Engine Cooling Fan Suzuki Swift II

SYSTEM TESTING

Note. See TROUBLE SHOOTING - BASIC PROCEDURES article in the GENERAL INFORMATION section.

Scheme 1

Scheme 2

1. Check cooling system fluid level. Start and run engine. Ensure coolant temperature is less than 199°F (93°C). If cooling fan operates, go to next step. If cooling fan does not operate, go to step 3).
2. Disconnect cooling fan thermoswitch, located near distributor. (Scheme 1) If cooling fan stops running, replace cooling fan thermoswitch. If cooling fan continues to operate after cooling fan thermoswitch is disconnected, check for short to voltage in Blue wire between cooling fan thermoswitch and cooling fan motor relay. If cooling fan still runs, check Blue/Red wire between cooling fan relay and cooling fan for short to voltage.
3. If cooling fan does not operate with coolant temperature less than 199°F (93°C), run engine until coolant temperature is more than 208°F (98°C). Feel radiator hoses for proper thermostat operation. If cooling fan operates, system is okay. If cooling fan does not operate, check fuse link "B" and IGN fuse in fuse block. If fuses are okay and cooling fan does not operate, go to next step.
4. With cooling fan thermoswitch connector disconnected, connect a fused jumper wire between thermoswitch harness connector terminals (Black/White and Blue wires). If cooling fan operates with ignition on, replace cooling fan thermoswitch. If cooling fan does not operate, go to next step.
5. Turn ignition off. Using a Digital Volt Ohmmeter (DVOM), check for continuity between Black (ground) wire of fan motor connector and ground. If continuity is present, go to next step. If continuity is not present, repair open or bad ground connection at Black (ground) wire. Ground connection is located on left front inner fender. (Scheme 2)
6. With engine running and fan thermoswitch terminals jumped, use a test light to backprobe cooling fan motor connector Blue wire. If test light glows, replace cooling fan motor. If test light does not glow, go to next step.
7. Using test light, probe cooling fan thermoswitch connector Black/White wire. If test light does not glow, repair open in Black/White wire between cooling fan thermoswitch and junction block connector. Junction block is located behind left side of instrument panel. (Scheme 3) If test light glows, check for voltage at fan relay connector terminal No. 1 (Blue wire). Go to COOLING FAN RELAY.

Scheme 3

Cooling Fan Relay

1. If voltage is not present at fan relay Blue wire, repair Blue wire between cooling fan thermoswitch and cooling fan relay. If voltage is present at fan relay terminal Blue wire, check relay terminal No. 3 (Black wire) to ensure ground is present. If ground is not present at Black wire, repair Black wire. If ground is present, go to next step.
2. Check for voltage at fan relay connector terminal No. 2 (White/Blue), if voltage is not present, check fuse link "B" and in-line fuse under dash (next to junction box). If voltage is present at fan relay terminal No. 2, check for continuity between fan relay terminal No. 4 (Blue/Red wire) and fan motor connector. If continuity does not exist, repair Blue/Red wire. If continuity does exist, replace fan relay.

Cooling Fan Thermoswitch

Remove thermoswitch from vehicle. Using ohmmeter, ensure continuity is correct between wire connector and thermoswitch body at indicated temperatures. Thermoswitch may be gradually heated in water for testing. See COOLING FAN THERMOSWITCH table.

COOLING FAN THERMOSWITCH

WIRING DIAGRAMS

See appropriate chassis wiring diagram in the WIRING DIAGRAMS Section.