IPA Tools 9005A Super MUTT Head - Manual (Page 27)

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Red channel wheel speed sensor S1A has an
erratic output voltage.
Red channel wheel speed sensor S1B has an
erratic output voltage.
Blue channel wheel speed sensor S2A has an
erratic output voltage.
Yellow channel wheel speed sensor S2B has
an erratic output voltage.
Blue channel wheel speed sensor S3A has an
erratic output voltage.
Yellow channel wheel speed sensor S3B has
an erratic output voltage.
Auxiliary channel 1 fault (digital channel 1)
output only
Auxiliary channel 2 fault (digital channel 2)
output only
Auxiliary channel 3 fault (digital channel 3)
output only
Auxiliary channel 4 fault (digital channel 4)
output only
Auxiliary channel 5 fault (digital channel 5)
output only
Loose sensor, connection, brack-
et or exciter, damaged exciter,
sensor is not properly adjusted
or has worn cable insulation, or
worn sensor block clip, wheel
bearing failure, wheel bearing
is not properly adjusted (these
faults will only occur at speeds
greater than 6 mph).
Measure the AC voltage at the
sensor in question while rotating
the wheel at a rate of abut one
rotation 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 should be replaced.
Verify the tire and wheel size is
large enough for 100 tooth ex-
citer ring. If these faults re-occur
at the same speed, inspect the
exciter ring for damage.
Smaller wheels and tires require
80 tooth exciter rings. Reference
Tire Scale Factor Chart.
Verify sensor and valve wiring/
plumbing is correct.
See side by side and axle by axle
configurations.
PLC Select 2M Plus (ABS
Auxiliary Codes)
Note:
These Codes are only used with
PLC Select 2M Plus ABS that
supports trailer Auxiliaries.
Auxiliary Channel has an open
circuit or the ECU (Electronic
Control Unit) has an auxiliary
device connected and is not
programmed to be.
Note: These codes do not affect
ABS performance and do not
illuminate the tractor trailer ABS
warning lamps.
Fault
Code
Explanation
Possible Causes
PLC
Select
1M
PLC
Select
2M
21
22
23
24
25
26
31
32
33
34
35
Occurs only when vehicle is stationary