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Inspection Procedure

  1. CHECK ILLUMINATION 
    1. Operate the rheostat and check that the amount of light for the combination meter assy, the radio, player, the integration control and panel etc.
      CHECKING ILLUMINATION

      A Combination meter does not change.
      B All lights do not change.
    1. B: Go to step   6 . 
    2. A: Go to next step. 
  2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1F-10 - Body ground Light control switch OFF Below 1 V
      1F-10 - Body ground Light control switch in TAIL or HEAD position 10 to 14 V
      Fig 1: Inspecting Instrument Panel Junction Block Assy
      G03367967Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    2. OK: Go to next step. 
  3. INSPECT COMBINATION METER ASSY 
    1. Disconnect the combination meter connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      C6-26 - Body ground Light control switch OFF Below 1 V
      C6-26 - Body ground Light control switch in TAIL or HEAD position 10 to 14 V
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION METER ASSY - INSTRUMENT PANEL JUNCTION BLOCK ASSY) 
    2. OK: Go to next step. 
      Fig 2: Inspecting Combination Meter Assy (C6-26)
      G03367968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT COMBINATION METER ASSY 
    1. Disconnect the combination meter connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      C6-27 - Body ground Rheostat switch MAX Below 1 Ω
      Fig 3: Inspecting Combination Meter Assy (C6-27)
      G03367969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step 5 
    2. OK: REPLACE COMBINATION METER ASSY (See  COMBINATION METER ASSY  ) 
  5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1F-11 - Body ground Rheostat switch MAX Below 1 Ω
      Fig 4: Inspecting Instrument Panel Junction Block Assy
      G03367970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSY - COMBINATION METER ASSY) (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
  6. INSPECT FUSE 
    1. Inspect the ALT fuse in the fusible link block assy.

      Standard: 

      Below 1 Ω 

    2. Inspect the TAIL fuse in the instrument panel junction block assy.

      Standard: 

      Below 1 Ω 

    1. NG: INSPECT FOR SHORT CIRCUIT IN HARNESS AND ALL COMPONENTS CONNECTED TO FUSE 
    2. OK: Go to next step. 
  7. INSPECT HEADLAMP DIMMER SWITCH ASSY 
    1. Inspect the light control switch of combination switch (See INSPECTION ).
    1. NG: REPLACE HEADLAMP DIMMER SWITCH ASSY (See  REPLACEMENT  ) 
    2. OK: Go to next step. 
  8. INSPECT LIGHT CONTROL RHEOSTAT 
    1. Inspect the light control rheostat (See INSPECTION ).
    1. NG: REPLACE LIGHT CONTROL RHEOSTAT 
    2. OK: Go to next step. 
  9. INSPECT LIGHT CONTROL RHEOSTAT 
    1. Disconnect the light control rheostat connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      R6-5 - Body ground Always Below 1 Ω
      Fig 5: Inspecting Light Control Rheostat
      G03367971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step   16 . 
    2. OK: Go to next step. 
  10. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY (POWER SOURCE CIRCUIT) 
    1. Disconnect 1C connector of the instrument panel junction block assy.
    2. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1C-1 - Body ground Always 10 to 14 V
      Fig 6: Inspecting Instrument Panel Junction Block Assy (Power Source Circuit)
      G03367972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSY - BATTERY) (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: Go to next step. 
  11. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1M-4 - Body ground Always 10 to 14 V
      Fig 7: Inspecting Instrument Panel Junction Block Assy (Always)
      G03367973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    2. OK: Go to next step. 
  12. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1M-9 - Body ground Light control switch OFF Below 1 V
      1M-9 - Body ground Light control switch in TAIL or HEAD position 10 to 14 V
      Fig 8: Inspecting Instrument Panel Junction Block Assy (Light Control Switch Off)
      G03367974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: Go to next step. 
  13. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1F-10 - Body ground Light control switch OFF --> TAIL or HEAD Below 1 V --> 10 to 14 V
      1J-2 - Body ground Light control switch OFF --> TAIL or HEAD Below 1 V --> 10 to 14 V
      1N-5 - Body ground Light control switch OFF --> TAIL or HEAD Below 1 V --> 10 to 14 V
      1R-9 - Body ground Light control switch OFF --> TAIL or HEAD Below 1 V --> 10 to 14 V
      Fig 9: Inspecting Instrument Panel Junction Block Assy (1P ,1R ,1J ,1N)
      G03367975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    2. OK: Go to next step. 
  14. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Disconnect 1F, 1J, 1N, 1R connector of the instrument panel junction block assy.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1R-7 - 1F-11 Always Below 1 Ω
      1R-7 - 1J-6 Always Below 1 Ω
      1R-7 - 1N-2 Always Below 1 Ω
      Fig 10: Inspecting Instrument Panel Junction Block Assy (1R ,1J ,1F ,1N)
      G03367976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    2. OK: Go to next step. 
  15. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSY - LIGHT CONTROL RHEOSTAT) 
    1. Disconnect 1R connector of the instrument panel junction block assy and light control rheostat connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1R-7 - R6-6 Always Below 1 Ω
      1R-7 - Body ground Always 10 kΩ or higher
      Fig 11: Checking Harness And Connector (Instrument Panel Junction Block Assy - Light Control Rheostat)
      G03367977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSY - LIGHT CONTROL RHEOSTAT) 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (EACH OF ILLUMINATION CIRCUIT) (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
  16. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSY - BODY GROUND) 
    1. Disconnect 1O connector of the instrument panel junction block assy.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1O-2 - Body ground Always Below 1 Ω
      Fig 12: Checking Harness And ConnectoR (Instrument Panel Junction Block Assy - Body Ground)
      G03367978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: Go to next step. 
  17. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    1. Disconnect 1P connector of the instrument panel junction block assy.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester connection Condition Specified condition
      1P-14 - Body ground Always Below 1 Ω
      Fig 13: Inspecting Instrument Panel Junction Block Assy (1P)
      G03367979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY 
    2. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSY - LIGHT CONTROL RHEOSTAT) (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
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