Infiniti M45 (Y34). Manual — part 142
TROUBLE DIAGNOSIS
ATC-53
C
D
E
F
G
H
I
K
L
M
A
B
ATC
9.
STEP-5: TEMPERATURE OF EACH SENSOR IS CHECKED
1.
Turn the temperature dial (driver side) clockwise.
2.
Code No. 51 appears on the display.
>> GO TO 10.
10.
CHECK AMBIENT SENSOR
Press
(DEF) switch one time, temperature detected by ambient
sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual tempera-
ture, check sensor circuit first, then inspect sensor.
OK or NG
OK
>> GO TO 11.
NG
>> Go to Ambient Sensor Circuit. Refer to
11.
CHECK IN-VEHICLE SENSOR
Press
(DEF) switch the second time, temperature detected by in-
vehicle sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual tempera-
ture, check sensor circuit first, then inspect sensor.
OK or NG
OK
>> GO TO 12.
NG
>> Go to In-Vehicle Sensor Circuit. Refer to
12.
CHECK INTAKE SENSOR
Press
(DEF) switch the third time, temperature detected by intake
sensor is indicated on the display.
NOTE:
If temperature shown on display greatly differs from actual tempera-
ture, check sensor circuit first, then inspect sensor.
OK or NG
OK
>> GO TO 13.
NG
>> Go to Intake Sensor Circuit. Refer to
RJIA0223E
RJIA1271E
RJIA1272E
ATC-54
TROUBLE DIAGNOSIS
13.
CHECK MULTIPLEX COMMUNICATION ERROR
1.
Press intake switch.
2.
Multiplex communication error between AV C/U (AV and NAVI
C/U) and auto amp. is detected.
(If plural errors occur, the display of each error will blink two
times for 0.5 second intervals.)
3.
Is multiplex communication error detected as self-diagnosis
results?
YES or NO
YES
>> Go to Multiplex Communication Circuit. Refer to
111, "Multiplex Communication Circuit"
NO
>> 1. Turn ignition switch OFF or AUTO switch ON.
2. INSPECTION END
14.
CHECK MALFUNCTIONING SENSOR
Refer to the following chart for malfunctioning code No.
(If two or more sensors malfunction, corresponding code Nos. blink respectively two times.)
*1:Conduct self-diagnosis STEP-2 under sunshine.
When conducting indoors, aim a light (more than 60W) at sunload sensor, otherwise code No. 25 will indicate
despite that sunload sensor is functioning properly.
*2:
ATC-101, "DIAGNOSTIC PROCEDURE FOR AMBIENT SENSOR"
.
*3:
ATC-104, "DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR"
.
*4:
ATC-109, "DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR"
*5:
ATC-106, "DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR"
.
*6:
ATC-62, "DIAGNOSTIC PROCEDURE FOR LAN CIRCUIT"
.
>> INSPECTION END
RJIA1273E
Code No.
Malfunctioning sensor (Including circuits)
Reference page
21 / -21
Ambient sensor
*2
22 / -22
In-vehicle sensor
*3
24 / -24
Intake sensor
*4
25 / -25
Sunload sensor
*5
26 / -26
Air mix door motor (LCU) PBR (Driver side)
*6
27 / -27
Air mix door motor (LCU) PBR (Passenger side)
*6
RJIA0227E
TROUBLE DIAGNOSIS
ATC-55
C
D
E
F
G
H
I
K
L
M
A
B
ATC
15.
CHECK MALFUNCTIONING DOOR MOTOR POSITION SWITCH
Mode and/or intake door motor PBR(s) is/are malfunctioning.
(If two or more mode or intake doors are out of order, corresponding code numbers blink respectively twice.)
*1: If mode door motor harness connector is disconnected, the following display pattern will appear.
31
→
32
→
33
→
34
→
35
→
36
→
Return to 31
*2: If intake door motor harness connector is disconnected, the following display pattern will appear.
37
→
38
→
39
→
Return to 37
*3:
ATC-66, "Mode Door Motor Circuit"
*4:
ATC-72, "Intake Door Motor Circuit"
.
>> INSPECTION END
Code No.
*1 *2
Mode or intake door position
Reference page
31
VENT (Driver side)
Mode door motor
*3
32
FOOT (Driver side)
33
DEF (Driver side)
34
VENT (Passenger side)
35
FOOT1 (Passenger side)
36
DEF (Passenger side)
37
FRE
Intake door motor
*4
38
20% FRE
39
REC
RJIA0228E
ATC-56
TROUBLE DIAGNOSIS
AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER
The trimmer compensates for differences in range of
±
3
°
C (
±
6
°
F) between temperature setting (displayed dig-
itally) and temperature felt by driver.
Operating procedures for this trimmer are as follows:
●
Begin Self-diagnosis STEP-5 mode.
●
Press (fan) UP switch to set system in auxiliary mode. Refer to
ATC-49, "Self-Diagnosis Function"
●
Display shows 61 in auxiliary mechanism. It takes approximately 3 seconds.
●
Turn the temperature dial as desired. Temperature will change at a rate of 0.5
°
C (1.0
°
F) each time a dial
is turned.
When battery cable is disconnected, trimmer operation is canceled. Temperature set becomes that of ini-
tial condition, i.e. 0
°
C (0
°
F).
RJIA1274E
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