Terminal and Connector Inspection
Check for Wiring Harness
1.

Check for damaged harness and terminals including rubber seals :

-. contact resistance, oxidation, corrosion, bent or broken terminals

-. harness connector connection, loose wires etc.

2.

Check for poor connection between ECM and component :

-. backed out terminal, improper mating, broken locks and poor terminal to wire connection

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

Signal Circuit Inspection
Problem Verification
1.

DTCs listed below are stored in the scan tool

P1625/C018_C019

2.

Check items with the scan tool and the multimeter

① Wiring harness inspection

② Check the fuse

③ Check the relay resistance

3.

Specification

1)

Resitance : below 1 Ω for open in the wire

2)

Resitance : infinite for short to ground in the wire

3)

Voltage : below 0.5V for short to power in the wire

note

Refer to the component and full circuit for connector configrations details

C018 : Radiator cooling fan - Short Circuit
4.

Start the engine and measure the voltage at the ECM terminal 20/C230-1.

5.

IS THERE A BATTERY VOLTAGE ?

YES

a.

Go to step 3

NO

a.

Repair short in the wire between the radiator fan relay terminal 1 and the radiator fuse (40A)

b.

Repair short in the wire between the radiator fan relay terminal 5 and the ECM No.3 fuse (10A)

c.

Repair short in the wire between the radiator fan relay terminal 3 and the ECM terminal 20/C230-1.

d.

Replace the fuse if the fuse is broken

e.

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

f.

Go to step 3

6.

Connect the scan tool to the data link connector(DLC) and trun the ignition switch ON.

7.

Go to the actuation test for driving the condensor fan relay .

8.

Press on the START key

9.

IS THERE THE CONDENSOR FAN WITH THE CONDENSOR FAN RELAY ON OPERATED ?

YES

a.

Go to "Verification Vehicle Repair" procedure

NO

a.

Recheck the fuse and the condensor fan relay

b.

Recheck the wiring harness

c.

Go to step 7

10.

Connect the LED lamp at the terminal 2 for the condensor fan relay No.1 and the terminal 4 for the condensor fan realy No.2 after disconnecting the condensor fan realy No.1 and No.2 individually.

11.

Check the ground condition with the LED lamp when pressing on the START key.

12.

IS THERE LED GREEN LAMP(GROUND) LIGHTED ?

YES

a.

Go to "Verification Vehicle Repair" procedure

NO

a.

Replace a known - good ECM and recheck. if the LED green lamp is ON, replace the ECM.

YES

a.

Go to "Verification Vehicle Repair" procedure

C019 : A/C Condensor Fan - Open or Short Circuit
13.

Turn the ignition switch ON, and measure the voltage at the ECM terminal 19/C230-1.

14.

IS THERE A BATTERY VOLTAGE ?

YES

a.

Go to step 3

NO

a.

Repair open or short in the wire between the condensor fan relay No.1 terminal 1 and the ECM No. 3 fuse (10A)

b.

Repair open or short in the wire between the condensor fan relay No.1 terminal 5 and the condensor fuse (20A)

c.

Repair open or short in the wire between the condensor fan relay No.2 terminal 2 and the ECM No. 3 fuse (10A)

d.

Repair open or short in the wire between the condensor fan relay No.1 terminal 3 and the condensor fan relay No. 2 terminal 3

e.

Repair open or short in the wire between the condensor fan relay No.1 terminal 2 with the condensor fan relay No. 2 terminal 4 and the ECM terminal 19/C230-1

f.

Replace the fuse if the fuse is broken

g.

Replace the relay if the relay is defective after checking the continuity between the relay terminal 1 and terminal 2 for the condensor fan relay No. 1

h.

Replace the relay if the relay is defective after checking the continuity between the relay terminal 2 and terminal 4 for the condensor fan relay No. 2. For more detailed information, Go to "Component Inspection" procedure

i.

Go to step 3

15.

Connect the scan tool to the data link connector(DLC) and trun the ignition switch ON.

16.

Go to the actuation test for driving the condensor fan relay .

17.

Press on the START key

18.

IS THERE THE CONDENSOR FAN WITH THE CONDENSOR FAN RELAY ON OPERATED ?

YES

a.

Go to "Verification of Vehicle Repair" procedure

NO

a.

Recheck the fuse and the radiator fan relay

b.

Recheck the wiring harness

c.

Go to step 7

19.

Connect the LED lamp at the terminal 2 for the condensor fan relay No.1 and the terminal 4 for the condensor fan realy No.2 after disconnecting the condensor fan realy No.1 and No.2 individually.

20.

Check the ground condition with the LED lamp when pressing on the START key.

21.

IS THERE LED GREEN LAMP(GROUND) LIGHTED ?

YES

a.

Go to "Verification of Vehicle Repair" procedure

NO

a.

Replace a known - good ECM and recheck. if the LED green lamp is ON, replace the ECM

YES

a.

Go to "Verification of Vehicle Repair" procedure

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