Mitsubishi Galant 9G. Manual — part 266
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-140
STEP 4. Check the blower relay continuity.
Follow the table below to check the blower relay for continuity.
Q: Is the blower relay continuity in good condition?
YES : Go to Step 5.
NO : Replace the blower relay. The blower motor should
operate normally.
STEP 5. Measure the voltage at blower relay connector
C-202.
(1) Disconnect blower relay connector C-202, and measure the
voltage at the junction block side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 1 and ground.
• The measured value should be approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approx. 12 volts?
YES : Go to Step 7.
NO : Go to Step 6.
BATTERY
VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
4
− 5
Open circuit
• Connect
terminal 1 to the
positive battery
terminal
• Connect
terminal 3 to the
negative battery
terminal
4
− 5
Less than 2 ohms
AC306657
AB
4
5
1 2 3
5
1
4
3
BLOWER RELAY
AC305415BC
CONNECTOR: C-202
JUNCTION BLOCK SIDE
JUNCTION BLOCK
(FRONT VIEW)
AC209365
CONNECTOR C-202
(JUNCTION BLOCK SIDE)
GX
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-141
STEP 6. Check the wiring harness between blower relay
connector C-202 (terminal 1) and the 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
.
Q: Is the wiring harness between blower relay connector
C-202 (terminal 1) and the ignition switch (IG2) 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
.
NO : Repair the wiring harness. The blower motor should
operate normally.
AC305416
CONNECTORS: C-202, C-215
JUNCTION BLOCK
(FRONT VIEW)
C-215
HARNESS SIDE
C-215
JUNCTION BLOCK SIDE
C-202
C-202
AM
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-142
STEP 7. Measure the voltage at blower relay connector
C-202.
(1) Disconnect blower relay connector C-202, and measure the
voltage at the junction block side.
(2) Measure the voltage between terminal 5 and ground.
• The measured value should be approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approx. 12 volts?
YES : Go to Step 9.
NO : Go to Step 8.
AC305415BC
CONNECTOR: C-202
JUNCTION BLOCK SIDE
JUNCTION BLOCK
(FRONT VIEW)
AC209365GY
CONNECTOR C-202
(JUNCTION BLOCK SIDE)
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-143
STEP 8. Check the wiring harness between blower relay
connector C-202 (terminal 5) and fusible link (1).
NOTE: Also check intermediate connector C-29 and junction
block connector C-216 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If intermediate
connector C-29, junction block connector C-216 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 5) and fusible link (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
.
NO : Repair the wiring harness. The blower motor should
operate normally.
AC305231AI
CONNECTOR: C-29
AC305416
CONNECTORS: C-202, C-216
JUNCTION BLOCK
(FRONT VIEW)
HARNESS SIDE
JUNCTION BLOCK SIDE
C-202
C-202
C-216 (B)
C-216
AN
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