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EDC16 / P0703 57

Read the instructions below then start the fault diagnostic procedure.

Symptom: Cruise control not working.

  P0703 57


Brake Light/Brake Pedal Switch Plausibility Error

Fault symptom

Cruise control not working.

On-board diagnosis

Type of diagnosis:

Continuous

Fault criteria:

Logistic fault between brake light switch and cruise control brake switch for more than 180 seconds.

System reaction to a fault:

Cruise control switched off.

OK report:

Fault criteria NOT fulfilled.

Checking the wiring harness

Faults in the control module female connector can be the cause of the DTC. Check the connector with respect to oxidation, depressed pins and pin clamping force.
Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:


Functions in the diagnostic tool related to the fault:

Test value:
Brake Pedal Switch
Brake Light Switch
(See also description of readings/activations in diagnostic tool)