Mitsubishi Galant 9G. Manual — part 289
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-232
STEP 5. Measure the voltage at choke coil connector D-14.
(1) Disconnect choke coil connector D-14, and measure the
voltage at the harness side.
(2) Disconnect A/C-ECU connector C-15 and ground harness
side terminal No.27.
(3) Turn the ignition switch to the "ON" position.
(4) Measure the voltage between choke coil connector D-14
terminal No.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 13.
NO : Go to Step 6.
AC305268
CONNECTOR: D-14
AJ
HARNESS SIDE
AC305233
CONNECTOR: C-15
BG
C-105 (B)
HARNESS SIDE
AC306911
AC306911
CONNECTOR C-15
(HARNESS SIDE)
AC
AC209365GZ
CONNECTOR D-14
(HARNESS SIDE)
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-233
STEP 6. Measure the voltage at defogger relay connector
C-201.
(1) Disconnect defogger relay connector C-201, 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 8.
NO : Go to Step 7.
AC305415BE
CONNECTOR: C-201
JUNCTION BLOCK SIDE
JUNCTION BLOCK
(FRONT VIEW)
AC209365
CONNECTOR C-201
(JUNCTION BLOCK SIDE)
HA
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-234
STEP 7. Check the wiring harness between defogger relay
connector C-201 (terminal 5) and the 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 and junction block connector C-216 is dam-
aged, repair or replace the connector as described in GROUP
00E, Harness Connector Inspection
.
Q: Is the wiring harness between defogger relay connector
C-201(terminal 5) and the 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. Check that the defogger
system works normally.
AC305231AI
CONNECTOR: C-29
AC305416
CONNECTORS: C-201, C-216
JUNCTION BLOCK
(FRONT VIEW)
HARNESS SIDE
C-201
C-216 (B)
C-216
C-201
JUNCTION BLOCK SIDE
AP
MANUAL A/C DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-235
STEP 8. Measure the voltage at defogger relay connector
C-201.
(1) Disconnect defogger relay connector C-201, 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 10.
NO : Go to Step 9.
STEP 9. Check the wiring harness between defogger relay
connector C-201 (terminal 1) and ignition switch (IG2).
AC305415BE
CONNECTOR: C-201
JUNCTION BLOCK SIDE
JUNCTION BLOCK
(FRONT VIEW)
AC209365HB
CONNECTOR C-201
(JUNCTION BLOCK SIDE)
AC305416
CONNECTORS: C-201, C-215
JUNCTION BLOCK
(FRONT VIEW)
HARNESS SIDE
C-201
JUNCTION BLOCK SIDE
C-201
C-215
C-215
AQ
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