Mitsubishi Outlander XL. Manual - part 409

INSPECTION PROCEDURE 25: A/C system.

M11310100309USA0000010000

1

ZK602874

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

1

2

3
4

1

10 111213 14 1516 17 1819 20

2 3 4

5 6 7 8 9

WHITE

WHITE

7

10A

ORANGE

A/C COMPRESSOR
REL AY

REL AY B OX
(ENGINE COM PARTMENT )

4

2

1

A-16X

B-17

MU802653

A-13

OFF

A/C
REFRIGERANT 
TEMPER ATURE  
SWITCH

A/C COMPRESSOR ASSEMB

LY

A/C
COMPRESSOR
CLUTCH

A/C COMPRESSOR RELAY CIRCUIT

102

AA00

B-11

ENGINE
CONTROL
MODULE

LIGHT GREEN

LIGHT GREEN

3

1

5

OFF

ON

ON

FUSIBLE LINK 

36

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-831

SYMPTOM PROCEDURES

ZK603592

ECM

B-11 (GR)

Connector: B-11

AA00

ZK603650AA00

A-13

Connector: A-13

ZK603643 AA00

B-17 (B)

Connector: B-17 (B)

ZK603642

A/C compressor relay

A-16X

Connector: A-16X

AA00

 

CIRCUIT OPERATION

｠

When  the  A/C  switch  ON  signal  is  input  into  the
ECM, the ECM turns ON the A/C compressor relay.
This causes battery positive voltage to be supplied
to  the  A/C  compressor  and  the  magnet  latch
actuates.

COMMENT

｠

When  the  A/C  is  "ON"  the  ECM  turns  "ON"  the
power transistor in the ECM. The ECM delays A/C
engagement momentarily while it increases idle r/

min. Then the A/C compressor clutch relay coil will
be energized.
With  this,  the  A/C  compressor  clutch  relay  turns
"ON", and the A/C compressor clutch operates.

TROUBLESHOOTING HINTS (The most likely
causes for this case: )

｠

Malfunction of the A/C control system.

｠

Improper connector contact, open circuit or short-
circuited harness wire.

｠

Malfunction of the ECM.

 

DIAGNOSIS

13Ab-832

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

SYMPTOM PROCEDURES

STEP 1. Using scan tool MB991958, check data list item.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Turn the ignition switch to the "ON" position.

(3)

Check the following items in the data List.
Refer to Data List Reference Table P.13Ab-837.

a
.

Item 93: A/C compressor relay.

(4)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Are they operating properly?

YES:

 Go to Step 2.

NO:

 Repair or replace it. Then confirm that the

malfunction symptom is eliminated.

STEP 2. Check the circuit at ECM connector B-11.

(1)

Disconnect the connectors B-11 and measure at the harness
side.

(2)

Turn the ignition switch to the "ON" position.

82 81 80 79 78 77 76 75 74 73 72 71

94 93 92 91 90 89 88 87 86 85 84 83

99 98 97 96 95

100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

ZK603208AA00

B-11 harness
connector:
component side 

(3)

Measure the voltage between terminal No. 102 and ground.

｠

Voltage should be battery positive voltage.

(4)

Using a jumper wire, connect terminal No. 102 to ground.

｠

A/C compressor clutch relay should turn "ON".

(5)

Turn the ignition switch to the "LOCK" (OFF) position.

Q:Is  the  voltage  and  A/C  compressor  relay  condition

normal?

YES:

 Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8.

NO:

 Refer to GROUP 55A, Manual A/C Diagnosis - Heater,

Air Conditioning and Ventilation Diagnostic
Troubleshooting Strategy P.55A-5, or GROUP 55B, Auto
A/C Diagnosis - Automatic A/C Troubleshooting Strategy P.
55B-4.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-833

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 26: Engine oil pressure switch System.

M11310100331USA0000010000

ZK602875

1

2

3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

1

ENGINE
CONTROL
MODULE

36

GRA

Y

ENGINE OIL
PRESSURE
SWITCH

B-16

1

ENGINE OIL PRESSURE SWITCH CIRCUIT

AA00

B-10

OFF

ON

ZK603644AA00

Connector: B-16

B-16

Engine oil
pressure switch

ZK603591

ECM

B-10 (GR)

Connector: B-10

AA00

 

CIRCUIT OPERATION

｠

Battery voltage is applied to the oil pressure switch
(terminal No. 1) from the engine-ECU (terminal No.
36).

COMMENT

｠

Detect the engine oil pressure conditions and enter
the result into the ECM. After starting the engine if
the  oil  pressure  rises  to  higher  than  the  given
pressure, the engine oil pressure switch turns OFF.

Under this condition the ECM sends the command
of turning off the oil warning lamp to the combination
meter via CAN.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

｠

Engine oil pressure switch failed.

｠

Improper connector contact, open circuit or short-
circuit harness wire.

｠

ECM failed.

 

13Ab-834

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

SYMPTOM PROCEDURES