Mitsubishi Galant (2004+). Manual — part 752
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-147
STEP 9. Measure the resistance at blower relay connector
C-202.
(1) Disconnect blower relay connector C-202, and measure the
resistance at the wiring harness side.
(2) Measure the resistance value between terminal 3 and
ground.
• The measured value should be 2 ohms or less.
Q: Does the measured resistance value correspond with
this range?
YES : Go to Step 11.
NO : Go to Step 10.
STEP 10. Check the wiring harness between blower relay
connector C-202 (terminal 3) and ground.
AC305415BC
CONNECTOR: C-202
JUNCTION BLOCK SIDE
JUNCTION BLOCK
(FRONT VIEW)
AC209364
CONNECTOR C-202
(JUNCTION BLOCK SIDE)
IS
AC305416
CONNECTORS: C-202, C-211
JUNCTION BLOCK
(FRONT VIEW)
JUNCTION BLOCK SIDE
C-202
C-202
AO
HARNESS SIDE
C-211
C-211
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-148
NOTE: Also check junction block connector C-211 and joint
connector C-03 for loose, corroded, or damaged terminals, or
terminals pushed back in the connector. If junction block con-
nector C-211 and joint connector C-03 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between blower relay connector
C-202 (terminal 3) and ground in good condition?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
NO : Repair the wiring harness. The blower motor should
operate normally.
STEP 11. Check blower switch connector C-14 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is blower switch connector C-14 in good condition?
YES : Go to Step 12.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
.The
blower motor should operate normally.
STEP 12. Check the blower switch continuity.
Follow the table below to check the blower switch for continuity.
Q: Is the blower switch continuity in good condition?
YES : Go to Step 13.
NO : Replace the blower switch. The blower motor should
operate normally.
AC305231BP
CONNECTOR: C-03
AC305233
HARNESS SIDE
BO
CONNECTOR: C-14
SWITCH
POSITION
TESTER CONNECTION
(CONNECTOR A)
SPECIFIED
CONDITION
0 (OFF)
1
− 4, 2− 4, 4 − 5, 4 − 6
Open circuit
1 (LO)
1
− 4
Less than 2 ohms
2 (ML)
4
− 6
Less than 2 ohms
3 (MH)
2
− 4
Less than 2 ohms
4 (HI)
4
− 5
Less than 2 ohms
AC306526
1
3 4 5 6
2
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-149
STEP 13. Check the wiring harness between blower motor
connector C-115 (terminal 1) and blower switch connector
C-14 (terminal 5).
Q: Is the wiring harness between blower motor connector
C-115 (terminal 1) and blower relay connector C-14
(terminal 5) in good condition?
YES : Go to Step 14.
NO : Repair the wiring harness. The blower motor should
operate normally.
AC305233
HARNESS SIDE
BO
CONNECTOR: C-14
AC305233BN
CONNECTOR: C-115
HARNESS SIDE
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-150
STEP 14. Check the wiring harness between blower switch
connector C-14 (terminal 4) and blower relay connector
C-202 (terminal 4).
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
.
Q: Is the wiring harness between blower switch connector
C-14 (terminal 4) and blower relay connector C-202
(terminal 4) in good condition?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
NO : Repair the wiring harness. The blower motor should
operate normally.
AC305233
HARNESS SIDE
BO
CONNECTOR: C-14
AC305416
CONNECTORS: C-202, C-215
JUNCTION BLOCK
(FRONT VIEW)
C-215
HARNESS SIDE
C-215
JUNCTION BLOCK SIDE
C-202
C-202
AM
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