SPEED LIMITER SYSTEM Speed Limiter System does not Operate

DESCRIPTION

When the speed limiter is turned on using the speed limiter switch, the ECM illuminates the speed limiter indicator and activates the speed limiter system. Each function of the speed limiter system can be activated by operating the cruise control switch. When the cruise control system is operating, the speed limiter system will not operate.

WIRING DIAGRAM

A01TDKRE05
for 1NR-FE
*a Speed Limiter Switch
*b Steering Pad Switch Assembly
*c Spiral Cable Sub-assembly
A01TDKRE06
for 1ZR-FAE
*a Speed Limiter Switch
*b Steering Pad Switch Assembly
*c Spiral Cable Sub-assembly
A01T9GBE01
for 8NR-FTS
*a Speed Limiter Switch
*b ECCS
*c Steering Pad Switch Assembly
*d Spiral Cable Sub-assembly
A01TC8WE03
for 1ND-TV
*a Speed Limiter Switch
*b ECCS
*c Steering Pad Switch Assembly
*d Spiral Cable Sub-assembly
A01TC8WE02
for 1WW
*a Speed Limiter Switch
*b ECCS
*c Steering Pad Switch Assembly
*d Spiral Cable Sub-assembly

CAUTION / NOTICE / HINT

Note

Before replacing the ECM, refer to Service Bulletin.

PROCEDURE


  1. CHECK CRUISE CONTROL SYSTEM


    1. Turn the ignition switch ON.

    2. Turn the cruise control on using the cruise control switch.

    3. Check the operation of each function by operating the cruise control switch.

      except 1ND-TV, 8NR-FTS: Click here

      for 1ND-TV: Click here

      for 8NR-FTS: Click here

      OK
      Each function of the cruise control system operates normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO CRUISE CONTROL SYSTEM except 1ND-TV, 8NR-FTS: Click here
    GO TO CRUISE CONTROL SYSTEM for 1ND-TV: Click here
    GO TO CRUISE CONTROL SYSTEM for 8NR-FTS: Click here

    OK

  2. CHECK VEHICLE CONDITION


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      Other than 8NR-FTS A
      8NR-FTS B

    B

    READ VALUE USING GTS (ASL SWITCH) Click here

    A

  3. READ VALUE USING GTS (ASL MAIN SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus : Powertrain / Cruise Control / Data List / ASL Main Switch.

    5. for 1NR-FE, 1ZR-FAE, 1ND-TV:

      According to the display on the GTS, read the Data List.


      Powertrain > Cruise Control > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ASL Main Switch Speed limiter switch signal ON or OFF

      ON: Speed limiter switch on

      OFF: Speed limiter switch off

      		 -

      Powertrain > Cruise Control > Data List
      Tester Display
      ASL Main Switch

    6. for 1WW:

      According to the display on the GTS, read the Data List.


      Powertrain > Engine and ECT > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ASL Main SW Speed limiter switch signal ON or OFF

      ON: Speed limiter switch on

      OFF: Speed limiter switch off

      		 -

      Powertrain > Engine and ECT > Data List
      Tester Display
      ASL Main SW
      OK
      The GTS display changes according to switch operation.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM for 1NR-FE: Click here
    REPLACE ECM for 1ZR-FAE: Click here
    REPLACE ECM for 1ND-TV: Click here
    REPLACE ECM for 1WW: Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM)


    1. Disconnect the ECM connector.

    2. Disconnect the spiral cable sub-assembly connector.

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

      Standard Resistance
      for 1NR-FE
      Tester Connection Condition Specified Condition
      A50-40 (ASLM) - E6-4 (ASL) Always Below 1 Ω
      A50-40 (ASLM) or E6-4 (ASL) - Body ground Always 10 kΩ or higher
      for 1ZR-FAE
      Tester Connection Condition Specified Condition
      A50-20 (ASLM) - E6-3 (ASL) Always Below 1 Ω
      A50-20 (ASLM) or E6-3 (ASL) - Body ground Always 10 kΩ or higher
      for 1ND-TV
      Tester Connection Condition Specified Condition
      A169-39 (ASLM) - E6-4 (ASL) Always Below 1 Ω
      A169-59 (ECCS) - E6-2 (ECC) Always Below 1 Ω
      A169-39 (ASLM) or E6-4 (ASL) - Body ground Always 10 kΩ or higher
      A169-59 (ECCS) or E6-2 (ECC) - Body ground Always 10 kΩ or higher
      for 1WW
      Tester Connection Condition Specified Condition
      A50-49 (ASLM) - E6-12 (ASL) Always Below 1 Ω
      A50-42 (ECCS) - E6-2 (ECC) Always Below 1 Ω
      A50-49 (ASLM) or E6-12 (ASL) - Body ground Always 10 kΩ or higher
      A50-42 (ECCS) or E6-2 (ECC) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (except 1ND-TV, 1WW) A
      OK (for 1ND-TV, 1WW) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E6-2 (ECC) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT SPIRAL CABLE SUB-ASSEMBLY


    1. Inspect the spiral cable sub-assembly.

      w/ VSC: Click here

      w/o VSC: Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY w/ VSC: Click here
    REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY w/o VSC: Click here

    OK

  7. INSPECT STEERING PAD SWITCH ASSEMBLY


    1. Inspect the steering pad switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM for 1NR-FE: Click here
    REPLACE ECM for 1ZR-FAE: Click here
    REPLACE ECM for 1ND-TV: Click here
    REPLACE ECM for 1WW: Click here
    REPLACE ECM for 8NR-FTS: Click here

    NG

    REPLACE STEERING PAD SWITCH Click here

  8. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)


    1. Disconnect the ECM connector.

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

      Standard Resistance
      for 1ND-TV
      Tester Connection Condition Specified Condition
      A169-4 (E1) - Body ground Always Below 1 Ω
      for 1WW
      Tester Connection Condition Specified Condition
      A50-4 (E1) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 6 Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. READ VALUE USING GTS (ASL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus : Powertrain / Cruise Control / Data List / ASL SW.

    5. According to the display on the GTS, read the Data List.


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ASL SW Speed limiter switch signal ON or OFF

      OFF: Speed limiter switch off

      ON: Speed limiter switch on

      		 -

      Powertrain > Engine > Data List
      Tester Display
      ASL SW
      OK
      The GTS display changes according to switch operation.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM for 8NR-FTS: Click here

    NG

  10. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM)


    1. Disconnect the ECM connector.

    2. Disconnect the spiral cable sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A173-22 (ASLM) - E6-4 (ASL) Always Below 1 Ω
      A173-41 (ECCS) - E6-2 (ECC) Always Below 1 Ω
      A173-22 (ASLM) or E6-4 (ASL) - Body ground Always 10 kΩ or higher
      A173-41 (ECCS) or E6-2 (ECC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND)


    1. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B208-53 (E1) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 6 Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR