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Symptom: P0580-SPEED CONTROL SWITCH #1 LOW When Monitored and Set Condition: P0580-SPEED CONTROL SWITCH #1 LOW When Monitored: With the ignition key on. Battery voltage above 10 volts. Set Condition: The PCM detects the Speed Control Switch Signal circuit voltage is less than 0.43. One Trip Fault. POSSIBLE CAUSES SPEED CONTROL SWITCH VOLTAGE LOW SPEED CONTROL ON/OFF SWITCH SPEED CONTROL RESUME/ACCEL SWITCH (V37) S/C SWITCH SIGNAL CIRCUIT SHORTED TO (K4) SENSOR GROUND (V37) S/C SWITCH SIGNAL CIRCUIT SHORTED TO GROUND PCM TEST ACTION APPLICABILITY 1 NOTE: Do not press any of the Speed Control Switch buttons. t, read the Speed Control voltage. Is the Speed Control voltage below 1.0 volt? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 2 Ignition on, engine not running. t, monitor the Speed Control Switch voltage. Disconnect the Speed Control On/Off Switch harness connector. All Yes → Replace the Speed Control On/Off Switch. Perform POWERTRAIN VERIFICATION TEST VER - 4 - NGC. No → Go To 3 3 Ignition on, engine not running. t, monitor the Speed Control Switch voltage. Disconnect the Speed Control Resume/Accel Switch harness connector. All Yes → Replace the Speed Control Resume/Accel Switch. Perform POWERTRAIN VERIFICATION TEST VER - 4 - NGC. No → Go To 4 222 DRIVEABILITY - NGC |