Special Functions

This mode performs functional tests on ABS/TCS system which help to verify proper operation. In this mode, testing and observing the test results can further identify malfunction conditions. Under this test, the following tests are available:

• Automated Test
  
  This test cycles each solenoid valve and pump motor to check component operation. This is identical to self-test that is performed when ignition switch is turned to RUN position. A DTC will set if malfunction is detected.
• Automated Bleed
  
  Used to bleed ABS hydraulics.
• Solenoid Test
  
  This test activates selected solenoid valves, commanding solenoid on and off.
• Normal Mode Eavesdrop
  
  Monitors serial data messages that relate to system operation. Normal mode eavesdrop is a list of data parameters. Normal mode eavesdrop function has 2 modes:

  • Phase 1-4
    
    The term phase refers to ignition switch changing states. Data parameters shown will display a value only when there is a change in ignition state. Otherwise, scan tool displays all asterisks next to each parameter.
  • No Phase
    
    Data parameters shown are not affected by changing of ignition states. Scan tool will display a value only when there is a serial data message that relates to the individual parameter. Otherwise, scan tool displays all asterisks next to each parameter.
• Pump Motor Test
  
  This test turns pump motor on and off.
• Steering Wheel Position Sensor Test
  
  This test monitors the analog and digital steering angle position and can only be run after the Steering Wheel Position Sensor has been centered.
• TCS On/Off Test
  
  This test commands traction control system on and off. Performs same function as traction control switch.
• TCS Test
  
  Runs pump motor in order to apply fluid pressure to front wheel circuits.