TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Disconnect the Anti-Lock Brake module harness connector.
Connect a voltmeter to the Wheel Speed Sensor (+) and (-) circuits at the Antilock
Brake module harness connector.
Rotate the wheel at a speed of at least one revolution per second while monitoring the
voltage.
Is the AC voltage fluctuating above 120 mV?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the affected Wheel Speed Sensor in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
8
Turn the ignition off.
Visually inspect the related wiring harness.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out, or corroded terminals.
Look for any wiring conditions that may cause electromagnetic interference with the
Wheel Speed Sensor circuits.
Inspect Wheel Speed sensors, Tone Wheels, Brake Rotors, Wheel Bearings, etc, for
conditions that may cause speed variations from wheel to wheel.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Test Complete.
48
BRAKES (CAB)
LEFT FRONT WHEEL SPEED SENSOR SIGNAL —
Continued