Antilock Brakes / Traction Control Systems

• Testing and Inspection
  • Reading and Clearing Diagnostic Trouble Codes
  • Diagnostic Trouble Code Descriptions
  • Diagnostic Trouble Code Tests and Associated Procedures
    • Manufacturer Code Charts
      • 0
      • 1 - Antilock Light Flashes 1 Time
      • 2 - Yellow Antilock Lamp Flashes 2 Times
        • 2A - Open RABS Valve Isolation Solenoid Wiring or Module
        • 2B - Check For Open RABS Valve Isolation Solenoid or Wiring
      • 3 - Yellow Antilock Lamp Flashes 3 Times
        • 3A - Open RABS Valve Dump Solenoid Wiring or Computer Module
        • 3B - Check For Open RABS Valve Dump Solenoid or Wiring
      • 4 - Yellow Antilock Lamp Flashes 4 Times
        • 4A - Check For Closed RABS Valve Switch
        • 4B - Check Resistance Between Valve Switch and Valve Ground
        • 4C - Check For Hydraulic Leak In Dump Section of Valve
        • 4D - Check For Open RABS Valve Ground Wire
        • 4E - Resistance In RABS Valve Wiring From the Module Connector
      • 5 - Yellow Antilock Lamp Flashes 5 Times
        • 5A
        • 5B - Check For Mechanical Problems In Rear Brake System
        • 5C - Check For Signal From 4WD Switch to Computer
      • 6 - Yellow Antilock Lamp Flashes 6 Times
        • 6A - Check For Erratic Sensor Signal & Loose Wire Connections
        • 6B - Check For Metal Chips On Sensor Magnet Pole Piece
        • 6C - Check For Exciter Ring Damage
        • 6D - Check For Erratic or Low Sensor Output On Computer Module
      • 7 - Yellow Antilock Lamp Flashes 7 Times
        • 7A - RABS Valve Isolation Solenoid or Wiring Shorted to Ground
        • 7B - Check For Blown Internal Fuse In the Module
      • 8 - Yellow Antilock Lamp Flashes 8 Times
        • 8A - Check Computer Module
        • 8A - Check For RABS Valve Solenoid or Wiring Shorted to Ground
      • 9 - Yellow Antilock Lamp Flashes 9 Times
        • 9A - Check For Open Sensor or Sensor Wiring
        • 9B - Check For Open Sensor Harness Wiring
      • 10 - Yellow Antilock Lamp Flashes 10 Times
        • 10A - Check For Shorted Sensor
        • 10B - Check For Grounded Sensor Wiring
        • 10C - Check For Shorted Sensor Wiring
      • 11 - Yellow Antilock Lamp Flashes 11 Times
        • 11A - Check Vehicle Stop Lights
        • 11B - Wiring From Module to Brake Switch
      • 12 - Yellow Antilock Lamp Flashes 12 Times
      • 13 - Yellow Antilock Lamp Flashes 13 Times
      • 14 - Yellow Antilock Lamp Flashes 14 Times
      • 15 - Yellow Antilock Lamp Flashes 15 Times
      • 16 - Yellow Antilock Lamp Flashes 16 Times
    • Rear Antilock Brakes (RABS)
  • Pinpoint Tests
    • Test A Yellow Antilock Light Off, Does Not Self-Check
      • A1 Module Harness Connector
      • A2 Computer Module Ground
      • A3 Antilock Light Power
      • A4 RABS 15 Amp Light Fuse
      • A5 Power to RABS Light Fuse
      • A6 RABS Light Bulb
    • Test B Brake Light On, Antilock Light Off, No Self-Check
      • B1 Parking Brake
      • B2 Parking Brake Switch
      • B3 B3 Module and Wiring
    • Test C Antilock Light On, Brake Light On
      • C1 Low Brake Fluid
      • C2 Master Cylinder Float
      • C3 Diode/Resistor Element
      • C4 Diode/Resistor Element Cont.
      • C5 Antilock Valve Switch
      • C6 Master Cylinder Switch
      • C7 Brake Light Wiring
    • Test D Antilock Light On, Brake Light Off
      • D1 Obtain the Flashout DTC
      • D2 Master Cylinder Connector
      • D3 RABS 20 Amp Fuse
      • D4 Shorts In Module Harness Connector Wiring
      • D5 Power to the Module
      • D6 Voltage at the Fluid Level Circuit
      • D7 Fluid Level Sensor and Wiring
      • D8 Grounded Diagnostic Lead
      • D9 Computer Module
    • Test E Antilock Light Flashing, Brake Light Off
      • E1 Intermittent Power to Module
      • E2 Grounded Diagnostic Lead
      • E3 Faulty Module Ground
    • Test F RR Wheels Lock W/Hard Stops, Lamps Function Properly
      • F1 Stoplamps
      • F2 Vehicle Road Test
      • F3 Wiring From Module to Brake Switch
      • F4 Exciter Ring Inspection
      • F5 Sensor Output
      • F6 Sensor Gap
      • F7 Mechanical Problems In Rear Brakes
      • F8 Computer Module
    • Test G Antilock Light Self Checks, Red Brake Light Does Not
      • G1 Master Cylinder Connector
      • G2 Red Brake Warning Light
• Technical Service Bulletins