2007 INFINITI M35 Factory Service Manual

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INFINITI M35 2007  Factory Service Manual ATC-86
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
Unified meter and A/C amp.
Intake door motor (LCU)
A/C LAN sy

Page 538 of 4647

INFINITI M35 2007  Factory Service Manual TROUBLE DIAGNOSIS
ATC-87
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
COMPONENT DESCRIPTION
Intake Door Motor
The intake door motor is attached to the blower unit. It rotates so that
a

Page 539 of 4647

INFINITI M35 2007  Factory Service Manual ATC-88
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Blower Motor CircuitNJS000GT
SYMPTOM: Blower motor operation is malfunctioning.
INSPECTION FLOW
*1AT C - 6 5 ,  "Operational Check"*2ATC-121,

Page 540 of 4647

INFINITI M35 2007  Factory Service Manual TROUBLE DIAGNOSIS
ATC-89
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
SYSTEM DESCRIPTION
Component Parts
Fan speed control system components are:
Unified meter and A/C amp.
A/C LAN s

Page 541 of 4647

INFINITI M35 2007  Factory Service Manual ATC-90
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Starting Fan Speed Control
Start up from COLD SOAK Condition (Automatic mode)
In a cold start up condition where the engine coolant temperatur

Page 542 of 4647

INFINITI M35 2007  Factory Service Manual TROUBLE DIAGNOSIS
ATC-91
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
1. CHECK POWER SUPPLY FOR BLOWER MOTOR
1. Disconnect blower motor connector.
2. Turn ignition switch ON.
3. Check

Page 543 of 4647

INFINITI M35 2007  Factory Service Manual ATC-92
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
4. CHECK UNIFIED METER AND A/C AMP. OUTPUT SIGNAL
1. Reconnect blower motor connector and unified meter and A/C
amp. connector.
2. Turn igniti

Page 544 of 4647

INFINITI M35 2007  Factory Service Manual TROUBLE DIAGNOSIS
ATC-93
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2007 April2007 M35/M45
Magnet Clutch CircuitNJS000GU
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
*1ATC-121, "Intake Sensor Ci