IPA Tools 9005A Super MUTT Head User Manual

Page 26

Red channel speed sensor S1A has low

sensor output
Red channel speed sensor S1B has low

sensor output.
Blue channel speed sensor S2A has low

sensor output.
Yellow channel speed sensor S2B has low

sensor output.
Blue channel speed sensor S3A has low

sensor output.
Yellow channel speed sensor S3B gap too

large. Gap should be kept to a minimum.

Sensor or spring clip is worn or

not properly adjusted, wiring

open or short circuit, wheel

bearing not properly adjusted

(these faults will only occur at

speeds of greater than 6 mph).

Measure the AC voltage at the

sensor in question while rotating

the wheel at a rate of about one

revolution every two seconds.

The output should be at least 200

millivolts (0.2 VAC). If this is not

the case, push in the sensor until

it touches the exciter and rotate

the wheel again. If this doesn’t

correct the problem, then the

sensor and the sensor block clip

should be replaced.
If sensor extensions are used

verify exension continuity and

connections. Replace sensor and/

or sensor cable.
Inspect exciter teeth for minor

damage or teeth filled with

debris.
Verify all exciters have the same

number of teeth.
Verify sensor and valve wiring/

plumbing is correct.
See side by side axle by axle

configurations.

Fault

Code

Explanation

Possible Causes

PLC

Select

PLC

Select