Mitsubishi Montero (2004+). Manual — part 604
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-59
STEP 8. Check rear A/C control unit connector E-20 and air
mixing damper control motor and potentiometer connector
G-26-2 for damage.
Q: Is rear heater control unit connector E-20 and air mixing
damper control motor and potentiometer connector
G-26-2 in good condition?
YES : Go to Step 9.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the rear air conditioning works normally.
AC204176
CONNECTOR : E-20
AY
HARNESS SIDE
7
8
3
10 9
2
4
11
1312
5
14
6
1
AC204698
CONNECTOR : G-26-2
AK
HARNESS SIDE
7 6 5 4 3 2 1
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-60
STEP 9. Check the wiring harness between rear A/C
control unit connector E-20 (terminal 14, 6, 4, 7 and 8) and
air mixing damper control motor and potentiometer G-26-2
(terminal 2, 1, 5, 3 and 7).
AC204176
CONNECTOR : E-20
AY
HARNESS SIDE
7
8
3
10 9
2
4
11
1312
5
14
6
1
AC204699
CONNECTORS : G-26-1, G-26-2
AG
G-26-1
G-26-2
G-26-1
G-26-2
HARNESS SIDE
8
4
7
3
5
1
6
2
1
4
3
6 5
2
<VEHICLES WITH REAR AIR
CONDITIONING SYSTEM>
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-61
NOTE: Also check intermediate connectors G-26-1, D-112,
rear heater unit connectors G-26 and G-24. If intermediate con-
nector G-26-1, D-112, rear heater unit connector G-26 or G-24
is damaged, repair or replace the connector as described in
GROUP 00E, Harness Connector Inspection
Q: Is the wiring harness between rear A/C control unit
connector E-20 (terminal 14, 6, 4, 7 and 8) and air mixing
damper control motor and potentiometer G-26-2
(terminal 2, 1, 5, 3 and 7) in good condition?
YES : Go to Step 10.
NO : Repair the wiring harness. Check that the rear air
conditioning works normally.
AC204171 AL
CONNECTOR : D-112
2 3
27
32
28
33
16
15
4 5
19
18
29
17
34
7 8
35
22
21
9 10
30
36
31
37
25
24
23
6
20
1
14
26
11
13
12
38
AC204197
CONNECTORS : G-24, G-26
<VEHICLES WITH AIR
CONDITIONING SYSTEM>
AD
G-24
G-26
G-24
HARNESS SIDE
G-26
HARNESS SIDE
1
2
3
4
2
4 3
1
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-62
STEP 10. Measure the voltage at rear A/C unit connector
G-24.
(1) Disconnect rear A/C unit connector G-24, and measure the
voltage at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 2 and ground.
• The measured value should be approximately 12 volts
(battery positive voltage).
Q: Does the measured voltage correspond with this range?
YES : Go to Step 13.
NO : Go to Step 11.
STEP 11. Check rear A/C unit connector G-24 for damage.
Q: Is rear A/C unit connector G-24 in good condition?
YES : Go to Step 12.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the rear air conditioning works normally.
STEP 12. Check the wiring harness between rear A/C unit
connector G-24 (terminal 2) and the ignition switch (IG2).
AC204179
CONNECTOR : G-24
AQ
HARNESS SIDE
1
2
3
4
AC204738
HARNESS SIDE : G-24
CP
1
2
3
4
AC204179
CONNECTOR : G-24
AQ
HARNESS SIDE
1
2
3
4
AC204179
CONNECTOR : G-24
AQ
HARNESS SIDE
1
2
3
4
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