Vehicle make/model = 1997 pontiac/grand prix
Mileage = 138922
Engine size = 3.8
dash lights = abs ,check tire press and trac off
codes = c1242 rear esb will not hold motor
tech = jk
question = what is rear esb and how do i fix it
JK:
ESB stands for 'expansion spring brake' and it is internal to the abs modulator assembly.
This code is because the piston is slipping in the abs assembly. A common cause for this is
that the motor gear nut has loosened up, and the gear is slipping, therefore not holding the
ESB. The cover underneith the motor pack can be removed, and the nuts on the 3 gears
checked to see if one is loose. It is also possible that the EBCM (electronic brake control
module) is faulty. What needs to be done is have the system hooked up to a scan tool tool
that can read data and control abs functions to watch voltage numbers and decide what is
at fault.
Back
Mileage = 138922
Engine size = 3.8
dash lights = abs ,check tire press and trac off
codes = c1242 rear esb will not hold motor
tech = jk
question = what is rear esb and how do i fix it
JK:
ESB stands for 'expansion spring brake' and it is internal to the abs modulator assembly.
This code is because the piston is slipping in the abs assembly. A common cause for this is
that the motor gear nut has loosened up, and the gear is slipping, therefore not holding the
ESB. The cover underneith the motor pack can be removed, and the nuts on the 3 gears
checked to see if one is loose. It is also possible that the EBCM (electronic brake control
module) is faulty. What needs to be done is have the system hooked up to a scan tool tool
that can read data and control abs functions to watch voltage numbers and decide what is
at fault.
Back
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