Test FC-31A - Radiator Fan Control Relay Circuit (DTC 35)
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see WIRING DIAGRAMS
at end of article.
- Remove radiator fan relay. Substitute another relay. If substitute relay is clicking, replace original radiator fan relay. Perform VERIFICATION PROCEDURE VER-2. If substitute relay is not clicking, go to next step.
- Remove substitute radiator fan relay. Place DRB-II in voltmeter mode. Using DRB-II, check voltage of radiator fan relay connector ignition feed circuit. See IGNITION FEED CIRCUIT TERMINAL IDENTIFICATION table.IGNITION FEED CIRCUIT TERMINAL IDENTIFICATION
Application Wire Color AA, AC & AP Bodies White AG & AJ Bodies Dark Blue/White - If voltage is less than 10 volts, repair open in ignition feed wire. Perform VERIFICATION PROCEDURE VER-2. If voltage is more than 10 volts, turn ignition off. Disconnect Powertrain Control Module (PCM) connector.
- Place DRB-II in ohmmeter mode. Using DRB-II, check resistance of radiator fan relay connector fan relay control circuit (Dark Blue/Pink wire). If resistance is less than 5 ohms, repair short to ground in Dark Blue/Pink wire. Perform VERIFICATION PROCEDURE VER-2. If resistance is more than 5 ohms, go to next step.
- Using an external ohmmeter, check resistance of fan relay control wire (Dark Blue/Pink wire) between PCM connector terminal No. 31 and radiator fan relay.
- If resistance is more than 5 ohms, repair open in Dark Blue/Pink wire. Perform VERIFICATION PROCEDURE VER-2. If it is less than 5 ohms, replace PCM. Perform VERIFICATION PROCEDURE VER-2.