Sable V6-232 3.8L (1988)
Electric engine cooling fan wiring diagram. Type 23 4-153/2.5L engine w/man. trans.
Refer to Figs. 24, 25 and 26, during the following procedure. It should be noted that the fan controlled has an internal circuit protection that will open
the fan circuit if the fan relay coil is shorted.
1.
With ignition switch in the Off position, disconnect integrated controller electrical connector. Using a suitable digital voltmeter, measure voltage
between battery ground terminal and pins 1, 2, 6 and 7 of the integrated controller electrical connector.
a. If voltmeter readings are 10 1/2 volts or more, proceed to step 2.
b. If voltmeter readings are less than 10 1/2 volts, check circuit and repair as necessary.
2.
With ignition switch in the Off position and integral controller electrical connector disconnected, connect a jumper wire between integrated
controller electrical connector pins 3 and 6.
a. If fan motor is now operating, proceed to step 3.
b. If fan motor is not operating, proceed to step 4.
3.
With ignition switch in Off position and integral relay control module connected, disconnect processor. Place ignition switch in key on position
and note if cooling fan is operating at low speed.
a. If cooling fan is not operating at low speed, proceed to step 6.
b. If cooling fan is operating at low speed, replace integral controller and re-check system.
4.
With ignition switch in the Off position, disconnect integrated controller and cooling fan motor electrical connectors. Connect a jumper wire
between integrated controller electrical connector terminal 3 and 6. Using a suitable digital voltmeter, measure voltage at cooling fan electrical
connector.
