Impreza WRX F4-2.0L DOHC Turbo (2004)
Electronic Brake Control Module: Service and Repair
ABS Control Module and Hydraulic Control Unit (ABSCM&H/U)
REMOVAL
1) Disconnect the ground terminal from battery.
2) Remove the air intake duct from engine compartment to facilitate removal of ABSCM&H/U.
3) Use an air gun to get rid of water around the ABSCM&H/U.
CAUTION: The contact will be insufficient if the terminal gets wet.
4) Pull off the lock of the ABSCM&H/U connector to remove it.
5) Disconnect the connector from ABSCM&H/U.
CAUTION: Be careful not to let water or other foreign matter contact the ABSCM&H/U terminal.
6) Unlock the cable clip.
7) Disconnect the brake pipes from ABSCM&H/U.
CAUTION: Wrap the brake pipes with vinyl bag to avoid spilling brake fluid on vehicle body.
8) Remove the ABSCM&H/U from engine compartment.
CAUTION:
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ABSCM&H/U cannot be disassembled. Do not attempt to loosen the bolts and nuts.
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Do not drop or bump the ABSCM&H/U.
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Do not turn the ABSCM&H/U upside down or place it on its side.
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Be careful to prevent foreign particles from getting into the ABSCM&H/U.
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Apply a coat of grease (Nippeco LT or GB) to bracket attaching bolt after tightening.
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Do not pull the harness when disconnecting connector.
INSTALLATION
1) Install the ABSCM&H/U bracket.
Tightening torque: 33 Nm (3.3 kgf-m, 24 ft. lbs.)
2) Install the ABSCM&H/U.
CAUTION: Confirm that the specifications of the ABSCM&H/U conforms to the vehicle specifications.
