2007 INFINITI M35 Factory Service Manual

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Page 505 of 4647

INFINITI M35 2007 Factory Service Manual ATC-54
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Auto Amp. Terminals and Reference ValueNJS000GI
Measure voltage between each terminal and ground by referring ter-
minals and reference value

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INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
ATC-55
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Revision: 2007 April2007 M35/M45
65 OECV (Electric Control Valve)
signalONSelf-diagnosis. STEP-4
(Code No. 45)
69 R A/C LAN signal ON —
70 WPowe

Page 507 of 4647

INFINITI M35 2007 Factory Service Manual ATC-56
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Self-diagnosis FunctionNJS000GJ
DESCRIPTION
The self-diagnosis system diagnoses sensors, door motors, blower motor, etc. by system line. Refer

Page 508 of 4647

INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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Revision: 2007 April2007 M35/M45
FUNCTION CONFIRMATION PROCEDURE
1. SET IN SELF-DIAGNOSIS MODE
1. Turn ignition switch ON.
2. Set in self-diagnosis

Page 509 of 4647

INFINITI M35 2007 Factory Service Manual ATC-58
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
6. STEP-4: OPERATION OF EACH DOOR MOTOR IS CHECKED
1. Press temperature control (UP) switch (driver side).
2. Press (DEF) switch. Code No. o

Page 510 of 4647

INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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Revision: 2007 April2007 M35/M45
Checks must be made visually, by listening the sound, or by touching air outlets with hand, etc. for improper
oper

TROUBLE DIAGNOSIS
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Checks must be made visually, by listening the sound, or by touching air outlets with hand, etc. for improper
operation.
*1: FOOT position during automatic control. Refer to AT C - 6 4 , "
AUXILIARY MECHANISM: FOOT POSITION
SETTING TRIMMER" .
OK or NG
OK >> GO TO 8.
NG >>
Air outlet does not change.
Go to Mode Door Motor Circuit. Refer to AT C - 7 6 , "
Mode Door Motor Circuit" .
Upper ventilator outlet does not change.
Go to Upper Ventilator Door Motor Circuit. Refer to AT C - 7 9 , "
Upper Ventilator Door Motor Cir-
cuit" .
Intake door does not change.
Go to Intake Door Motor Circuit. Refer to AT C - 8 5 , "
Intake Door Motor Circuit" .
Discharge air temperature does not change.
Go to Air Mix Door Motor Circuit. Refer to AT C - 8 2 , "
Air Mix Door Motor Circuit" .
Blower motor operation is malfunctioning.
Go to Blower Motor Circuit. Refer to AT C - 8 8 , "
Blower Motor Circuit" .
Magnet clutch does not engage.
Go to Magnet Clutch Circuit. Refer to AT C - 9 3 , "
Magnet Clutch Circuit" .
8. STEP-5: TEMPERATURE OF EACH SENSOR IS CHECKED
1. Press temperature control (UP) switch (driver side).
2. Code No. 51 appears on the display.
>> GO TO 9.
9. CHECK AMBIENT SENSOR
Press (DEF) switch one time. Temperature detected by ambient
sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 10.
NG >> Go to Ambient Sensor Circuit. Refer to AT C - 11 2 , "
Ambi-
ent Sensor Circuit" .
10. CHECK IN-VEHICLE SENSOR
Press (DEF) switch for the second time. Temperature detected
by in-vehicle sensor is indicated on the display.
NOTE:
If the temperature indicated on the display greatly differs from the
actual temperature, check sensor circuit first, and then check sensor.
OK or NG
OK >> GO TO 11.
NG >> Go to In-vehicle Sensor Circuit. Refer to AT C - 11 5 , "
In-
vehicle Sensor Circuit" .
PJIA0151E
PJIA0152E

Page 511 of 4647

INFINITI M35 2007 Factory Service Manual ATC-60
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
11 . CHECK INTAKE SENSOR
Press (DEF) switch for the third time. Temperature detected by
intake sensor is indicated on the display.
NOTE:
If

Page 512 of 4647

INFINITI M35 2007 Factory Service Manual TROUBLE DIAGNOSIS
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13. CHECK MALFUNCTIONING SENSOR AND DOOR MOTOR
Refer to the following chart for malfunctioning code No.
(If two or

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