Cruise Control: Testing and Inspection

CRUISE CONTROL SYSTEM BEFORE TROUBLESHOOTING
Before commencing troubleshooting, inspect each of the following sections, and if there is an abnormality, carry out a repair.
1. Check if the installation and connection routes of the cables and vacuum hoses of the cruise vacuum pump assembly, actuator and pulley assembly are all normal.
2. Check if the pulley assembly and the movement of all cables are all working smoothly.
3. Check if there is no excessive play or tension in each cable.

SELF-DIAGNOSIS CHECKING
Self-diagnosis checking is performed when there has been an automatic cancellation, without cancel switch operation.
1. The following methods can be used for checking the diagnosis. Note that the data link connector is located in the fuse box.

1) If an indicator lamp is used. Connect directly between the ground terminal and the terminal for CC of the data link connector. It is possible to discover which circuit is the cause of the cancellation by verifying the indication shown by the indicator lamp with display patterns shown.

2) All diagnostic trouble codes are stored so that it is possible to check if a problem occurred in the past or not until disconnecting the battery terminals, even when the ignition key is turned to OFF.

CC: Cruise control

Diagnosis display patterns and codes

TROUBLESHOOTING PROCEDURES
First, select the applicable malfunction symptom from the Trouble Symptom Charts. Conduct the self-diagnostic test following the directions on the charts. Determine the condition of all function circuits.

CAUTION: Because the computer (sell-diagnosis) memory data will be erased when the system is unintentionally canceled during fixed-speed driving, the Ignition switch and/or the cruise main switch of the CC system should not be switched OFF, and the battery should not be disconnected.

1. Make the following preliminary inspections.
- Check that the installation of the actuator, accelerator cable are correct, and that the cables and links are securely connected.
- Check that the accelerator pedal moves smoothly.
- Adjust the cable so there is not excessive tension or excessive play on the accelerator cable.
- Check that the CCM, actuator, cruise main and control switch and the connector of each cancel switch are connected securely.
2. Check in the sequence indicated in the Trouble Symptom Chart.
3. If these checks indicate a normal condition, replace the cruise control module.

TROUBLE SYMPTOM CHARTS