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DTC 41 ABS CONTROL MODULE MALFUNCTION

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 Ω?

Yes


No

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?

Yes

Repair the connector.


No


CHECK SOURCES OF SIGNAL NOISE.

Is the car telephone or wireless transmitter properly installed?

Yes


No

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?

Yes

Install the noise sources apart from sensor harness.


No


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?

Yes

Replace the ABSCM&H/U.


No


CHECK ANY OTHER DTC APPEARANCE.

Are other DTCs being output?

Yes

Proceed with the diagnosis corresponding to DTC.


No

A temporary poor contact.