Radiator Fan - Stays On High Speed When Extremely Cold
90vw09Subject: Radiator Fan stays on high speed at extreme high ambient Temperature
Model(s): All Models vith A/C, except Vanagon
Group: 19
Number: 90-01
Date: Nov. 30, 1990
Condition:
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.
Service Solution:
(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:
Parts Required:
1 relay, Part No. 321 919 505A
1 terminal housing, Part No. 161 971 989C
4 terminals, Part No. N 017 490.7
(sold in package of 25)
1 inline fuse holder with 10 Amp fuse
(procure locally)
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: 55 TU
QC: 5 TU
Total: 60 TU