Mitsubishi Lancer Evolution IX. Manual - part 543

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-45

STEP 7. Measure the voltage at C-216 blower 
relay connector.

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

block side.

(2) Voltage between terminal 5 and body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Go to Step 8.

STEP 8. Connector check: C-216 blower relay 
connector

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the connector.

AC504692AB

Connector: C-216 <LHD>

Junction block side

Junction block (Front view)

AC504694AB

Junction block (Front view)

Connector: C-216 <RHD>

Junction block side

AC301541KA

Connector C-216
(Junction block side)

AC504692AB

Connector: C-216 <LHD>

Junction block side

Junction block (Front view)

AC504694AB

Junction block (Front view)

Connector: C-216 <RHD>

Junction block side

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-46

STEP 9. Check the wiring harness between C-216 
blower relay connector terminal No.5 and fusible 
link (1).

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connectors C-126 and junction block connector 
C-212, and repair if necessary.

• Check the blower relay 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.

AC504633AD

Connectors: C-212, C-216 <LHD>

Harness side

Junction block (Front view)

Junction block side

C-212

C-216

C-216

C-212 (B)

AC504635AD

Harness side

Junction block (Front view)

Junction block side

C-212

C-216

C-212 (B)

C-216

Connectors: C-212, C-216 <RHD>

AC504622AH

Connector: C-126 <LHD>

Harness side

AC504618AN

Connector: C-126 <RHD>

Harness side

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-47

STEP 10. Resistance measurement at C-216 
blower relay connector.

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

block side.

(2) Measure the resistance between terminal 3 and 

body earth

OK: 2

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 13.

NO : 

Go to Step 11.

STEP 11. Connector check: C-216 blower relay 
connector

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the connector.

AC504692AB

Connector: C-216 <LHD>

Junction block side

Junction block (Front view)

AC504694AB

Junction block (Front view)

Connector: C-216 <RHD>

Junction block side

AC301541KB

Connector C-216
(Junction block side)

AC504692AB

Connector: C-216 <LHD>

Junction block side

Junction block (Front view)

AC504694AB

Junction block (Front view)

Connector: C-216 <RHD>

Junction block side

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55-48

STEP 12. Check the wiring harness between 
C-216 blower relay connector terminal No.3 and 
body earth.

NOTE: Prior to the wiring harness inspection, check 
junction block connector C-214 and joint connector 
C-36 <RH drive vehicles>, and repair if necessary.

• Check the blower relay earth wires for open cir-

cuit.

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.

AC504633AE

Connectors: C-214, C-216 <LHD>

Harness side

Junction block (Front view)

C-214

C-216

C-216

C-214

Junction block side

AC504635AE

Harness side

Junction block (Front view)

Junction block side

C-216

C-214

C-216

C-214

Connector: C-214, C-216 <RHD>

AC504618AJ

Connector: C-36 <RHD>

Harness side

C-36 (B)