LL5 Recheck Front Left Speed Sensor Output

- Place in 4x4 low mode. Start engine and allow wheels to spin and stabilize at engine idle speed.

- Set the meter to the frequency counter (Hz) setting. Measure and record the frequency between the two pins of the sensor component connector.

NOTE: Measurements of both the frequency and the voltage output must be taken. The actual speed the wheels are turning is not important -- the result of voltage output divided by the frequency will not change with wheel speed. However, it is crucial that both the frequency measurement and the voltage measurement be taken at the same wheel speed.

- Change the meter to the A/C mV setting. Measure and record the voltage output between the two pins of the sensor component connector.

- Determine the sensor output in mV/Hz: Output -- A/C Voltage/Frequency

- Is sensor output greater than 5.8 mV/Hz?

YES -- Output is now OK. Concern is most likely resolved. A drive test is recommended to verify sensor output is OK for customer driving conditions.

NO -- Verify tone ring is pressed straight and fully onto the rotor hub. Correct as needed. Repeat LL5. If no resolution, replace speed sensor. Do not leave this test until output is OK.