Mitsubishi Montero (2002-2004). Manual — part 44
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-39
INSPECTION PROCEDURE 3: Rear Air Conditioning Outlet Air Temperature does not Increase
<Vehicles with Rear Cooler>
Air Thermo Sensor and Magnetic Valve Circuit
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-40
AC204170
CONNECTORS : D-01, D-30
CZ
D-01
D-30
AC204171
CONNECTOR : D-112
AU
AC204173
CONNECTORS : D-208, D-210
BF
D-208
D-210
AC204176
CONNECTORS : E-06, E-09, E-12
BJ
E-09
E-06
E-12
AC204175
CONNECTOR : E-17
AI
AC204179
CONNECTOR : G-13
AW
AC204698 AR
G-13-1
G-13-3
G-13-2
CONNECTORS : G-13-1, G-13-2, G-13-3
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-41
DIAGNOSIS
STEP 1. Check the rear cooler switch (temperature switch).
Connect the tester between the connector terminal number 3
and number 5, between the terminal number 5 and number 13
and make sure that the resistance value changes slowly within
the standard value.
Standard value: 0
− 3 kΩ
Q: Is the check result normal?
YES : Go to Step 2.
NO : Replace the rear air-conditioner switch.
STEP 2. Measure the resistance at rear cooler control unit
connector E-09.
(1) Disconnect rear cooler control unit connector E-09, and
measure at the wiring harness side.
(2) Turn the rear fan switch to the "ON" position.
(3) Turn the rear fan control switch to the "OFF" position.
(4) Measure the resistance between terminal 13 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 5.
NO : Go to Step 3.
AC205161
1
7
2
8
10 11
5
13
6
14
12
4
9
3
AC204176
CONNECTOR : E-09
AW
7
8
3
10 9
2
4
11
1312
5
14
6
1
HARNESS SIDE
AC204738
7
8
3
10 9
2
4
11
1312
5
14
6
1
CF
HARNESS SIDE : E-09
REAR AIR CONDITIONING DIAGNOSIS
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55A-42
STEP 3. Check rear cooler control unit connector E-09 and
rear fan control switch connector E-12 for damage.
Q: Is rear cooler control unit connector E-09 and rear fan
control switch connector E-12 in good condition?
YES : Go to Step 4.
NO : Repair or replace the connector. Refer to GROUP
00E, Harness Connector Inspection
that the air conditioning works normally.
STEP 4. Check the wiring harness between rear cooler
control unit connector E-09 (terminal 13) and rear fan
control switch connector E-12 (terminal 1).
NOTE: Also check intermediate connector E-06. If intermediate
connector E-06 is damaged, repair or replace the connector as
described in GROUP 00E, Harness Connector Inspection
.
Q: Is the wiring harness between rear cooler control unit
connector E-09 (terminal 13) and rear fan control switch
connector E-12 (terminal 1) in good condition?
YES : Check that the rear air conditioning works normally.
NO : Repair the wiring harness. Check that the rear air
conditioning works normally.
AC204194
CONNECTORS : E-09, E-12
AR
E-09
E-12
E-12
HARNESS SIDE
1
4
2
3
5
6
E-09 <VEHICLES WITH REAR COOLER>
HARNESS SIDE
7
8
3
10 9
2
4
11
1312
5
14
6
1
AC204194
CONNECTORS : E-06, E-09, E-12
AQ
E-06
E-06
E-09
E-12
E-12
HARNESS SIDE
1
4
2
3
5
6
E-09 <VEHICLES WITH REAR COOLER>
HARNESS SIDE
7
8
3
10 9
2
4
11
1312
5
14
6
1
22
2021
10
9
8
1718
6 7
19
1415
4 5
1112
1 2 3
13
16
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