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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-15C - Speed Control Power Relay Circuit & Speed Control Solenoid Circuits

Test TC-15C - Speed Control Power Relay Circuit & Speed Control Solenoid Circuits

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. Disconnect Speed Control (SC) servo 4-pin connector. Turn ignition on. Put speed control on/off switch in ON position. DO NOT depress brake pedal during testing. Using scan tool in voltmeter mode, check voltage on SC servo connector Dark Blue/White wire. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, perform TEST SC-1B - CHECKING SPEED CONTROL OPERATION .
  2. Using scan tool in ohmmeter mode, check resistance on SC servo connector Black wire. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Black wire. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
  3. Reconnect SC servo connector. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in voltmeter mode, check voltage on PCM connector terminal No. 78 (Light Green/White wire). Record voltage. Using scan tool in voltmeter mode, check voltage on PCM connector terminal No. 80 (Black/Yellow wire). If voltage on both circuits is more than 9 volts, replace PCM. Perform TEST SC-VER - SPEED CONTROL VERIFICATION . If voltage on both circuits is 9 volts or less, go to next step.
  4. Disconnect SC servo 4-pin connector. Using scan tool in ohmmeter mode, check resistance of SC servo connector Light Green/White wire. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground in Light Green/White wire. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
  5. Using scan tool in ohmmeter mode, check resistance of SC servo connector Black/Yellow wire. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground in Black/Yellow wire. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
  6. Using an external ohmmeter, check resistance of SC vacuum solenoid control circuit Light Green/White wire between SC servo connector and Powertrain Control Module (PCM) connector terminal No. 78. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Light Green/White wire. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
  7. Using an external ohmmeter, check resistance of SC vent solenoid control circuit Black/Yellow wire between SC servo connector and PCM connector terminal No. 80. If resistance is less than 5 ohms, replace SC control servo. Perform TEST SC-VER - SPEED CONTROL VERIFICATION . If resistance is 5 ohms or more, repair open Black/Yellow wire. Perform TEST SC-VER - SPEED CONTROL VERIFICATION .
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