FixVault

Anti-Lock Quick Check Sheet Using EEC-IV 60-Pin Breakout Box

ANTI-LOCK QUICK CHECK SHEET USING EEC-IV 60-PIN BREAKOUT BOX

Item to Be Tested Ignition Mode Measure Between Pin Numbers Tester Scale/Range Specification Pinpoint Test
Ignition Feed OFF 16 and Chassis DC Volts 0 V Go to PINPOINT TEST L .
  ON 16 and Chassis DC Volts 10 V min Go to PINPOINT TEST L .
LF Wheel Speed Sensor Resistance (4x2) OFF 4 and 12 ohms 1,700-3,600 ohms Go to PINPOINT TEST B .
RF Wheel Speed Sensor Resistance (4x2) OFF 5 and 13 ohms 1,700-3,600 ohms Go to PINPOINT TEST D .
LF Wheel Speed Sensor Resistance (4x4) OFF 4 and 12 ohms 650-800 ohms Go to PINPOINT TEST B .
RF Wheel Speed Sensor Resistance (4x4) OFF 5 and 13 ohms 650-800 ohms Go to PINPOINT TEST D .
Rear Axle Speed Sensor Resistance OFF 14 and 6 ohms 800-3,500 ohms Go to PINPOINT TEST F .
Wheel Speed Sensor Continuity to Ground 
LF OFF Chassis and 12 Continuity Continuity Go to PINPOINT TEST B .
RF OFF Chassis and 13 Continuity Continuity Go to PINPOINT TEST D .
Rear OFF Chassis and 14 Continuity Continuity Go to PINPOINT TEST F .
Wheel Speed Sensor Voltage: Rotate wheel @ one revolution per second 
LF OFF 4 and 12 AC mVolts 300-3,500 mV Go to PINPOINT TEST C .
RF OFF 5 and 13 AC mVolts 300-3,500 mV Go to PINPOINT TEST E .
Rear (Both at same time and direction) OFF 14 and 6 AC m Volts 300-3,500 mV Go to PINPOINT TEST G .
  1. Verify the customer concern by operating the vehicle and applying the brakes under different conditions to duplicate the condition.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Parking brake cable
    • Blown fuse
    • Tire pressure
    • Central junction box (CJB) fuse(s):
    • 25 (10A)
    • 602 (60A)
    • Tire size or mismatched tires
     
    • Connectors or connections
    • Ground integrity
    • Harness routing
    • Wire chafing
    • Circuitry open/shorted
  3. If the inspection reveals an obvious concern(s) that can be readily identified, repair as required.
  4. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
    • Verify that the battery voltage is between 10 and 16 volts. REFER to CHARGING SYSTEM - GENERAL INFORMATION .
  5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
  6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • SCP, UBP, CAN, or ISO; all electronic control units no response/not equipped, REFER to MODULE COMMUNICATIONS NETWORK .
    • No response/not equipped for the ABS module, Go to PINPOINT TEST L .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the ABS module.
  7. If the DTCs retrieved are related to the concern, refer to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX  to continue diagnosis.
  8. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART  to continue diagnosis.