Fault Code Guide

J1587 Fault 136-001 Left Front Wheel Sensor
MID SID FMI Problem Test Test Result Action
136 001 05 Open circuit
5. Measure the resistance
across Pins 5 and 8 of the
green X3 ECU connector
(Circuits 377LF– and
377LF+).
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 6.
6. 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.
Resistance
reading below
500 or above
2000 ohms
Replace the wheel sensor.
Table 4, J1587 Fault 136-001 Left Front Wheel Sensor
J1587 Fault 136-002 Right Front Wheel Sensor
MID SID FMI Problem Test Test Result Action
136 002 01 Incorrect sensor air gap
1. Adjust the sensor.
Check the AC voltage
across Pins 4 and 9 of the
green X3 ECU connector
(Circuits 377RF+ and
377RF–) while rotating the
right front wheel 30 rpm.
Voltage greater
than 0.2 VAC
Sensor adjustment solved
the problem. Clear the
stored faults and drive the
vehicle 4 mph (6 km/h).
Voltage less
than 0.2 VAC
Check for excessive wheel
bearing end play. Repair
as necessary.
Meritor WABCO Hydraulic Antilock Braking System (ABS) 42.26
Troubleshooting
Business Class M2 Workshop Manual, Supplement 4, March 2003 300/11