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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Tests W/Codes - 2.5L Flex Fuel) >> Self-Diagnostic Tests >> Test TC-32A - A/C Clutch Relay Circuit (DTC 33)

Test TC-32A - A/C Clutch Relay Circuit (DTC 33)

WARNING: This page is about a different car, the 1994 Plymouth Acclaim and 1994 Dodge Spirit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE  . For wiring diagrams, see WIRING DIAGRAMS  .
  1. Using DRB, erase trouble codes. Using DRB, actuate A/C clutch relay. If A/C clutch relay is not clicking, go to step 5). If A/C clutch relay is clicking, condition required to set trouble code is not present at this time. Go to next step.
  2. The A/C CLUTCH RELAY CIRCUIT trouble code sets if an open or short is detected in A/C clutch relay Dark Blue/Orange wire. Possible causes are: open or short in A/C clutch relay coil windings, open or short in A/C clutch relay Dark Blue/Orange wire, open or short in A/C clutch Gray wire or failed driver in PCM. Go to next step.
  3. Inspect all related wiring and connectors and repair as necessary. Perform TEST VER-2. If no problems were found with wiring and connectors, go to next step.
  4. While still actuating A/C clutch relay, wiggle wiring harness from A/C clutch relay to PCM. If relay stopped clicking while wiggling wiring harness, repair wiring and connectors as necessary. Perform TEST VER-2  . If relay did not stop clicking while wiggling wiring harness, see INACTIVE TROUBLE CODE CONDITION  . Perform TEST VER-2.
  5. Disconnect A/C clutch relay. Put DRB in voltmeter mode. Using DRB, check voltage on A/C clutch relay connector Dark Blue/Black wire. If voltage is less than 10 volts, go to step 9). Perform TEST VER-2. If voltage is more than 10 volts, turn ignition off.
  6. Using an external ohmmeter, check resistance between A/C clutch relay terminals. See Fig 1 . If resistance is more than 100 ohms, replace A/C clutch relay. If resistance is less than 100 ohms, go to next step.
    Fig 1: Testing Relay (TC-32A)
    G94C31759
  7. Disconnect PCM connector. Put DRB in ohmmeter mode. Using DRB, check resistance of A/C clutch relay connector Dark Blue/Orange wire. If resistance is less than 5 ohms, repair short to ground in Dark Blue/Orange wire. Perform TEST VER-2. If resistance is more than 5 ohms, go to next step.
  8. Using an external ohmmeter, check resistance of Dark Blue/Orange wire between A/C clutch relay connector and PCM connector terminal No. 34. If resistance is more than 5 ohms, repair open in Dark Blue/Orange wire. Perform TEST VER-2. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2.
    NOTE: A/C clutch relay is supplied voltage from radiator fan relay.
  9. Disconnect radiator fan relay. Put DRB in voltmeter mode. Using DRB, check voltage on radiator fan relay connector Gray wire. If voltage is less than 10 volts, repair open in Gray wire. Perform TEST VER-2  .
  10. If voltage is more than 10 volts, substitute low speed radiator fan relay for a known good low speed radiator fan relay. Using DRB, actuate A/C clutch relay. Put DRB in voltmeter mode.
  11. Using DRB, check voltage on radiator fan relay Light Green wire. If voltage is more than 10 volts, replace original low speed radiator fan relay. Perform TEST VER-2. If voltage is less than 10 volts, repair open in radiator fan relay Light Green wire. Perform TEST VER-2.
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