Fault Code Guide

J1587 Fault 136-001 Left Front Wheel Sensor
MID SID FMI Problem Test Test Result Action
136 001 02
Intermittent open circuit or
incorrect sensor resistance
NOTE: This SAE J1587
fault code can also be
caused by incorrect or
mixed tire size. Also see
test 4.
2. Measure the resistance
across Pins 5 and 8 of the
green X3 ECU connector
(Circuits 377LF– and 377
LF+).
Resistance
reading between
500 and 2000
ohms
Check for intermittent,
loose or poor connections
in Circuits 377LF+ and
377LF– and repair as
necessary. If the problem
persists, suspect the ECU
is at fault.
Resistance
reading below
500 or above
2000 ohms
Go to Test 3.
3. Disconnect the sensor at
the sensor connector.
Measure the resistance at
the sensor connector (on
the sensor side).
Resistance
reading between
500 and 2000
ohms
Check the wiring between
the ECU and the wheel
sensor (Circuits 377LF+
and 377LF–). Repair as
necessary. Go to Test 4.
Resistance
reading below
500 or above
2000 ohms
Replace the wheel sensor.
136 001 02
Incorrect or mixed tire size
NOTE: This SAE J1587
fault code can also be
caused by an intermittent
open circuit or incorrect
sensor resistance. Also,
see tests 2 and 3.
4. Check for tire size
deviation in excess of 16
percent. Mixed tire sizes
can cause this fault.
Correct tire size
and size
variation does
not exceed 16
percent
Perform Test 2 and Test 3
if not already done. If the
problem is not found,
verify the fault and check
the ECU.
Incorrect tire
size or size
variation
exceeds 16
percent
Install the correct size
tires.
Meritor WABCO Hydraulic Antilock Braking System (ABS) 42.26
Troubleshooting
Business Class M2 Workshop Manual, Supplement 4, March 2003300/10