IPA Tools 9005A Super MUTT Head User Manual

Page 27

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

PLC

Select

Occurs only when vehicle is stationary