LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2015 >> Camry LE >> Repair and Diagnosis >> Electrical >> Gauges >> Meter / Gauge / Display (Diagnostic Codes & Symptom Tests) (Except Hybrid) >> Meter / Gauge System >> Symptom Tests >> Speed Signal Circuit [09/2014 - ] >> Procedure

Speed Signal Circuit [09/2014 - ]: Procedure

  1. INSPECT ECU TERMINAL VOLTAGE (INPUT VOLTAGE) 
    1. Disconnect the I18 combination meter assembly connector.
      GTY473217Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      w/o Multi-information Display 

      w/ Multi-information Display 

      Tester Connection Condition Specified Condition
      I18-9 (+S) - Body ground Ignition switch ON 6 to 14 V
      Tester Connection Condition Specified Condition
      I18-3 (+S) - Body ground Ignition switch ON 6 to 14 V
      TEXT IN ILLUSTRATION

      *A w/o Multi-information Display
      *B w/ Multi-information Display
      *a Front view of wire harness connector
      (to Combination Meter Assembly)

      HINT: 

      If any of the ECUs specified in the wiring diagram supplies power to the combination meter assembly, the combination meter assembly will output a waveform.

    NG → See step   5 

    OK: Go to next step 

  2. INSPECT COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE) 
    1. Reconnect the I18 combination meter assembly connector.
    2. Disconnect the A49*1 or A94*2 brake actuator assembly (skid control ECU) connector.
      • *1: for 2AR-FE (w/o Dynamic Radar Cruise Control System)
      • *2: for 2AR-FE (w/ Dynamic Radar Cruise Control System), 2GR-FE
      GTY482762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A49-2 (SP1)*1 - Body ground Ignition switch ON 11 to 14 V
      A94-2 (SP1)*2 - Body ground Ignition switch ON 11 to 14 V
      • *1: for 2AR-FE (w/o Dynamic Radar Cruise Control System)
      • *2: for 2AR-FE (w/ Dynamic Radar Cruise Control System), 2GR-FE
      TEXT IN ILLUSTRATION

      *A for 2AR-FE (w/o Dynamic Radar Cruise Control System)
      *B for 2AR-FE (w/ Dynamic Radar Cruise Control System), 2GR-FE
      *a Front view of wire harness connector
      [to Brake Actuator Assembly (Skid Control ECU)]

    NG → See step   4 

    OK: Go to next step 

  3. INSPECT BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) (INPUT WAVEFORM) 
    1. Check the input waveform.
      GTY472723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Reconnect the A49*1 or A94*2 brake actuator assembly (skid control ECU) connector.
        • *1: for 2AR-FE (w/o Dynamic Radar Cruise Control System)
        • *2: for 2AR-FE (w/ Dynamic Radar Cruise Control System), 2GR-FE
      2. Remove the combination meter assembly with the connector(s) still connected.
      3. Connect an oscilloscope to terminal I18-8 (SI)*3 or I18-4 (SI)*4 and body ground.
        • *3: w/o Multi-information Display
        • *4: w/ Multi-information Display
      4. Turn the ignition switch to ON.
      5. Turn the wheel slowly.
      6. Check the signal waveform according to the condition(s) in the table below.
        Item Condition
        Tool setting 5 V/DIV., 20 ms./DIV.
        Vehicle condition Wheel being rotated
        TEXT IN ILLUSTRATION

        *A w/o Multi-information Display
        *B w/ Multi-information Display
        *a Component with harness connected
        (Combination Meter Assembly)

        OK

        The waveform is similar to that shown in the illustration.

        HINT: 

        When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

    NG → See step   16 

    OK → See step   17 

  4. CHECK HARNESS AND CONNECTOR [COMBINATION METER ASSEMBLY - BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)] 
    1. Disconnect the I18 combination meter assembly connector.
    2. Disconnect the A49*1 or A94*2 brake actuator assembly (skid control ECU) connector.
      • *1: for 2AR-FE (w/o Dynamic Radar Cruise Control System)
      • *2: for 2AR-FE (w/ Dynamic Radar Cruise Control System), 2GR-FE
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      w/o Multi-information Display 

      w/ Multi-information Display 

      Tester Connection Condition Specified Condition
      A49-2 (SP1) - I18-8 (SI) Always Below 1 Ω
      A49-2 (SP1) - Body ground Always 10 kΩ or higher
      Tester Connection Condition Specified Condition
      A49-2 (SP1) - I18-4 (SI)*1 Always Below 1 Ω
      A49-2 (SP1) - Body ground*1 Always 10 kΩ or higher
      A94-2 (SP1) - I18-4 (SI)*2 Always Below 1 Ω
      A94-2 (SP1) - Body ground*2 Always 10 kΩ or higher
      • *1: for 2AR-FE (w/o Dynamic Radar Cruise Control System)
      • *2: for 2AR-FE (w/ Dynamic Radar Cruise Control System), 2GR-FE

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   17 

  5. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - JUNCTION CONNECTOR) 
    1. Disconnect the I124 junction connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      w/o Multi-information Display 

      w/ Multi-information Display 

      Tester Connection Condition Specified Condition
      I18-9 (+S) - I124-18 Always Below 1 Ω
      I18-9 (+S) - Body ground Always 10 kΩ or higher
      Tester Connection Condition Specified Condition
      I18-3 (+S) - I124-18 Always Below 1 Ω
      I18-3 (+S) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (JUNCTION CONNECTOR) 
    1. Inspect for a short in the circuit that is connected to the junction block connector shown in the wiring diagram.

      HINT: 

      If voltage is not present, it is possible that an ECU or circuit has a malfunction. The malfunctioning ECU or circuit will be diagnosed in the following steps.

      1. Disconnect the I124 junction connector.
      2. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Condition Specified Condition
        I124-21 - Body ground Ignition switch ON 6 to 14 V
        I124-19 - Body ground Ignition switch ON 6 to 14 V
        I124-17 - Body ground Ignition switch ON 6 to 14 V
        I124-20 - Body ground Ignition switch ON 6 to 14 V
        I124-16 - Body ground Ignition switch ON 6 to 14 V

        Result

        Result Proceed to
        Voltage is not present in one circuit. A
        Voltage is present in all the circuits. B

    B → REPLACE JUNCTION CONNECTOR (INSTRUMENT PANEL WIRE) 

    A: Go to next step 

  7. SYSTEM CHECK 
    1. Select the circuit for which voltage was not present in step 6.

      Result

      Tester Connection System that uses the circuit Proceed to
      I124-21 - Body ground Smart key system*1 A
      I124-19 - Body ground Audio and visual system*2 B
      I124-17 - Body ground Audio and visual system*4 or Navigation system*5 C
      I124-20 - Body ground Safety connect system*6 D
      I124-16 - Body ground SFI system E
      I124-16 - Body ground Automatic headlight beam level control system*3 E
      I124-16 - Body ground U660E automatic transaxle system E
      • *1: w/ Smart Key System
      • *2: for 10 Speakers
      • *3: w/ Automatic Headlight Beam Level Control System
      • *4: w/o Navigation System
      • *5: w/ Navigation System
      • *6: w/ Manual (SOS) Switch

    B → See step   9 

    C → See step   10 

    D → See step   11 

    E → See step   12 

    A: Go to next step 

  8. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) CIRCUIT) 
    1. Disconnect the I78 certification ECU (smart key ECU assembly) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I78-27 (SPD) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   18 

  9. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY CIRCUIT) 
    1. Disconnect the I69 stereo component amplifier assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I69-11 (SPD) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   20 

  10. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY CIRCUIT, NAVIGATION RECEIVER ASSEMBLY CIRCUIT) 
    1. Disconnect the I155 radio and display receiver assembly*1 or I8 navigation receiver assembly*2 connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I155-17 (SPD)*1 - Body ground Always 10 kΩ or higher
      I8-17 (SPD)*2 - Body ground Always 10 kΩ or higher
      • *1: w/o Navigation System
      • *2: w/ Navigation System

      Result

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

    B → See step   19 

    C → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    A → See step   24 

  11. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - COMBINATION METER ASSEMBLY) 
    1. Disconnect the I135 DCM (telematics transceiver) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I135-10 (SPDP) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   26 

  12. SYSTEM CHECK 
    1. Select the circuit for which voltage was not present in step 6.

      Result

      Tester Connection System that uses the circuit Proceed to
      I124-16 - Body ground SFI system A
      I124-16 - Body ground Automatic headlight beam level control system B
      I124-16 - Body ground U660E Automatic Transaxle system C

    B → See step   14 

    C → See step   15 

    A: Go to next step 

  13. CHECK HARNESS AND CONNECTOR (ECM CIRCUIT) 
    1. Disconnect the A25 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A25-57 (SPD)*1 - Body ground Always 10 kΩ or higher
      A25-10 (SPD)*2 - Body ground Always 10 kΩ or higher
      • *1: for 2AR-FE
      • *2: for 2GR-FE

      Result

      Result Proceed to
      OK (for 2AR-FE) A
      OK (for 2GR-FE) B
      NG C

    B → See step   25 

    C → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    A → See step   23 

  14. CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY CIRCUIT) 
    1. Disconnect the A34 headlight leveling ECU assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A34-16 (SPDR) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   21 

  15. CHECK HARNESS AND CONNECTOR (TCM CIRCUIT) 
    1. Disconnect the E7 TCM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E7-3 (SPD) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   22 

  16. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 
  17. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 
  18. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [09/2014 - ] 
  19. REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 
  20. REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 
  21. REPLACE HEADLIGHT LEVELING ECU ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 
  22. REPLACE TCM. Refer to  REMOVAL [09/2014 - ] 
  23. REPLACE ECM. Refer to  REMOVAL [09/2014 - ] 
  24. REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [09/2014 - ] 
  25. REPLACE ECM. Refer to  REMOVAL [09/2014 - ] 
  26. REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [09/2014 - ] 
scientia non olet · About LEMON Manuals