Antilock Brake System

DTC 41 ABS CONTROL MODULE MALFUNCTION
DIAGNOSIS:
Faulty ABSCM&H/U

TROUBLE SYMPTOM:
^ ABS does not operate.
^ EBD does not operate.

Note: In addition to the ABS warning light, brake warning light illuminates.

WIRING DIAGRAM:





CHECK GROUND CIRCUIT OF ABSCM&H/U.
Turn the ignition switch to OFF.
Disconnect the connector from ABSCM& H/U.
Measure the resistance between ABSCM&H/U and chassis ground.
Connector & terminal
(B301) No. 15 - Chassis ground:
Is the resistance less than 0.5 Ohms?
Repair the ABSCM&H/U ground harness.

CHECK POOR CONTACT IN CONNECTORS.
Is there poor contact in connectors between battery, ignition switch and ABSCM&H/U?
Repair the connector.

CHECK SOURCES OF SIGNAL NOISE.
Is the car telephone or wireless transmitter properly installed?
Properly install the car telephone or wireless transmitter.

CHECK SOURCES OF SIGNAL NOISE.
Are noise sources (such as an antenna) installed near the sensor harness?
Install the noise sources apart from sensor harness.

CHECK ABSCM&H/U.
Turn the ignition switch to OFF.
Connect all connectors.
Erase the memory.
Perform the inspection mode.
Read out the DTC.
Is the same DTC as in current diagnosis still being output?
Replace the ABSCM&H/U.

CHECK ANY OTHER DTC APPEARANCE.
Are other DTCs being output?
Proceed with the diagnosis corresponding to DTC.
A temporary poor contact.