Cruise Control Module
Turn ignition on. Using voltmeter, check voltage at cruise control unit connector terminals with electrical connector attached (backprobe terminals). See Fig 1. If voltages are not as specified, check appropriate circuit and component. If circuit and component are okay, replace cruise control module.
- Backprobe terminal No. 1 (Blue wire). If battery voltage is present, go to next step. If battery voltage is not present, check for blown ACC fuse (10-amp) on Sephia, or blown TURN fuse (10-amp) on Sportage. If fuse is okay, check Blue wire for open circuit. See WIRING DIAGRAMS .
- Backprobe terminal No. 2 (Red/Black wire on Sephia; Orange wire on Sportage). If battery voltage is present with brake pedal depressed, go to next step. If voltage is not present with brake pedal depressed, check STOP fuse in passenger compartment fuse box. If fuse is okay, check brakelight switch. See BRAKELIGHT SWITCH . If switch is okay, check for open circuit in wiring.
- Backprobe terminal No. 3. Turn cruise control main switch on. On automatic transmissions, battery voltage should be present in Park or Neutral positions, and no voltage should be present in all other gears. If voltage is not as specified, check transmission range switch and wiring. See TRANSMISSION RANGE SWITCH TEST . On manual transmissions, battery voltage should be present with clutch pedal depressed. If voltage is not present, go to CLUTCH PEDAL POSITION (CPP) SWITCH test. If voltage is as specified, go to next step.
- Backprobe terminal No. 4. Turn ignition switch and cruise control main switch on. Battery voltage should be present. If voltage is present, go to next step. If voltage is not present, finish CRUISE CONTROL MODULE test procedure. If all other tests are okay, replace cruise control module.
- Backprobe terminal No. 5. Voltage should pulse between 0-5 volts while rotating rear tire. If voltage is as specified, go to next step. If voltage is not as specified, go to VEHICLE SPEED SENSOR test.
- Turn ignition switch off. Use an ohmmeter to check resistance between cruise control module terminal No. 6 (Black wire) and ground. If resistance is below one ohm, go to next step. If resistance is above one ohm, check Black wire for open circuit to ground. See WIRING DIAGRAMS .
- Turn ignition switch on. Backprobe terminal No. 7. With brake pedal depressed, battery voltage should be present. If battery voltage is present, go to next step. If battery voltage is not present, check STOP fuse in passenger compartment fuse box. If fuse is okay, go to BRAKELIGHT SWITCH test. If brakelight switch is okay, check for open circuit in wiring.
- Backprobe terminal No. 8 (terminal No. 9 on Sportage). Check for battery voltage when SET/COAST switch is depressed. If battery voltage is present, go to next step. If battery voltage is not present, go to CRUISE CONTROL SWITCH test. If cruise control switch is okay, check for open circuit in wiring.
- Backprobe terminal No. 9 (terminal No. 8 on Sportage). Check for battery voltage when RESUME/ACCEL switch is depressed. If battery voltage is present, go to next step. If battery voltage is not present, go to CRUISE CONTROL SWITCH test. If cruise control switch is okay, check for open circuit in wiring.
- Backprobe terminal No. 10. Check for battery voltage when cruise control main switch is turned on. If battery voltage is not present, check cruise control main switch and wiring. See WIRING DIAGRAMS . If battery voltage is present and all other tests were okay, replace cruise control module.