DTC 94

ABS Schematic: Code 94:

BRAKE SWITCH CIRCUIT ALWAYS CLOSED
When the wheel speed sensors indicate to the ABS control module that the vehicle is under braking, the ABS control module should receive voltage from the brake switch. If voltage is present at vehicle start, arid the vehicle exceeds 40 km/h (25 mph), the code will be set, the service telltale will be On, and ABS or base braking will not be affected.

INFORMATION FLAG PARAMETERS
Information Flag 94 sets if:
^ Brake switch is always closed.
^ The vehicle should be driven at lease 40 km/h (25 mph) with the brake pedal released to check for reappearance of this failure.

When Code 94 sets:
^ The service telltale will be On.

Diagnostic Chart: Code 94:

DIAGNOSTIC AIDS
This code will only set if the brake switch is closed from vehicle start up until vehicle speed exceeds 40 km/h (25 mph) or information flag 94 failed last ignition cycle and no brake switch transition has occurred this ignition cycle.

When Attempting To Diagnose - an intermittent problem, use the scan tool to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem.

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.

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

Brake switch is normally open. Depressing brake pedal completes the circuit (closes switch).

Check brake switch adjustment. Refer to Lighting and Horns.