Nissan Primera P12. Instruction — part 16
TROUBLE DIAGNOSIS
ATC-57
C
D
E
F
G
H
I
K
L
M
A
B
ATC
3.
Confirm that discharge air comes out according to the air distri-
bution table. Refer to
.
Intake door position is checked in the next step.
If NG, go to trouble diagnosis procedure for
.
If OK, continue with next check.
NOTE:
Confirm that the compressor clutch is engaged (visual inspection)
and intake door position is at FRESH when the DEF is selected.
CHECKING RECIRCULATION
1.
Press recirculation (REC) switch one time. Recirculation indica-
tor should illuminate.
2.
Listen for intake door position change (you should hear blower
sound change slightly).
If NG, go to trouble diagnosis procedure for
.
If OK, continue with next check.
CHECKING FRESH SWITCH
1.
Press fresh (FRE) switch one time. Fresh switch indicator
should illuminate.
2.
Listen for intake door position change (you should hear blower
sound change slightly).
If NG, go to trouble diagnosis procedure for
.
If OK, continue with next check.
RHA654FI
RJIA0761E
RJIA0762E
ATC-58
TROUBLE DIAGNOSIS
CHECKING TEMPERATURE DECREASE
1.
Turn the temperature dial until 18
°
C (60
°
F) is displayed.
2.
Check for cold air at discharge air outlets.
If NG, go to trouble diagnosis procedure for
.
If OK, continue with next check.
CHECKING TEMPERATURE INCREASE
1.
Turn the temperature dial until 32
°
C (90
°
F) is displayed.
2.
Check for hot air at discharge air outlets.
If NG, go to trouble diagnosis procedure for
.
If OK, continue with next check.
CHECK A/C SWITCH
1.
Press temperature dial and A/C switch.
2.
Display should indicate AUTO (not ECON).
●
Confirm that the compressor clutch engages (sound or visual
inspection).
If NG, go to
ATC-79, "Magnet Clutch Circuit"
.
If OK, continue with next check.
CHECKING AUTO MODE
1.
Press temperature dial.
2.
Display should indicate AUTO (not ECON).
●
Discharge air and blower speed will depend on ambient, in-
vehicle, and set temperatures.
If NG, go to trouble diagnosis procedure for
and Ground Circuit for Auto Amp."
, then if necessary, trouble diag-
nosis procedure for
ATC-79, "Magnet Clutch Circuit"
.
If all operational check are OK (symptom cannot be duplicated), go
to Incident Simulation Tests in
GI-24, "How to Perform Efficient Diag-
nosis for an Electrical Incident"
and perform tests as outlined to sim-
ulate driving conditions environment. If symptom appears, refer to
and perform applicable trouble diag-
nosis procedures.
RJIA0763E
RJIA0764E
RJIA2362E
RJIA0765E
TROUBLE DIAGNOSIS
ATC-59
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Power Supply and Ground Circuit for Auto Amp.
EJS002XX
SYMPTOM: A/C system does not come on.
INSPECTION FLOW
COMPONENT DESCRIPTION
Automatic Amplifier (Auto Amp.)
The auto amplifier has a built-in microcomputer which processes
information sent from various sensors needed for air conditioner
operation. The air mix door motor, mode door motor, intake door
motor, blower motor and compressor are then controlled.
The auto amplifier is unitized with control mechanisms. When the
various switches and temperature adjustment dial are operated, data
is input to the auto amp. from the AV AND NAVI CONTROL UNIT
using multiplex communication.
Self-diagnostic functions are also built into auto amplifier to provide
quick check of malfunctions in the auto air conditioner system.
Potentio Temperature Control (PTC)
The PTC is built into the multi-function switch. It can be set at an
interval of 0.5
°
C (1.0
°
F) in the 18
°
C (60
°
F) to 32
°
C (90
°
F) tempera-
ture range by turning the temperature dial. The set temperature is
displayed.
*1
*2
*3
ATC-60, "DIAGNOSTIC PROCE-
DURE FOR A/C SYSTEM"
RJIA0766E
RJIA0750E
RJIA0767E
ATC-60
TROUBLE DIAGNOSIS
DIAGNOSTIC PROCEDURE FOR A/C SYSTEM
SYMPTOM: A/C system does not come on.
1.
CHECK POWER SUPPLY CIRCUIT FOR AUTO AMP.
OK or NG
OK
>> GO TO 2.
NG
>> Check 10A fuses (Nos. 10 and 12) and 15A fuses (Nos. 14 and 16) located in the fuse block.
●
If fuses are OK, check for open circuit in wiring harness. Repair or replace as necessary.
●
If fuses are NG, replace fuse and check wiring harness for short circuit. Repair or replace as
necessary.
2.
CHECK GROUND CIRCUIT FOR AUTO AMP.
OK or NG
OK
>> Replace auto amp.
NG
>> Repair or replace harness.
RJIA0768E
Terminal
Ignition switch position
(+)
(
−
)
OFF
ACC
ON
Auto amp.
connector
Terminal No.
(Wire color)
M76
26 (R/B)
Ground
Approx.
12V
Approx.
12V
Approx.
12V
27 (Y/G)
Approx.
0V
Approx.
0V
Approx.
12V
33 (L/W)
Approx.
0V
Approx.
12V
Approx.
12V
RJIA0769E
Terminal
Continuity
(+)
(-)
Auto amp. con-
nector
Terminal No.
(Wire color)
M76
24 (B)
Ground
Yes
RJIA0770E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст