Mitsubishi Galant 9G. Manual — part 272

MANUAL A/C DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-164

STEP 9. Check the wiring harness between defogger relay
connector C-201 (terminal 1) and ignition switch (IG2).

NOTE: Also check junction block connector C-215 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-215 is damaged,
repair or replace the connector as described in GROUP 00E,
Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between defogger relay connector

C-201 (terminal 1) and ignition switch (IG2) in good
condition?
YES : Check that the defogger system works normally.
NO : Repair the wiring harness. Check that the defogger

system works normally.

STEP 10. Check A/C-ECU connector C-09 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is A/C-ECU connector C-09 in good condition?

YES : Go to Step 11.
NO : Repair or replace the connector. Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

. Check

that the defogger system works normally.

AC305416

CONNECTORS: C-201, C-215

JUNCTION BLOCK
(FRONT VIEW)

HARNESS SIDE

C-201

JUNCTION BLOCK SIDE

C-201

C-215

C-215

AQ

AC305233

C-09 (B)

HARNESS SIDE

21

22

23

24

25

26

27

28

29

30

31

32

BB

CONNECTOR: C-09

MANUAL A/C DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-165

STEP 11. Check the wiring harness between defogger relay
connector C-201 (terminal 3) and A/C-ECU connector C-09
(terminal 27).
NOTE: Also check junction block connector C-211 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-211 is damaged,
repair or replace the connector as described in GROUP 00E,
Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between defogger relay connector

C-201 (terminal 3) and A/C-ECU connector C-09
(terminal 27) in good condition?
YES : Go to Step 12.
NO : Repair or replace the wiring harness. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

. Check that the defogger system works

normally.

AC305233

C-09 (B)

HARNESS SIDE

21

22

23

24

25

26

27

28

29

30

31

32

BB

CONNECTOR: C-09

AC305416

CONNECTORS: C-201, C-211

JUNCTION BLOCK
(FRONT VIEW)

HARNESS SIDE

C-201

JUNCTION BLOCK SIDE

C-201

C-211

C-211

AR

MANUAL A/C DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-166

STEP 12. Check the wiring harness between defogger
relay connector C-201 (terminal 4) and choke coil
connector D-14 (terminal 1).
NOTE: Also check junction block connector C-204 for loose,
corroded, or damaged terminals, or terminals pushed back in
the connector. If junction block connector C-204 is damaged,
repair or replace the connector as described in GROUP 00E,
Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between defogger relay connector

C-201 (terminal 4) and choke coil connector D-14
(terminal 1) in good condition?
YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-14

.

NO : Repair or replace the wiring harness. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

. Check that the defogger system works

normally.

AC305416

CONNECTORS: C-201, C-204

JUNCTION BLOCK
(FRONT VIEW)

HARNESS SIDE

C-201

JUNCTION BLOCK SIDE

C-201

C-204

C-204

AS

AC305268

CONNECTOR: D-14

AJ

HARNESS SIDE

MANUAL A/C DIAGNOSIS

TSB Revision

HEATER, AIR CONDITIONING AND VENTILATION

55A-167

STEP 13. Check defogger connector D-11 and choke coil
connector D-13 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Q: Are defogger connector D-11 and choke coil connector

D-13 in good condition?
YES : Go to Step 14.
NO : Repair or replace the connector. Refer to GROUP

00E, Harness Connector Inspection

P.00E-2

. Check

that the defogger system works normally.

STEP 14. Check the wiring harness between defogger
connector D-11 (terminal 1) and choke coil connector D-13
(terminal 2).
Q: Is the wiring harness between defogger connector D-11

(terminal 1) and choke coil connector D-13 (terminal 2)
in good condition?
YES : Go to Step 15.
NO : Repair or replace the wiring harness. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

. Check that the defogger system works

normally.

AC305269

CONNECTORS: D-11, D-13

D-11

D-13

HARNESS SIDE

D-11

HARNESS SIDE

D-13

AB

AC305269

CONNECTORS: D-11, D-13

D-11

D-13

HARNESS SIDE

D-11

HARNESS SIDE

D-13

AB