2003 Acura 3.2TL BaseFACTORY OEM SERVICE PROCEDURE

DTC 64: Sensor Power Source

  1. Disconnect VSA control unit connector B (16P), steering angle sensor 5P connector, yaw rate sensor 4P connector, lateral acceleration sensor 3P connector, and VSA-TCS control valve sensor 3P connector.
  2. Turn the ignition switch ON (II).
  3. Measure the voltage between VSA control unit connector B (16P) terminal No. 7 and body ground.
    Fig 1: Measuring Voltage Between VSA Control Unit Connector B (16P) Terminal No. 7 & Body Ground
    G01156368Courtesy of AMERICAN HONDA MOTOR CO., INC.
    1. Is there about 1 V or more? 
    2. YES  - Repair short to power in the wire between the VSA control unit, steering angle sensor, yaw rate sensor, lateral acceleration sensor, and VSA-TCS control valve sensor.
    3. NO  - Go to step 4.
  4. Check for continuity between VSA control unit connector B (16P) terminal No. 7 and body ground.
    Fig 2: Checking Continuity Between VSA Control Unit Connector B (16P) Terminal No. 7 & Body Ground
    G01156369Courtesy of AMERICAN HONDA MOTOR CO., INC.
    1. Is there continuity? 
    2. YES  - Repair short to body ground in the wire between the VSA control unit, steering angle sensor, yaw rate sensor, lateral acceleration sensor, and VSA-TCS control valve sensor.
    3. NO  - Go to step 5.
  5. Turn the ignition switch OFF.
  6. Connect VSA control unit connector B (16P).
  7. Turn the ignition switch ON (II).
  8. Measure the voltage between VSA control unit connector B (16P) terminal No. 7 and body ground.
    Fig 3: Measuring Voltage Between VSA Control Unit Connector B (16P) Terminal No. 7 & Body Ground
    G01156370Courtesy of AMERICAN HONDA MOTOR CO., INC.
    1. Is there about 5 V? 
    2. YES  - Go to step 9.
    3. NO  - Check for loose VSA control unit connectors. If necessary, substitute a known-good VSA control unit, and recheck.
  9. Measure the voltage between the lateral acceleration sensor 3P connector terminal No. 1 and body ground.
    Fig 4: Measuring Voltage Between Lateral Acceleration Sensor 3P Connector Terminal No. 1 & Body Ground
    G01156371Courtesy of AMERICAN HONDA MOTOR CO., INC.
    1. Is there about 5 V? 
    2. YES  - Go to step 10.
    3. NO  - Repair open in the wire between the VSA control unit and the lateral acceleration sensor.
  10. Turn the ignition switch OFF.
  11. Check for continuity between the lateral acceleration sensor 3P connector terminal No. 3 and body ground.
    Fig 5: Check Continuity Between Lateral Acceleration Sensor 3P Connector Terminal No. 3 & Body Ground
    G01156372Courtesy of AMERICAN HONDA MOTOR CO., INC.
    1. Is there continuity? 
    2. YES  - The system is OK at this time. If the problem recurs, check for loose VSA control unit connectors. If necessary, substitute a known-good VSA control unit, and recheck.
    3. NO  - Repair open in the wire between the VSA control unit and the lateral acceleration sensor.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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