With Automatic Transaxle
COOLING FAN SYSTEM INSPECTION1. Verify that the engine is cold.
2. Turn the ignition switch to ON.
3. Verify that the cooling fan is not operating.
4. If the cooling fan is operating, do as follows.
a. Connect the Special Service Tools (SST)s New Generation Star (NGS) tester to the data link connector-2.
b. Select the "PID/DATA MONITOR AND RECORD" function on the NGS display.
c. Select the "Cooling Fan" and verify that the cooling fan control signal is OFF.
I. If the cooling fan control signal is ON, check the following.
^ PCM terminal voltage, Engine coolant temperature signal
II. If the cooling fan control signal is OFF, check the following.
^ Cooling fan relay
^ Short circuit in wiring harnesses and connectors (Main relay - Cooling fan relay - PCM)
5. Start the engine.
6. Verify that the cooling fan is operating when engine is hot.
7. If the cooling fan does not operate, do as follows.
a. Connect the SSTs (NGS) to the data link connector-2.
b. Select the "SIMULATION TEST" function.
c. Turn the cooling fan relay from OFF to ON by using the "SIMULATION TEST" function and check for the cooling fan operation.
I. If the cooling fan operates, check the following.
^ PCM terminal voltage
^ Engine coolant temperature signal
II. If the cooling fan does not operate, do as follows.
a. Select the "SIMULATION TEST" function and turn the cooling fan relay from OFF to ON by using the "SIMULATION TEST" function. Operate the cooling fan relay and check if the operation sound of the relay is heard.
b. If the operation sound is heard, check the following.
^ Wiring harnesses and connectors
(Cooling fan relay - Cooling fan motor)
^ Cooling fan motor
c. If the operation sound is not heard, check the following.
^ Cooling fan relay
^ Open circuit in wiring harnesses and connectors (Main relay - Cooling fan relay - PCM)
CONDENSER FAN RELAY
1. Verify that the A/C switch and fan switch are OFF.
2. Start the engine and let it idle.
3. Verify that the cooling fan is not operating.
4. If the condenser fan is operating, check the short circuit in wiring between condenser fan relay and PCM terminal 69.
5. Turn the A/C switch and fan switch ON.
6. Verify that the condenser fan is operating.
7. Turn the A/C switch and fan switch off.
8. If the condenser fan does not operate, do as follows.
a. Connect the SSTs (NGS) to the data link connector-2.
b. Select the "SIMULATION TEST" function on the NGS display.
c. Turn the condenser fan relay from OFF to ON by using the "SIMULATION TEST" function and check for the condenser fan operation.
I. If the condenser fan operates, check the following.
^ PCM terminal voltage
^ A/C signal
^ Blower signal
II. If the condenser fan does not operate, do as follows.
a. Select the "SIMULATION TEST" function and turn the condenser fan relay from OFF to ON by using the "SIMULATION TEST" function. Operate the condenser fan relay and check if the operation sound of the relay is heard.
b. If the operation sound is heard, check the following.
^ Wiring harness and connectors
(Condenser fan relay - Condenser fan motor)
^ Condenser fan motor
c. If the operation sound is not heard, check the following.
^ Condenser fan relay
^ Open circuit in wiring harness and connectors
(Main relay - Condenser fan relay - PCM)