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Home >> Toyota >> 2008 >> Camry Base, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting (Except Hybrid) >> Lighting System >> Ignition Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. READ VALUE OF TECHSTREAM 
    1. Connect Techstream to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Turn Techstream on.
    4. Select the following menu items: Body Electrical / Main Body / Data List.
    5. Read the display on Techstream.

      Main Body: 

      DATA LIST REFERENCE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ACC SW Ignition switch or engine switch ACC signal / ON or OFF ON: Ignition switch on (IG or ACC)
      OFF: Ignition switch off      		 -
      IG SW Ignition switch or engine switch IG signal / ON or OFF ON: Ignition switch on (IG)
      OFF: Ignition switch off      		 -

      OK: 

      Normal conditions listed above are displayed. 

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

    NG: Go to next step 

  2. INSPECT ACC RELAY 
    1. Remove the ACC relay from the instrument panel J/B assembly.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      Below 1 Ω (When battery voltage is applied to terminals 1 and 2)
      3. Fig 1: Identifying ACC Relay Of Instrument Panel J/B Assembly
      G05560333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE ACC RELAY 

    OK: Go to next step 

  3. INSPECT NO. 1 IGNITION RELAY 
    1. Remove the No. 1 ignition relay from the instrument panel J/B assembly.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      Below 1 Ω (When battery voltage is applied to terminals 1 and 2)
      3. Fig 2: Identifying No. 1 Ignition Relay Of Instrument Panel J/B Assembly
      G05560333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE NO. 1 IGNITION RELAY 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BATTERY AND GROUND) 
    1. Disconnect the IA instrument panel J/B assembly connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      IA-1 - Body ground Always 10 to 14 V
      Fig 3: Identifying IA Instrument Panel J/B Assembly Connector Terminals
      G04980070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the IF instrument panel J/B assembly connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      IF-10 - Body ground Always Below 1 Ω
      5. Fig 4: Identifying IF Instrument Panel J/B Assembly Connector Terminal
      G04980071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK VEHICLE CONDITION 
    1. Check the vehicle condition.

      Result 

      RESULT REFERENCE

      Condition Proceed to
      Without Smart Key System A
      With Smart Key System B

    B:  Go to step  8

    A: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - IGNITION SWITCH) 
    1. Disconnect the E23 ignition switch connector.
    2. Disconnect the II instrument panel J/B assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      II-3 - E23-2 (ACC) Always Below 1 Ω
      II-4 - E23-4 (AM1) Always Below 1 Ω
      II-9 - E23-1 (IG1) Always Below 1 Ω
      II-3 - Body ground Always 10 kΩ or higher
      II-4 - Body ground Always 10 kΩ or higher
      II-9 - Body ground Always 10 kΩ or higher
      4. Fig 5: Checking Harness And Connector (Instrument Panel J/B Assembly - Ignition Switch)
      G04980072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. INSPECT IGNITION SWITCH 
    1. Inspect the ignition switch (See ON-VEHICLE INSPECTION )

      OK: 

      Ignition switch is normal. 

    NG: REPLACE IGNITION SWITCH 

    OK: REPLACE INSTRUMENT PANEL J/B ASSEMBLY 

  8. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU) 
    1. Disconnect the E7 main body ECU connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      E7-6 (AM1) - Body ground Always 10 to 14 V
      3. Fig 6: Identifying E7 Main Body ECU Connector Terminal
      G04980073Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  9. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - MAIN BODY ECU) 
    1. Disconnect the E7 main body ECU connector.
    2. Disconnect the II instrument panel J/B assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      II-3 - E7-22 (ACCD) Always Below 1 Ω
      II-9 - E7-3 (IG1D) Always Below 1 Ω
      II-3 - Body ground Always 10 kΩ or higher
      II-9 - Body ground Always 10 kΩ or higher
      4. Fig 7: Identifying E7 Main Body ECU Connector Terminal And II Instrument Panel J/B Assembly Connector Terminal
      G05560339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  10. CHECK HARNESS AND CONNECTOR (ENGINE SWITCH - MAIN BODY ECU AND BODY GROUND) 
    1. Disconnect the E52 engine switch connector.
    2. Disconnect the E7 main body ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      E52-7 (SS1) - E7-17 (SSW1) Always Below 1 Ω
      E52-2 (SS2) - E7-16 (SSW2) Always Below 1 Ω
      E52-5 (GND) - Body ground Always 10 kΩ or higher
      E52-4 (COM) - Body ground Always 10 kΩ or higher
      4. Fig 8: Identifying E52 Engine Switch Connector Terminal And E7 Main Body ECU Connector Terminal
      G05560340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  11. INSPECT ENGINE SWITCH 
    1. Inspect the engine switch (See INSPECTION ).

      OK: 

      Engine switch is normal. 

    NG: REPLACE ENGINE SWITCH 

    OK: REPLACE INSTRUMENT PANEL J/B ASSEMBLY 

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