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Antilock Braking System (ABS)

Antilock Telltale Circuit Open Or Grounded:




Circuit Diagram:






ANTILOCK TELLTALE CIRCUIT OPEN OR GROUNDED
The antilock telltale should turn on for a bulb check when the ignition is turned to Run. Three seconds after the engine starts, if the ABS control module doesn't detect a fault, the telltale should turn off. The ABS control module turns the antilock telltale Off by providing a ground path for the antilock telltale circuit.

CODE PARAMETERS
Code 11 sets if:
^ The antilock telltale circuit is open or grounded.

DIAGNOSTIC AIDS
IMPORTANT: Since the antilock telltale works through a remote lamp driver in the I/P cluster, grounding the circuit from the cluster to the ABS control module would cause the telltale to turn Off. Opening the circuit will turn the telltale On.

Intermittents or opens suspected to be at the connectors can be detected by using a diagnostic service probe. Voltage can be read on wires without disconnecting any connectors.

When attempting to diagnose an intermittent problem, use the Scan tool (select Malfunction History from Scan tool ABS menu) to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem.

Check the tightness of the female terminal grip with a spare male terminal.

Code 11 will not set when a previous failure has already disabled ABS.