NISSAN PRIMERA 1999 Electronic Repair Manual

Wiring Diagram Ð A/C Ð
YHA338
IGNITION SWITCH
ON or START
FUSE
BLOCK
(J/B)Refer to EL-POWER
To EL-ILL
SIDE
LIGHTSIDE
LIGHTA/C
CONTROL
PANEL
To HA-A/C-03
A/C
AUTO
AMP
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
TROUBLE DIAGNOSESAUTO
HA-42

YHA229
L/Y
WWBR
6B
L/W L/Y L/R
14
13
12L/Y L/W
L/R L/Y L/W
L/RL/W
L/Y
L/R
11 L/B L/B
M112M84L/B
M1
HA-A/C-02
15A
715A
10
M30M84
M29
2 1 21 L/Y
M30
M
5
M29
678
165 678L/B L/B
M1
14 13 12 11 15
C
D
E B
IGNITION SWITCH
ON
FUSE
BLOCK
(J/B)Refer to EL-POWER
BLOWER
MOTOR
Next page
FA N
RESISTOR
Next page
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-43

YHA376
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-44

YHA377
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-45

YHA341
IGNITION SWITCH
ON
FUSE
BLOCK (J/B)Refer to EL-POWER.
To HA-A/C-07
Next page
To HA-A/C-07
To HA-A/C-09
Next page
AIR MIX
DOOR
MOTOR
A/C AUTO
AMP.
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B) : With diesel engine
: With GA engine
:With GA engine or diesel engine
: With SR engine or QG engineA/C CON-
TROL
PANEL Next page
To HA-A/C-07 INTAKE
DOOR
MOTORTHERMISTORTHERMO
CONTROL
AMPLIFER
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-46

WITH SR ENGINE or QG ENGINE
YHA342
Preceding
page
FUSE
BLOCK
(J/B)
AIR
CONDITIONER
RELAY
REFRIGERANT
PRESSURE
SENSOR
COMPRESSOR
ECM
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
ELECTRICAL UNITS
CVT models
MT models
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-47

WITH GA ENGINE or DIESEL ENGINE
YHA343
To HA-A/C-05
DUAL-PRESSURE
SWITCH
AIR
CONDITIONER
RELAY
To HA-A/C-09
IACV-FICD
SOLENOID
VA LV E THERMAL
PROTECTOR
Hi-
temp Lo-
temp
COMPRESSOR
REFER TO THE FOLLOWING
ELECTRICAL UNITS
ELECTRICAL UNITS
: This connector is not shown in ªHARNESS LAYOUTº of EL section.: With GA engine
: With diesel engine
ECM LOW HIGH
NORMAL
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-48

WITH GASOLINE ENGINE
YHA235
BR
17C
G
BR G
LG/R G/B23
15
G/B G/B
1*
LG/R
RFRL
ECM
2*
LG/R
LG/R
: 7
: 41
*
: E65
: E42
: F70
:F4:
:
BR12
BR
5H
,
2*: 13
: 9
GYGY
BRBB,GY,B
M1
HA-A/C-08
10A
11
21
E19
M
B
M140A
f
E45
21
M
BE28
B
E11B
E37 SQ
GA GA
SQ
F101
GA SQ
GA SQ
SQ
E94
GA M70
E125
SQ GA
GA
SQE127
SQ
GA
12
7 64
9 3
85 12
7 64
9 3
85
10F70 F43 2 14567
8
10911 12 13 14 15 16E125E45
2 1E19 E28 E94E127
F1013
12
5
IGNITION SWITCH
ON or START
FUSE BLOCK
(J/B)BATTERY
Refer to EL-POWER.
COOLING
FA N
RELAY-1
COOLING
FA N
MOTOR-2 COOLING
FA N
MOTOR-1
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
ELECTRICAL UNITS : With GA engine
: With SR engine or QG engine
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-49

WITH DIESEL ENGINE
YHA344
IGNITION SWITCH
ON or START
FUSE
BLOCK (J/B)BATTERY
Refer to
EL-POWER
COOLING
FA N
MOTOR-1
COOLING
FA N
RELAY-2 COOLING
FA N
RELAY-1 COOLING
FA N
RELAY-3
To HA-A/C-07
TRIPLE-
PRESSURE
SWITCHCOOLING
FAN MOTOR-2
To HA-A/C-05
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
ELECTRICAL UNITS NORMAL
HIGH
LOWLOWHIGH
ECM
TROUBLE DIAGNOSESAUTO
Wiring Diagram Ð A/C Ð (Cont'd)
HA-50

Main Power Supply and Ground Circuit
Check
POWER SUPPLY CIRCUIT CHECK FOR AUTO A/C
SYSTEM
Check power supply circuit for auto air conditioning system.
Refer to ªPOWER SUPPLY ROUTINGº in EL section and Wir-
ing Diagram.
A/C CONTROL PANEL
Check power supply circuit for A/C control panel unit with igni-
tion switch ON.
1. Disconnect A/C control panel harness connector.
2. Connect voltmeter from harness side.
3. Measure voltage across terminal No.
p1and body ground.
Voltmeter terminal
Voltage
!@
p1Body groundApprox. 12V
Check body ground circuit for A/C control panel with ignition
switch OFF.
1. Disconnect A/C control panel harness connector.
2. Connect ohmmeter from harness side.
3. Check for continuity between terminal No.
p2,p8,p14,p20
and body ground.
Ohmmeter terminal
Continuity
!@
p2
Body groundYe sp8
p14
p20
AUTO AMP. CHECK
Check power supply circuit for auto amp. with ignition switch ON.
1. Disconnect auto amp. harness connector.
2. Connect voltmeter from harness side.
3. Measure voltage across terminal No.
p1and body ground.
Voltmeter terminal
Voltage
!@
p1Body groundApprox. 12V
YHA237 A/C control panel con-
nector
YHA238 A/C control panel
connector
A/C control panel con-
nector
YHA239 Auto amp. connector
TROUBLE DIAGNOSESAUTO
HA-51