(d) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LIGHT SWITCH - ECM)
OK -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
Repair/Components
Up to 08/2009
CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: P0571: Brake Switch "A" Circuit
P0571 - Brake Switch "A" Circuit
DESCRIPTION
- When the brake pedal is depressed, the stop light switch sends a signal to the ECM. When the ECM receives this signal, it cancels the cruise
control. The fail-safe function operates to enable normal driving even if there is a malfunction in the stop light signal circuit. The cancellation
condition occurs when voltage is applied to terminal STP. When the brake is applied, voltage is normally applied to terminal STP of the ECM
through the STOP fuse and the stop light switch, and the ECM turns the cruise control off.
- The ECM receives the brake demand signal from the driving support ECU and transmits it to the skid control ECU. The skid control ECU
receives a signal from the ECM and operates the brake actuator. The skid control ECU operates the brake actuator and at the same time
illuminates the stop light by operating the stop light control relay.
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