TEST ACTION APPLICABILITY
9 Turn the ignition off.
Remove the CAB harness strain relief to access wires.
Reconnect the CAB harness connector.
Turn the ignition on.
Measure the voltage between affected Wheel Speed Sensor 12 Volt Supply circuit and
ground.
Is the voltage above 10 volts?
All
Yes → Go To 10
No → Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
10 Turn the ignition off.
Remove the CAB harness strain relief to access wires.
Reconnect the CAB harness connector.
Turn the ignition on.
Measure the voltage between affected Wheel Speed Sensor 12 Volt Supply circuit and
affected Wheel Speed Sensor Signal circuit.
Is the voltage above 10 volts?
All
Yes → Go To 11
No → Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
11 Turn the ignition off.
Reconnect ALL affected Wheel Speed Sensor circuit connectors.
Disconnect the affected Wheel Speed Sensor connector.
Turn the ignition on.
Measure the voltage of the affected Wheel Speed Sensor 12 Volt Supply circuit in the
affected Wheel Speed Sensor connector while reconnecting the sensor connector.
Did the affected Wheel Speed Sensor 12 Volt Supply circuit drop voltage to 0 DC
volts?
All
Yes → Replace the affected Wheel Speed Sensor in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No → Go To 12
12 Turn the ignition off.
Reconnect ALL affected Wheel Speed Sensor circuit connectors.
Turn the ignition on.
Measure the DC voltage of the Wheel Speed Sensor Signal circuit in the affected
Wheel Speed Sensor connector.
Slowly rotate the wheel.
Does the DC voltage toggle between 1.6 volts to .8 volts?
All
Yes → Go To 13
No → Replace the affected Wheel Speed Sensor in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
19
BRAKES (CAB)
LEFT FRONT SENSOR CIRCUIT FAILURE — Continued
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