Auto-Cruise Control: Overview Mitsubishi Eclipse IV рестайлинг

GENERAL DESCRIPTION

By using the auto-cruise control system, the driver can select and maintain a desired cruising speed [between 40 km/h (25 mph) and 200 km/h (124 mph)] without depressing the accelerator pedal.

Scheme 1

The auto-cruise control system allows driving without stepping on the accelerator pedal by setting a random speed between 40 km/h (25 mph) and 200 km/h (124 mph). Malfunctions in this system can be investigated by the following methods.

The auto-cruise control system consists of the engine control module (ECM) < M/T > or powertrain control module (PCM) < A/T >, control switches and sensors. The control switches and sensors monitor the state of the vehicle. The ECM < M/T > or PCM < A/T > controls the throttle valve opening angle in the throttle body in accordance with the input signals from the switches and sensors. If the PCM detects a malfunction on any of those components, the ECM < M/T > or PCM < A/T > estimates where the problem may be occurring, and will set a diagnostic trouble code. Diagnostic trouble codes cover the auto-cruise control switch, stoplight switch and ECM < M/T > or PCM < A/T >.

CIRCUIT OPERATION

This circuit judges the signals of each switch ("COAST/SET", "ACC/RES" and "CANCEL") of the auto-cruise control switch. The ECM < M/T > or PCM < A/T > detects the state of the auto-cruise control switch by sensing the voltages shown below.

1. When all switches are OFF: 4.7-5.0 volts
2. When the "CRUISE" (MAIN) switch is "ON": 0-0.3 volt
3. When the "COAST/SET" switch is ON: 2.0-2.8 volts
4. When the "ACC/RES" switch is ON: 3.3-4.1 volts
5. When the "CANCEL" switch is ON: 0.8-1.5 volts

1. Battery positive voltage is supplied to the stoplight switch (terminal 2 and 3).
2. When the brake pedal is depressed, battery positive voltage is applied to the ECM < M/T > or PCM < A/T > (terminal 9 and 33).

This circuit judges the signals of clutch pedal position switch. The ECM detects the state of the clutch pedal position switch by sensing the voltages shown below.

1. When the brake pedal is depressed (clutch pedal position switch are OFF): 0-0.3 volt.
2. When the brake pedal is released (clutch pedal position switch are ON): 4.7-5.0 volts.

1. Battery positive voltage is applied to the transmission range switch (terminal 8) when the ignition switch is turned "ON."
2. Battery positive voltage is applied to the PCM terminal 77 when the selector lever is in the "N" range. The PCM judges that the selector lever is in the "N" range when the battery positive voltage is applied.

The ECM < M/T > or PCM < A/T > detects "CRUISE" (MAIN) switch "ON" signal to illuminate the "CRUISE" indicator light on the combination meter.

See also:
• ENCRYPTED CODE REGISTRATION CRITERIA TABLE
• HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODE
• HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES