LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 1996 >> Grand Cherokee Orvis >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 5.2L >> Self-Diagnostic Tests >> Test TC-15B - Speed Control Solenoid Circuits Or Speed Control Power Relay Circuits
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test TC-15B - Speed Control Solenoid Circuits Or Speed Control Power Relay Circuits

NOTE: Perform TEST TC-15A  before proceeding.
NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  DIRECTORY. For component location, see wiring diagram in the appropriate WIRING DIAGRAMS article. See following list.
  1. Using scan tool in ohmmeter mode, check resistance of S/C servo 4-pin connector, ground circuit (Black wire). If resistance is 5 ohms or more, repair open ground circuit and perform TEST VER-4A . If resistance is less than 5 ohms, go to next step.
  2. Turn ignition off. Reconnect S/C servo 4-pin connector. Disconnect Powertrain Control Module (PCM) connectors. Inspect connectors and terminals for damage. Repair connectors and terminals as necessary and perform TEST VER-4A. If connectors and terminals are okay, go to next step.
  3. Using an external ohmmeter, check resistance between PCM Gray connector, 12-volt supply circuit (Yellow/Red wire) and S/C vent solenoid control circuit (Light Green/Red wire). If resistance is 35-55 ohms, replace PCM and perform TEST VER-4A . If resistance is not 35-55 ohms, go to next step.
  4. Check resistance between PCM Gray connector, 12-volt supply circuit (Yellow/Red wire) and S/C vacuum solenoid control circuit (Tan/Red wire). If resistance is 35-55 ohms, replace PCM and perform TEST VER-4A. If resistance is not 35-55 ohms, go to next step.
  5. Check resistance of S/C vacuum solenoid control circuit (Tan/Red wire) between PCM Gray connector and S/C servo 4-pin connector. If resistance is 5 ohms or more, repair open S/C vacuum solenoid control circuit and perform TEST VER-4A. If resistance is less than 5 ohms, go to next step.
  6. Check resistance of S/C vent solenoid control circuit (Light Green/Red wire) between PCM Gray connector and S/C servo 4-pin connector. If resistance is less than 5 ohms, replace speed control servo and perform TEST VER-4A. If resistance is 5 ohms or more, repair open S/C vent solenoid control circuit and perform TEST VER-4A .
scientia non olet · About LEMON Manuals