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ATC-38
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
How to Perform Trouble Diagnosis for Quick and Accurate RepairEJS003XF
WORK FLOW
SYMPTOM TABLE
*1AT C - 5 7 , "Operational Check (Front)"
or ATC-60, "
Operational Check
(Rear)" .
SHA9 00 E
Symptom Reference Page
A/C system does not come on. Go to Trouble Diagnosis Procedure for A/C System.AT C - 6 1
A/C system display is malfunctioning. Go to Navigation SystemAV- 6 1
A/C system cannot be controlled. Go to Self-diagnosis Function.AT C - 5 5
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.AT C - 6 4
Mode door motor is malfunctioning.
Discharge air temperature does not change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.AT C - 7 0
Air mix door motor is malfunctioning.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.AT C - 8 3
Intake door motor is malfunctioning.
Defroster door motor is malfunctioning. Go to Trouble Diagnosis Procedure for Defroster Door Motor.AT C - 8 7
Front blower motor operation is malfunction-
ing.Go to Trouble Diagnosis Procedure for Front Blower Motor.AT C - 9 3
Rear blower motor operation is malfunction-
ing.Go to Trouble Diagnosis Procedure for Rear Blower Motor.AT C - 1 0 1
Rear discharge air temperature and/or air
outlet does not change.Go to Trouble Diagnosis Procedure for Rear Air Control circuit.AT C -11 2
Magnet clutch does not engage. Go to Trouble Diagnosis Procedure for Magnet Clutch.AT C -11 5
Insufficient cooling Go to Trouble Diagnosis Procedure for Insufficient Cooling.AT C - 1 2 1
Insufficient heating Go to Trouble Diagnosis Procedure for Insufficient Heating.AT C - 1 2 8
Noise Go to Trouble Diagnosis Procedure for Noise.AT C - 1 2 9
Self-diagnosis cannot be performed. Go to Trouble Diagnosis Procedure for Self-diagnosis.AT C - 1 3 2
Memory function does not operate. Go to Trouble Diagnosis Procedure for Memory Function.AT C - 1 3 3
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TROUBLE DIAGNOSIS
ATC-39
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: October 20052005 QX56
Component Parts and Harness Connector LocationEJS003XG
ENGINE COMPARTMENT
WJIA1398E
Page 435 of 3419
ATC-40
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
FRONT PASSENGER COMPARTMENT
1. Front air control M49, M50 2. Rear blower switch (front) M52 3. In-vehicle sensor M32
4. Intake sensor M146 5. Intake door motor M58 6. Variable blower control M122
7. Air mix door motor (driver) M147 8. Mode door motor M142 9. Defroster door motor M144
10. Air mix door motor (passenger)
M14311. Optical sensor M402⇐: Front
WJIA1969E
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TROUBLE DIAGNOSIS
ATC-41
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: October 20052005 QX56
REAR PASSENGER COMPARTMENT
WJIA1345E
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ATC-42
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
SchematicEJS003XH
WJWA0235E
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TROUBLE DIAGNOSIS
ATC-43
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: October 20052005 QX56
Wiring Diagram — A/C,A —EJS003XI
WJWA0236E
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ATC-44
TROUBLE DIAGNOSIS
Revision: October 20052005 QX56
WJWA0237E
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TROUBLE DIAGNOSIS
ATC-45
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: October 20052005 QX56
WJWA0238E