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Home >> Jeep >> 1996 >> Cherokee Classic, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (CRUISE CONTROL SYSTEMS - 95 Cirrus & Stratus (VIN X), 96 Breeze, Cirrus & Stratus) >> Self-Diagnostics Tests >> Test TC-86A - Speed Control Switch Always High

Test TC-86A - Speed Control Switch Always High

WARNING: This page is about a different car, the 1996 Plymouth Breeze, 1996 Dodge Stratus, 1996 Chrysler Cirrus, 1995 Dodge Stratus, and 1995 Chrysler Cirrus. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using scan tool, read speed control inputs. While observing scan tool display, push speed control ON/OFF switch several times and leave on. If scan tool displays speed control switch on and off, go to TEST TC-86B - SPEED CONTROL SWITCH ALWAYS HIGH . If scan tool does not display speed control switch on and off, go to next step.
  2. Disconnect 2-pin speed control ON/OFF switch connector (located behind speed control ON/OFF switch). Using scan tool in voltmeter mode, check voltage on 2-pin speed control switch connector signal circuit Red/Light Green. If voltage is 4.8 volts or less, go to next step. If voltage is more than 4.8 volts, repair short to voltage on signal circuit. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
  3. Turn ignition off. Using scan tool in ohmmeter mode, check resistance of 2-pin speed control switch connector ground circuit Black/Light Green wire. 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 - SPEED CONTROL VERIFICATION .
  4. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance of signal circuit Red/Light Green wire between 2-pin speed control switch connector and PCM connector terminal No. 41. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, go to step  6.
  5. Using an external ohmmeter, check resistance across speed control ON/OFF switch terminals. If resistance is less than 25 k/ohms, replace PCM. Perform TEST SC-VER - SPEED CONTROL VERIFICATION . If resistance is 25 k/ohms or less, replace speed control ON/OFF switch. Perform TEST VSS-VER - ROAD TEST VERIFICATION .
  6. Disconnect 4-pin clockspring connector. Using an external ohmmeter, check resistance of speed control ON/OFF switch signal circuit Red/Light Green wire between 4-pin clockspring connector and PCM connector terminal No. 41. If resistance is less than 5 ohms, repair open signal circuit at clockspring connector. Perform TEST VSS-VER - ROAD TEST VERIFICATION . If resistance is 5 ohms or more, repair open signal circuit between 4-pin clockspring connector and PCM connector terminal No. 41. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
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