Mitsubishi Lancer Evolution IX. Manual - part 554

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-89

STEP 3. Connector check: A-07X condenser fan 
relay (HI) connector

Q:  Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector.

STEP 4. Check the condenser fan relay (HI) 
continuity.
Refer to 

P.55-107

.

Q: Is the condenser fan relay (HI) in good condition?

YES : 

Go to Step 5.

NO : 

Replace the condenser fan relay (HI).

STEP 5. Voltage measurement at A-07X 
condenser fan relay (HI) connector.

(1) Remove the relay, and measure at the relay box 

side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 2 and 

body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

 Go to Step 7.

NO  : 

 Go to Step 6.

AC311017AB

Connector: A-07X

Relay box side

AC311017AB

Connector: A-07X

Relay box side

AC310507AJ

Connector: A-07X
(Relay box side)

1

3

2

4

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-90

STEP 6. Check the wiring harness between A-07X 
condenser fan relay (HI) connector terminal No.2 
and the ignition switch (IG2).

NOTE: 

AC311017AB

Connector: A-07X

Relay box side

AC310447

AG

Connectors: C-101, C-129 <LHD>

C-101 (L)

C-129

C-129

C-101

AC310456

Connector: C-101 <RHD>

AQ

C-101 (L)

AC310454

Connector: C-129 <RHD>

AV

AC310449

Connectors: C-210, C-211 <LHD>

AF

C-210

C-211

Junction block (front view)

C-210

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

C-211

Harness side

4

6 5

3

2

1

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-91

Prior to the wiring harness inspection, check interme-
diate connector C-129, joint connector C-101, junc-
tion block connectors C-210 and C-211, and repair if 
necessary.

• Check the condenser fan relay (HI) power supply 

line for open circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to 
Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Repair the wiring harness.

STEP 7. Voltage measurement at A-07X 
condenser fan relay (HI) connector.

(1) Remove the relay, and measure at the relay box 

side.

(2) Measure the voltage between terminal 4 and 

body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

 Go to Step 9.

NO  : 

 Go to Step 8.

AC310459

Connectors: C-210, C-211 <RHD>

AF

C-210

C-211

Junction block (front view)

C-210

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

C-211

Harness side

4

6 5

3

2

1

AC311017AB

Connector: A-07X

Relay box side

AC310507AK

Connector: A-07X
(Relay box side)

1

3

2

4

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-92

STEP 8. Check the wiring harness between A-07X 
condenser fan relay (HI) connector terminal No.4 
and the battery.

• Check the condenser fan relay (HI) power supply 

line for open circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to 
Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Repair the wiring harness.

STEP 9. Check the wiring harness between A-07X 
condenser fan relay (HI) connector terminal No.3 
and C-121 engine-ECU connector terminal No.30.

AC311017AB

Connector: A-07X

Relay box side

AC311017AB

Connector: A-07X

Relay box side

AC504617AB

Connector: C-121 <LHD>

C-121 (GR)

Harness side

AC504624AT

Connectors: C-31, C-121 <RHD>

C-121

Harness side

C-121 (GR)

C-31

C-31