LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2004 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 457 (Cruise Control System - Diagnostics) >> Cruise Control Switch Circuit >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT CRUISE CONTROL MAIN SWITCH 
    1. Disconnect the cruise control main switch connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      CRUISE CONTROL MAIN SWITCH TERMINALS RESISTANCE

      Switch condition Tester connection ResistanceΩ)
      Neutral 1 - 3 infiniti (No continuity)
      +/RES 1 - 3 210 to 270
      -/SET 1 - 3 560 to 700
      CANCEL 1 - 3 1,380 to 1,700
      Main Switch OFF 1 - 3 10 kΩ or higher
      Main Switch ON 1 - 3 1 Ω or less
      Fig 1: Identifying Cruise Control Main Switch Connector
      G03007834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE CRUISE CONTROL MAIN SWITCH (See  CRUISE CONTROL MAIN SWITCH  ) 
    2. OK: GO TO NEXT STEP. 
  2. CHECK AND REPLACE HARNESS OR CONNECTOR 
    1. Disconnect the main switch side connector and spiral cable side connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      MAIN SWITCH SIDE CONNECTOR AND SPIRAL CABLE SIDE CONNECTOR TERMINALS RESISTANCE

      Tester condition Condition Specification
      Main switch side 1 - Spiral cable side 3 All ways 1 Ω or less
      Main switch side 3 - Spiral cable side 4 All ways 1 Ω or less
      3. Fig 2: Identifying Main Switch Side Connector And Spiral Cable Side Connector
      G03007835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard: 

      MAIN SWITCH CONNECTOR TERMINALS RESISTANCE

      Tester condition Condition Specification
      Main switch side 1 - Body ground Always 10 kΩ or higher
      Main switch side 3 - Body ground Always 10 kΩ or higher
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  3. INSPECT SPIRAL CABLE SUB-ASSY 
    1. Disconnect the spiral cable connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      SPIRAL CABLE CONNECTOR TERMINALS RESISTANCE

      Tester connection Specification
      Switch side 3 to ECM side 1 1 Ω or less
      Switch side 4 to ECM side 2 1 Ω or less
      Fig 3: Identifying Spiral Cable Connector Terminals
      G03007836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE SPIRAL CABLE SUB-ASSY (See  SPIRAL CABLE SUB-ASSY  ) 
    2. OK: GO TO NEXT STEP. 
  4. CHECK AND REPLACE HARNESS OR CONNECTOR 
    1. Disconnect the spiral cable connector and ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      SPIRAL CABLE CONNECTOR AND ECM CONNECTOR TERMINALS RESISTANCE

      Tester connection Condition Specification
      Spiral cable 1 - CCS (E6 - 24) Always 1 Ω or less
    3. Measure the resistance according to the value(s) in the table below.

      Standard: 

      SPIRAL CABLE CONNECTOR AND ECM CONNECTOR TERMINALS RESISTANCE

      Tester connection Condition Specification
      CCS (E6 - 24) - Body ground Always 10 kΩ or higher
      Spiral cable 2 - Body ground Always 10 kΩ or higher
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: GO TO NEXT STEP. 
  5. INSPECT ECM 
    1. Remove the ECM with connector.
    2. Turn the ignition switch to the ON position.
    3. Measure the voltage according to the value(s) in the table below.

      Standard: 

      ECM CONNECTOR TERMINALS VOLTAGE

      Switch position Tester condition Specification
      Neutral CCS (E6-24) - Body ground 10 to 14 V
      CANCEL CCS (E6-24) - Body ground 6.6 to 10 V
      -/SET CCS (E6-24) - Body ground 4.5 to 7.1 V
      +/RES CCS (E6-24) - Body ground 2.3 to 4 V
      Main switch ON CCS (E6-24) - Body ground 1 V or less
      Fig 4: Identifying ECM Connector Terminal (CCS)
      G03007837Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE ECM (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 
scientia non olet · About LEMON Manuals