3.
ARE THE WIRES O.K ? & ARE THE CONNECTIONS O.K ?
YES
a.
Go to "Signal Circuit Inspection" procedure
NO
a.
Repair as necessary and go to " Verification of Vehicle Repair " procedure
Check for damaged harness and terminals including rubber seals :
-. contact resistance, oxidation, corrosion, bent or broken terminals
-. harness connector connection, loose wires etc.
Check for poor connection between ECM and component :
-. backed out terminal, improper mating, broken locks and poor terminal to wire connection
ARE THE WIRES O.K ? & ARE THE CONNECTIONS O.K ?
YES
Go to "Signal Circuit Inspection" procedure
NO
Repair as necessary and go to " Verification of Vehicle Repair " procedure
DTCs listed below are stored in the scan tool
P1624/C018_C019
Check items with the scan tool and the multimeter
① Wiring harness inspection
② Check the fuse
③ Check the relay resistance
Specification
Resitance : below 1 Ω for open in the wire
Resitance : infinite for short to ground in the wire
Voltage : below 0.5V for short to power in the wire
Refer to the component and full circuit for connector configrations details
Start the engine and measure the voltage at the ECM terminal 20/C230-1.
IS THERE A BATTERY VOLTAGE ?
YES
Go to step 3
NO
Repair short in the wire between the radiator fan relay terminal 1 and the radiator fuse (40A)
Repair short in the wire between the radiator fan relay terminal 5 and the ECM No.3 fuse (10A)
Repair short in the wire between the radiator fan relay terminal 3 and the ECM terminal 20/C230-1.
Replace the fuse if the fuse is broken
Replace the relay if the relay is defective after checking the continuity between the relay terminal 3 and terminal 5. For more detailed information, Go to "Component Inspection" procedure
Go to step 3
Connect the scan tool to the data link connector(DLC) and trun the ignition switch ON.
Go to the actuation test for driving the radiator fan relay.
Press on the START key
IS THERE THE RADIATOR FAN WITH THE RADIATOR FAN RELAY ON OPERATED ?
YES
Go to "Verification Vehicle Repair" procedure
NO
Recheck the fuse and the radiator fan relay
Recheck the wiring harness
Go to step 7
Connect the LED lamp at the radiator fan relay terminal 3 after disconnecting the radator fan realy
Check the ground condition with the LED lamp when pressing on the START key.
IS THERE LED GREEN LAMP(GROUND) LIGHTED ?
YES
Go to "Verification Vehicle Repair" procedure
NO
Replace a known - good ECM and recheck. if the LED green lamp is ON, replace the ECM.
YES
Go to "Verification Vehicle Repair" procedure
Start the engine and measure the voltage at the ECM terminal 20/C230-1.
IS THERE A BATTERY VOLTAGE ?
YES
Go to step 3
NO
Repair open or short in the wire between the radiator fan relay terminal 1 and the radiator fuse (40A)
Repair open or short in the wire between the radiator fan relay terminal 5 and the ECM No.3 fuse (10A)
Repair open or short in the wire between the radiator fan relay terminal 3 and the ECM terminal 20/C230-1.
Replace the fuse if the fuse is broken
Replace the relay if the relay is defective after checking the continuity between the relay terminal 3 and terminal 5. For more detailed information, Go to "Component Inspection" procedure
Go to step 3
Connect the scan tool to the data link connector(DLC) and trun the ignition switch ON.
Go to the actuation test for driving the radiator fan relay.
Press on the START key
IS THERE THE RADIATOR AND THE CONDENSOR FAN WITH THE RADIATOR FAN RELAY ON OPERATED ?
YES
Go to "Verification of Vehicle Repair" procedure
NO
Recheck the fuse and the radiator fan relay
Recheck the wiring harness
Go to step 7
Connect the LED lamp at the radiator fan relay terminal 3 after disconnecting the radator fan realy
Check the ground condition with the LED lamp when pressing on the START key.
IS THERE LED GREEN LAMP(GROUND) LIGHTED ?
YES
Go to "Verification Vehicle Repair" procedure
NO
Replace a known - good ECM and recheck. if the LED green lamp is ON, replace the ECM.
YES
Go to "Verification Vehicle Repair" procedure
