Problem:Cooling Fan and Condenser Fan Inoperative - (Pages 21 - 24)626 Gasoline

Test Conditions: (1) Key at "ON" (engine off)
(2) Fan speed at "1"
(3) A/C switch "ON"

Important: (1) The A/C indicator light should be on. If it is not on or flashing, see "Compressor Clutch Inoperative" before proceeding.
(2) The cooling fan and condenser fan should operate continuously whenever the A/C and fan switches are on.

WATER TEMPERATURE SWITCH LOCATION:

Step 1. Disconnect the water temperature switch connector.

CHECKING RESULTS

A. If both fans operate, reconnect the water temperature switch connector and proceed to Step 3.

B. If both fans do not operate, reconnect the water temperature switch connector and proceed to Step 2.

C. If only the cooling fan operates, reconnect the water temperature switch connector and proceed to Step 5.

D. If only the condenser fan operates, reconnect the water temperature switch connector and proceed to Step 2.

YELLOW WIRE CHECK AT COOLING FAN MOTOR CONNECTOR:

Step 2. Check the yellow wire for power at the cooling fan motor connector.

CHECKING RESULTS

A. If power exists repair or replace the cooling fan motor.

B. If no power exists, check the yellow wire for a loss of continuity between the 20 AMP fuse marked "Cooling Fan" and the cooling fan motor connector.

A/C RELAY CONNECTOR:

A/C RELAY CONNECTOR WIRES:

Step 3. Check the light/green-yellow wire for power at the A/C relay #1 connector.

Note: You will notice two relays located next to each other that look the same, check color codes for positive identification.

CHECKING RESULTS

A. If no power exists, check the light/greenyellow wire for a loss of continuity between A/C relay #2 connector and A/C relay #1 connector.

Note: Color Code Changes

A/C RELAY CHECK:

B. If power exists, follow the (3) steps below in order to troubleshoot the A/C relay #1.
(1) Remove A/C Relay #1 from connector.
(2) Apply 12 volts to terminals 1 & 2 as shown.
(3) Using OHM meter, check for continuity between terminals 3 & 4 as shown.
^ If continuity exists, reconnect the A/C relay #1 and proceed to Step 4.
^ If no continuity exists, replace the relay.

A/C RELAY #1 CONNECTOR CHECK:

Step 4. Ground the yellow-green wire at the A/C relay #1 connector.

CHECKING RESULTS

A. If the cooling fan motor does not operate, check the yellow-green wire for a loss of continuity between the cooling fan motor connector and the A/C relay #1 connector.

B. If the cooling fan motor operates, check both black wires of A/C relay #1 for a loss of continuity between ground to connector.

LIGHT/GREEN-RED WIRE CHECK ATCONDENSOR FAN MOTOR CONNECTOR:

Step 5. Check the light/green-red wire for power at the condenser fan motor connector.

CHECKING RESULTS

A. If power exists, proceed to Step 6.

B. If no power exists, check the light/green-red wire for a loss of continuity between the ignition relay connector and the condenser fan motor connector.

BLUE-WHITE WIRE CHECK AT CONDENSER FAN MOTOR:

Step 6. Ground the blue-white wire at the condenser fan motor.

CHECKING RESULTS

A. If the condenser fan motor operates, proceed to Step 7.

B. If the condenser fan motor does not operate, repair or replace the condenser fan motor.

YELLOW WIRE CHECK AT CONDENSER FAN RELAY CONNECTOR:

CONDENSER FAN RELAY CHECK:

Step 7. Check the yellow wire for power at the condenser fan relay connector.

Note: You will notice two relays located next to each other that look the same, check color codes for positive identification.

CHECKING RESULTS

A. If no power exists, check the yellow wire for a loss of continuity between the 20 AMP fuse marked "Cooling Fan" and condenser fan relay connector.

B. If power exists, follow the (3) steps below in order to troubleshoot the condenser fan relay.
(1) Remove cooling fan relay from connector.
(2) Apply 12 volts to terminals 1 & 2 as shown.
(3) Using OHM meter, check for continuity between terminals 3 & 4 as shown.
^ If continuity exists, reconnect the cooling fan relay and proceed to step 8.
^ If no continuity exists, replace the relay.

GROUND YELLOW-GREEN WIRE AT CONDENSERFAN RELAY CONNECTOR:

Step 8. Ground the yellow-green wire at the condenser fan relay connector.

CHECKING RESULTS

A. If the condenser fan motor operates check the yellow-green wire for a loss of continuity between A/C relay #1 connector and condenser fan relay connector.

B. If the condenser fan motor does not operate, proceed to Step 9.

GROUND BLUE-WHITE WIRE AT CONDENSER FAN RELAY CONNECTOR:

Step 9. Ground the blue-white wire at the condenser fan relay connector.

CHECKING RESULTS

A. If the condenser fan motor does not operate, check the blue-white wire for a loss of continuity between condenser fan motor connector and condenser fan relay connector.

B. If the condenser fan motor operates, check the black wire for a loss of continuity between ground and condenser fan relay connector.