LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 1996 >> Cherokee Classic, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.0L >> Diagnostic Trouble Code (DTC) Identification >> Test TC-16A - A/C Clutch Relay Circuit
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Test TC-16A - A/C Clutch Relay Circuit

NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article in this section.
  1. Using scan tool, actuate A/C clutch relay. Listen for clicking sound at A/C clutch relay. If no clicking sound is heard at A/C clutch relay, go to step 5). If clicking sound is heard at ASD relay, go to next step.
  2. Condition required to set DTC is not present at this time. A/C CLUTCH RELAY CIRCUIT DTC sets if Powertrain Control Module (PCM) detects an open or shorted condition in A/C clutch relay control circuit. Possible causes are: open or shorted relay coil, open fused ignition output circuit, open or shorted A/C clutch relay control circuit, defective PCM, defective connector terminals or connector wires. Go to next step.
  3. Inspect all related wiring and connectors. Repair wiring and connectors as necessary and perform TEST VER-2A. If wiring and connectors are okay, go to next step.
  4. Wiggle wiring harness from A/C clutch relay to PCM. Ensure scan tool is still actuating A/C clutch relay. If A/C clutch relay stops clicking, repair harness as necessary and perform TEST VER-2A. If A/C clutch relay continues clicking, see INACTIVE DTC CONDITION . Test is complete. Perform TEST VER-2A .
  5. Remove A/C clutch relay. Inspect relay connector and terminals for damage. Repair connector and terminals as necessary and perform TEST VER-2A. If connector and terminals are okay, go to next step.
  6. Using scan tool in voltmeter mode, check voltage on A/C clutch relay connector, fused ignition switch output circuit (Dark Blue/White wire). If voltage is 10 volts or less, repair open fused ignition switch output circuit and perform TEST VER-2A. If voltage is more than 10 volts, go to next step.
  7. Using an external ohmmeter, check resistance between A/C clutch relay terminals No. 85 and 86. See Figure. If resistance is 100 ohms or more, replace A/C clutch relay and perform TEST VER-2A. If resistance is less than 100 ohms, go to next step.
  8. Ensure ignition is off. Disconnect PCM Gray connector. Inspect connector and terminals for damage. Repair connector and terminals as necessary and perform TEST VER-2A . If connector and terminals are okay, go to next step.
  9. Using scan tool in ohmmeter mode, check resistance of PCM Gray connector, A/C compressor clutch relay control circuit (Dark Blue/Orange wire). If resistance is less than 5 ohms, repair short to ground in A/C compressor clutch relay control circuit and perform TEST VER-2A. If resistance is 5 ohms or more, go to next step.
  10. Using an external ohmmeter, check resistance of A/C compressor clutch relay control circuit (Dark Blue/Orange wire) between A/C clutch relay connector and PCM Gray connector. If resistance is 5 ohms or more, repair open A/C compressor clutch relay control circuit and perform TEST VER-2A. If resistance is less than 5 ohms, replace PCM and perform TEST VER-2A .
scientia non olet · About LEMON Manuals