Cabriolet L4-1781cc 1.8L SOHC (JH) (1989)
Radiator Cooling Fan Motor Relay: All Technical Service Bulletins
Radiator Fan - Stays On High Speed When Extremely Cold
Radiator Fan stays on high speed at extreme high ambient Temperature
All Models vith A/C, except Vanagon
Nov. 30, 1990
At high ambient temperatures of 105~F (41~C) and above, the radiator cooling fan stays on high speed with the ignition off, discharging the battery.
At these ambient temperatures, gas pressure of the R12 refrigerant activates the A/C high pressure switch and triggers the high speed radiator fan relay.
(Refer to applicable wiring diagram)
Replace the radiator fan high speed relay with Part No. 321 919 505A and modify the A/C high pressure switch wiring as follows:
relay, Part No. 321 919 505A
terminal housing, Part No. 161 971 989C
terminals, Part No. N 017 490.7
(sold in package of 25)
inline fuse holder with 10 Amp fuse
CAUTION Part numbers are for reference only. Always check with your Parts Department for latest information.
Disconnect connector T2e from A/C high pressure switch. Leave female connector disconnected.
Prepare two 18 AWG wires, first wire is 150 mm (6 in.) and second is 1.5 Meters (5 feet long) and crimp wire ends with female blade terminal,
Part No. N 017 490.7
Insert into terminal housing, Part No. 161 971 989C, one each of the terminals of the short and long wires and the other end of the short wire into
cavity 5 of the high speed radiator fan relay socket.
Connect housing, Part No. 161 971 989C to A/C high pressure switch.
Cut the long wire aprox. 125 mm (5 in.) from other end and install onto wire an inline fuse holder with a 10 Amp fuse.
NOTE For inline fuse holder installation refer to instructions supplied with fuse holder kit.
Route long wire along fender well and engine close out panel to ignition coil. Fasten wire with tie wraps to existing harness and hoses.
Connect wire (with fuse holder and terminal) to ignition coil terminal 15.
Install radiator fan relay, Part No. 321 919 505A into radiator high speed fan relay socket.
Labor Operation No.: 19 08 31 0
Suggested Repair Time: