Fault Code Guide

J1587 Fault 136-003 Left Rear Wheel Sensor
MID SID FMI Problem Test Test Result Action
136 003 01 Incorrect sensor air gap
1. Adjust the sensor.
Check the AC voltage
across Pins 3 and 10 of
the green X3 ECU
connector (Circuits 377LR+
and 377LR–) while rotating
the left rear 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.
136 003 02
Intermittent open circuit or
incorrect sensor resistance
2. Measure the resistance
across Pins 3 and 10 of
the green X3 ECU
connector (Circuits 377LR–
and 377LR+).
Resistance
reading between
500 and 2000
ohms
Check for intermittent,
loose or poor connections
in Circuits 377LR+ and
377LR– 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 377LR+
and 377LR–). Repair as
necessary.
Resistance
reading below
500 or above
2000 ohms
Replace the wheel sensor.
136 003 05 Open circuit
4. Measure the resistance
across Pins 3 and 10 of
the green X3 ECU
connector (Circuits 377LR–
and 377LR+).
Resistance
reading between
500 and 2000
ohms
Check for intermittent,
loose or poor connections
in Circuits 377LR+ and
377LR– 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 5.
5. 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 377LR+
and 377LR–). Repair as
necessary.
Resistance
reading below
500 or above
2000 ohms
Replace the wheel sensor.
Table 6, J1587 Fault 136-003 Left Rear Wheel Sensor
Meritor WABCO Hydraulic Antilock Braking System (ABS) 42.26
Troubleshooting
Business Class M2 Workshop Manual, Supplement 4, March 2003 300/13