Cruise Control System Testing
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Remove side kick panel. Unplug wiring connector from computer. Inspect computer at connector on wire harness side. With ignition switch in the "ON" position and using a voltmeter, measure the voltage between terminal 7 and body ground with the main switch in the "ON" position. See Fig 1. If there is no battery voltage, check the control switch.
- Using voltmeter, measure voltage between terminal 12 and body ground. With parking brake lever pulled, voltage should be 0 volts. With parking brake lever returned, voltage should be 12 volts.
- Turn ignition switch to the "OFF" position. Using a voltmeter, measure the voltage between terminal 9 and body ground. If there is no battery voltage, check the stop light fuse.
- Using voltmeter, measure the voltage between terminal 8 and body ground. When brake pedal is depressed, voltage should be 12 volts. When brake pedal is released, voltage should be 0 volts. If voltage is not correct, check the brake pedal switch.
- Turn ignition switch switch to "ACC" position. Using an ohmmeter, check the continuity between terminal 11 and body ground. On manual transmission models, check with clutch pedal depressed. On automatic transmission models, check when shift lever is in "N" position. If there is no continuity between terminals, check the clutch switch or neutral start switch.
- Using an ohmmeter, measure the resistance between the terminals. Resistance between terminals 1 and 3 when brake pedal is pressed should be approximately 68 ohms. On Camry, when brake pedal is released, resistance reading should be infinity. On all models, resistance between terminals 2 and 3 should be approximately 30 ohms. If the resistances are not correct, check the actuator.
- Using an ohmmeter, check the continuity between terminal 4 and body ground when the control switch is turned to the "SET" position. If there is no continuity between terminals, check the control switch.
- Using an ohmmeter, check the continuity between terminal 13 and body ground when the control switch is pushed to the "RESUME" position. If there is no continuity between the terminals, check the control switch.
- Using an ohmmeter, check the continuity between terminal 6 and body ground when the vehicle is slightly pushed forward. At this time, the ohmmeter needle should repeatedly move back and forth. If the ohmmeter needle does not deflect, check the speed sensor.