    3. Connect the cable to the negative (-) battery terminal.
    4. Turn the engine switch on (IG).
    5. Check the passenger airbag ON/OFF indicator operation.

      OK

      The passenger airbag ON/OFF indicator does not come on.

    NG → See step   5 

    OK: Go to next step 

  4. CHECK CENTER AIRBAG SENSOR ASSEMBLY 
    1. Connect the connector to the center airbag sensor assembly.
      Fig 3: Checking Center Airbag Sensor Assembly
      GTY256051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal.
    3. Turn the engine switch on (IG), and wait for at least 60 seconds.
    4. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR .
    5. Turn the engine switch off.
    6. Turn the engine switch on (IG), and wait for at least 60 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR .

      OK

      DTC B1660/43 is not output.

      TEXT IN ILLUSTRATION

      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      • *1: w/ Navigation System
      • *2: w/o Navigation System

      HINT: 

      Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.

    NG → See step   17 

    OK → See step   18 

  5. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN) 
    1. Turn the engine switch off.
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Disconnect the connector from the radio receiver assembly*1 or accessory meter assembly*2.
      • *1: w/ Navigation System
      • *2: w/o Navigation System
    4. Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B.
      NOTE:

      Do not forcibly insert SST into the terminals of the connector when connecting the wire.

      • SST: 09843-18040 
    5. w/ Navigation System:
      Fig 4: Checking Passenger Airbag On/Off Indicator Circuit (Open) (With Navigation System)
      GTY277434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always Below 1 Ω
        TEXT IN ILLUSTRATION

        *1 Radio Receiver Assembly *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Center Airbag Sensor Assembly)        		 *4 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *5 Connector B *6 Connector E
    6. w/o Navigation System:
      Fig 5: Checking Passenger Airbag On/Off Indicator Circuit (Open) (Without Navigation System)
      GTY265603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always Below 1 Ω
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Center Airbag Sensor Assembly)        		 *4 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *5 Connector B *6 Connector E

    NG → See step   20 

    OK: Go to next step 

  6. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT) 
    1. Disconnect SST from connector B.
    2. w/ Navigation System:
      Fig 6: Checking Passenger Airbag On/Off Indicator Circuit (Short) (With Navigation System)
      GTY270252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Radio receiver Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *4 Connector E
    3. w/o Navigation System:
      Fig 7: Checking Passenger Airbag On/Off Indicator Circuit (Short) (Without Navigation System)
      GTY277417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *4 Connector E

    NG → See step   21 

    OK: Go to next step 

  7. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND) 
    1. w/ Navigation System:
      Fig 8: Checking Passenger Airbag On/Off Indicator Circuit (Short) (With Navigation System)
      GTY270252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G8-1 (ARON) - Body ground Always 1 MΩ or higher
        G8-10 (AIR) - Body ground Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Radio receiver Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *4 Connector E
    2. w/o Navigation System:
      Fig 9: Checking Passenger Airbag On/Off Indicator Circuit (Short) (Without Navigation System)
      GTY277417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G1-8 (PAON) - Body ground Always 1 MΩ or higher
        G1-7 (P-AB) - Body ground Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *4 Connector E

    NG → See step   22 

    OK: Go to next step 

  8. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
    2. Turn the engine switch on (IG).
    3. w/ Navigation System:
      Fig 10: Checking Passenger Airbag On/Off Indicator Circuit (Short) (With Navigation System)
      GTY270252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G8-1 (ARON) - Body ground Engine switch on (IG) Below 1 V
        G8-10 (AIR) - Body ground Engine switch on (IG) Below 1 V
        TEXT IN ILLUSTRATION

        *1 Radio receiver Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *4 Connector E
    4. w/o Navigation System:
      Fig 11: Checking Passenger Airbag On/Off Indicator Circuit (Short) (Without Navigation System)
      GTY277417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G1-8 (PAON) - Body ground Engine switch on (IG) Below 1 V
        G1-7 (P-AB) - Body ground Engine switch on (IG) Below 1 V
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *4 Connector E

    NG → See step   23 

    OK → See step   17 

  9. CHECK CONNECTORS 
    1. Turn the engine switch off.
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Check that the connectors are properly connected to the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also check that the connectors that link the instrument panel wire and No. 2 instrument panel wire are properly connected.
      • *1: w/ Navigation System
      • *2: w/o Navigation System

      OK

      The connectors are properly connected.

      HINT: 

      If the connectors are not connected securely, reconnect the connectors and proceed to 10 the next inspection.

    4. Disconnect the connectors from the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also disconnect the connectors that link the instrument panel wire and No. 2 instrument panel wire.
      • *1: w/ Navigation System
      • *2: w/o Navigation System
    5. Check that the terminals of connectors are not damaged.

      OK

      The terminals are not deformed or damaged.

    NG → REPLACE WIRE HARNESS 

    OK: Go to next step 

  10. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN) 
    1. Connect the connectors that link the instrument panel wire and No. 2 instrument panel wire.
    2. Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B.
      NOTE:

      Do not forcibly insert SST into the terminals of the connector when connecting the wire.

      • SST: 09843-18040 
    3. w/ Navigation System:
      Fig 12: Checking Passenger Airbag On/Off Indicator Circuit (Open) (With Navigation System)
      GTY277434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always Below 1 Ω
        TEXT IN ILLUSTRATION

        *1 Radio Receiver Assembly *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Center Airbag Sensor Assembly)        		 *4 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *5 Connector B *6 Connector E
    4. w/o Navigation System:
      Fig 13: Checking Passenger Airbag On/Off Indicator Circuit (Open) (Without Navigation System)
      GTY265603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always Below 1 Ω
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Center Airbag Sensor Assembly)        		 *4 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *5 Connector B *6 Connector E

    NG → See step   20 

    OK: Go to next step 

  11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT) 
    1. Disconnect SST from connector B.
    2. w/ Navigation System:
      Fig 14: Checking Passenger Airbag On/Off Indicator Circuit (Short) (With Navigation System)
      GTY270252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G8-1 (ARON) - G8-10 (AIR) Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Radio Receiver Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *4 Connector E
    3. w/o Navigation System:
      Fig 15: Checking Passenger Airbag On/Off Indicator Circuit (Short) (Without Navigation System)
      GTY277417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G1-8 (PAON) - G1-7 (P-AB) Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *4 Connector E

    NG → See step   21 

    OK: Go to next step 

  12. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND) 
    1. w/ Navigation System:
      Fig 16: Checking Passenger Airbag On/Off Indicator Circuit (Short) (With Navigation System)
      GTY270252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G8-1 (ARON) - Body ground Always 1 MΩ or higher
        G8-10 (AIR) - Body ground Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Radio Receiver Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *4 Connector E
    2. w/o Navigation System:
      Fig 17: Checking Passenger Airbag On/Off Indicator Circuit (Short) (Without Navigation System)
      GTY277417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        G1-8 (PAON) - Body ground Always 1 MΩ or higher
        G1-7 (P-AB) - Body ground Always 1 MΩ or higher
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *4 Connector E

    NG → See step   22 

    OK: Go to next step 

  13. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+) 
    1. Connect the cable to the negative (-) battery terminal.
    2. Turn the engine switch on (IG).
    3. w/ Navigation System:
      Fig 18: Checking Passenger Airbag On/Off Indicator Circuit (Short) (With Navigation System)
      GTY270252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G8-1 (ARON) - Body ground Engine switch on (IG) Below 1 V
        G8-10 (AIR) - Body ground Engine switch on (IG) Below 1 V
        TEXT IN ILLUSTRATION

        *1 Radio Receiver Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Radio Receiver Assembly)
        *4 Connector E
    4. w/o Navigation System:
      Fig 19: Checking Passenger Airbag On/Off Indicator Circuit (Short) (Without Navigation System)
      GTY277417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G1-8 (PAON) - Body ground Engine switch on (IG) Below 1 V
        G1-7 (P-AB) - Body ground Engine switch on (IG) Below 1 V
        TEXT IN ILLUSTRATION

        *1 Accessory Meter Assembly
        *2 Center Airbag Sensor Assembly
        *3 Front view of wire harness connector
        (to Accessory Meter Assembly)
        *4 Connector E

    NG → See step   23 

    OK: Go to next step 

  14. CHECK PASSENGER AIRBAG ON / OFF INDICATOR (SOURCE VOLTAGE) 
    1. Turn the engine switch on (IG).
    2. w/ Navigation System:
      Fig 20: Identifying G8 Passenger Airbag On / Off Indicator (Source Voltage) (W/ Navigation System)
      GTY263698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G8-15 (IG+) - Body ground Engine switch on (IG) 10 to 14 V

        Result

        Result Proceed to
        OK A
        NG B
        TEXT IN ILLUSTRATION

        *1 Front view of wire harness connector
        (to Radio Receiver Assembly)
    3. w/o Navigation System:
      Fig 21: Identifying G8 Passenger Airbag On / Off Indicator (Source Voltage) (W/O Navigation System)
      GTY262878Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Switch Condition Specified Condition
        G1-2 (IG2) - Body ground Engine switch on (IG) 10 to 14 V

        Result

        Result Proceed to
        OK A
        NG C
        TEXT IN ILLUSTRATION

        *1 Front view of wire harness connector
        (to Accessory Meter Assembly)

    C → REPLACE WIRE HARNESS (ACCESSORY METER ASSEMBLY - BATTERY) OR BATTERY 

    B → REPLACE WIRE HARNESS (RADIO RECEIVER ASSEMBLY - BATTERY) OR BATTERY 

    A: Go to next step 

  15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR 
    1. Turn the engine switch off.
      Fig 22: Identifying F29 Passenger Airbag On/Off Indicator Terminals (W/ Navigation System)
      GTY277908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Connect the connector to the radio receiver assembly*1 or accessory meter assembly*2.
      • *1: w/ Navigation System
      • *2: w/o Navigation System
    4. Connect the cable to the negative (-) battery terminal.
    5. Turn the engine switch on (IG).
    6. Check the indicator according to the conditions in the table below.

      Result

      Tester Connection Switch Condition Passenger Airbag ON/OFF Indicator
      F29-23 (PAON) - Body ground Engine switch on (IG) "ON" comes on
      F29-17 (P-AB) - Body ground Engine switch on (IG) "OFF" comes on

      Result

      Result Proceed to
      OK A
      NG (w/ Navigation System) B
      NG (w/o Navigation System) C
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Center Airbag Sensor Assembly)

    C → See step   19 

    B → See step   24 

    A: Go to next step 

  16. CHECK CENTER AIRBAG SENSOR ASSEMBLY 
    1. Turn the engine switch off.
      Fig 23: Checking Center Airbag Sensor Assembly
      GTY256051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Connect the connector to the center airbag sensor assembly.
    4. Connect the cable to the negative (-) battery terminal.
    5. Turn the engine switch on (IG), and wait for at least 60 seconds.
    6. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR .
    7. Turn the engine switch off.
    8. Turn the engine switch on (IG), and wait for at least 60 seconds.
    9. Check for DTCs. Refer to DTC CHECK / CLEAR .

      OK

      DTC B1660/43 is not output.

      TEXT IN ILLUSTRATION

      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      • *1: w/ Navigation System
      • *2: w/o Navigation System

      HINT: 

      Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.

    NG → See step   17 

    OK → See step   18 

  17. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
  18. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  19. REPLACE ACCESSORY METER ASSEMBLY. Refer to  REMOVAL 
  20. CHECK INSTRUMENT PANEL WIRE (OPEN) 
    1. Disconnect the instrument panel wire from the No. 2 instrument panel wire.
      Fig 24: Identifying Instrument Panel Wire (Open) Using SST
      GTY263351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      SST has already been inserted into connector B.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      FG1-1 (PAON) - FG1-12 (P-AB) Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2 *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire *4 Instrument Panel Wire
      *5 Front view of wire harness connector
      (to Center Airbag Sensor Assembly)      		 *6 Front view of wire harness connector
      (to No. 2 Instrument Panel Wire)
      *7 Connector B *8 Connector C
      • *1: w/ Navigation System
      • *2: w/o Navigation System

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE NO. 2 INSTRUMENT PANEL WIRE 

  21. CHECK INSTRUMENT PANEL WIRE (SHORT) 
    1. Disconnect the instrument panel wire from the No. 2 instrument panel wire.
      Fig 25: Checking Instrument Panel Wire (Short)
      GTY278230Courtesy 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
      FG1-1 (PAON) - FG1-12 (P-AB) Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire
      *4 Instrument Panel Wire
      *5 Front view of wire harness connector
      (to No. 2 Instrument Panel Wire)
      *6 Connector C
      • *1: w/ Navigation System
      • *2: w/o Navigation System

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE NO. 2 INSTRUMENT PANEL WIRE 

  22. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) 
    1. Disconnect the instrument panel wire from the No. 2 instrument panel wire.
      Fig 26: Checking Instrument Panel Wire (Short)
      GTY278230Courtesy 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
      FG1-1 (PAON) - Body ground Always 1 MΩ or higher
      FG1-12 (P-AB) - Body ground Always 1 MΩ or higher
      TEXT IN ILLUSTRATION

      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire
      *4 Instrument Panel Wire
      *5 Front view of wire harness connector
      (to No. 2 Instrument Panel Wire)
      *6 Connector C
      • *1: w/ Navigation System
      • *2: w/o Navigation System

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE NO. 2 INSTRUMENT PANEL WIRE 

  23. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) 
    1. Turn the engine switch off.
      Fig 27: Checking Instrument Panel Wire (Short)
      GTY278230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Disconnect the instrument panel wire from the No. 2 instrument panel wire.
    4. Connect the cable to the negative (-) battery terminal.
    5. Turn the engine switch on (IG).
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      FG1-1 (PAON) - Body ground Engine switch on (IG) Below 1 V
      FG1-12 (P-AB) - Body ground Engine switch on (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *1 Radio Receiver Assembly*1 or Accessory Meter Assembly*2
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Instrument Panel Wire
      *4 Instrument Panel Wire
      *5 Front view of wire harness connector
      (to No. 2 Instrument Panel Wire)
      *6 Connector C
      • *1: w/ Navigation System
      • *2: w/o Navigation System

    NG → REPLACE INSTRUMENT PANEL WIRE 

    OK → REPLACE NO. 2 INSTRUMENT PANEL WIRE 

  24. REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL 
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