LEMON Manuals: Even more car manuals for everyone
Home >> Eagle >> 1997 >> Talon ESi, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Cruise Control System - Non-Turbo >> Self-Diagnostics >> Test SC-7A - Checking Speed Control Operation

Test SC-7A - Checking Speed Control Operation

NOTE: Use this test only if no speed control trouble codes are set.
  1. Turn ignition on. Using scan tool, monitor speed control switch inputs. While observing scan tool, press speed control ON switch. If scan tool displays speed control switch ON, go to next step. If scan tool does not display speed control switch ON or if there is a complaint with speed control engage light, go to TEST SC-8A .
  2. While observing scan tool, press SET, RESUME and CANCEL switches several times. If scan tool displays switch functions are working properly, go to step 6). If scan tool displays only one or 2 switches work properly, replace speed control switching assembly. Perform TEST SC-VER . If scan tool does not display any switch functions working properly, go to next step.
  3. Turn ignition off. Access and disconnect 2-pin speed control switch connector located under air bag assembly. Using an external ohmmeter, check resistance of ground circuit between 2-pin speed control switch connector Blue wire and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open ground circuit to splice. Perform TEST SC-VER .
  4. Disconnect Powertrain Control Module (PCM) connector. Check resistance of speed control switch signal circuit between 2-pin speed control switch connector Black/White wire and PCM connector terminal No. 41 (Red wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in speed control switch signal circuit. Perform TEST SC-VER .
  5. Check resistance of speed control switch signal circuit between 2-pin speed control switch connector Black/White wire and ground. If resistance is less than 5 ohms, replace PCM. Perform TEST SC-VER . If resistance is 5 ohms or more, repair short to ground in speed control switch signal circuit. Perform TEST SC-VER .
  6. While observing scan tool, press brake pedal several times. If scan tool displays PRESSED and RELEASED, go to next step. If scan tool does not display PRESSED and RELEASED, go to TEST SC-9A .
  7. While observing scan tool, move gear selector to Drive. If scan tool displays Park/Neutral Position (PNP) switch as D/R, go to next step. If scan tool does not display PNP switch as D/R, go to TEST SC-10A .
  8. If speed control will not disengage when brake is applied, go to TEST SC-11A . If speed control will disengage when brake is applied, go to next step.
  9. Turn ignition off. Disconnect speed control servo connector. Using scan tool in ohmmeter mode, check resistance of ground circuit Black wire at speed control servo connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open ground circuit. Perform TEST SC-VER .
  10. Turn ignition on. Press speed control ON switch. Using scan tool in voltmeter mode, check voltage of speed control relay output circuit Dark Blue/White wire at speed control servo connector. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, go to TEST SC-7B .
  11. Reconnect speed control servo connector. Start engine. Allow engine to idle for one minute (this will charge vacuum servo). Turn engine off. Turn ignition on. Using scan tool, actuate speed control servo solenoids. Observe throttle. If throttle opened and closed, go to TEST SC-6A . If throttle does not open and close, go to TEST SC-7C .
scientia non olet · About LEMON Manuals