Test TC-43A - High Speed Fan CTRL Relay Circuit (DTC 35)

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For circuit & connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagrams, see WIRING DIAGRAMS section. After each repair, perform TEST VER-2 .

Using DRB, erase trouble codes. Actuate high speed radiator fan relay. If a clicking sound cannot be heard when relay is actuated, go to step 4). If a clicking sound can be heard when relay is actuated, go to next step.
At this time, the condition required to set trouble code is not present. HIGH SPEED FAN CTRL RELAY CIRCUIT trouble code sets if the relay control circuit does not reflect the proper state (high or low) requested by Powertrain Control Module (PCM). Possible causes are: open or shorted coil in relay, control circuit wire open or shorted, open or shorted ignition power feed to relay, or failed control circuit driver in PCM. Go to next step.
Inspect wiring and connectors. Repair as required. If wiring and connectors are okay, ensure DRB is still actuating high speed radiator fan relay. Wiggle harness from relay to PCM. If wiggling interrupts clicking, repair wiring where wiggling caused clicking to interrupt. If clicking is not interrupted, see INACTIVE TROUBLE CODE CONDITION . Test is complete.
If a clicking sound cannot be heard when relay is actuated in step 1), remove high speed radiator fan relay. High speed radiator fan relay is located in power distribution center, near left shock tower. Using DRB in voltmeter mode, check voltage on high speed radiator fan relay connector terminal "A" (Light Green/Black wire). If voltage is less than 10 volts, repair open Light Green/Black wire. If voltage is more than 10 volts, go to next step.
Using an external ohmmeter, check resistance between high speed radiator fan relay terminals No. 85 and No. 86. See Figure . If resistance is more than 100 ohms, replace high speed radiator fan relay. If resistance is less than 100 ohms, go to next step.
Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. PCM is located under air cleaner. Using DRB in ohmmeter mode, check resistance of high speed radiator fan relay connector terminal "C" (Dark Blue/Pink wire). If resistance is less than 5 ohms, repair short to ground in Dark Blue/Pink wire. If resistance is more than 5 ohms, go to next step.
Using an external ohmmeter, check resistance of Dark Blue/Pink wire between high speed radiator fan relay connector terminal "C" and PCM connector terminal No. 31. If resistance is more than 5 ohms, repair open Dark Blue/Pink wire. If resistance is less than 5 ohms, replace PCM.