Mitsubishi 380. Manual — part 204
AUTO A/C DIAGNOSIS
HEATER, AIR CONDITIONING AND VENTILATION
55-112
STEP 4. Check choke coil connector D-11 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is choke coil connector D-11 in good condition?
YES : Go to Step 5.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
. The
defogger system should work normally.
25DB152A
CONNECTORS: D-11
D-11
AUTO A/C DIAGNOSIS
HEATER, AIR CONDITIONING AND VENTILATION
55-113
STEP 5.Measure the voltage at choke coil connector D-11.
(1) Disconnect connector D-11, 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-11
terminal No.1 and ground.
• The measured value should be approximately 12 volts.
Q: Is the measured voltage approx. 12 volts?
YES : Go to Step 13.
NO : Go to Step 6.
25DB152A
CONNECTORS: D-11
D-11
AC306911
AC306911
CONNECTOR C-15
(HARNESS SIDE)
AC
25DB120A
CONNECTOR: C-15
C-105 (B)
HARNESS SIDE
25DB153A
CONNECTOR
D-11
AUTO A/C DIAGNOSIS
HEATER, AIR CONDITIONING AND VENTILATION
55-114
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.
25DB125A
CONNECTOR: C-201
JUNCTION BLOCK SIDE
JUNCTION BLOCK
(FRONT VIEW)
AC209365
CONNECTOR C-201
(JUNCTION BLOCK SIDE)
HA
AUTO A/C DIAGNOSIS
HEATER, AIR CONDITIONING AND VENTILATION
55-115
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-31 and junction
block connector C-216 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If intermediate
connector C-31 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.
25DB150A
CONNECTOR: C-31
25DB127A
CONNECTORS: C-201, C-216
JUNCTION BLOCK
(FRONT VIEW)
HARNESS SIDE
C-201
C-216 (B)
C-216
C-201
JUNCTION BLOCK SIDE
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