1999 NISSAN PRIMERA diagram

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

Diagnostic Procedure 2: Models with relay
type 1
SYMPTOM: Blower motor does not rotate at all when the fan
speed is in AUTO. (It operates in 1, 2, 3, or
4-speed only.)
CHECK POWER SUPPLY FOR A/C
(LO) RELAY.
Disconnect LO relay harness connec-
tor.
Do approx.12 voltsexist between
AUTO relay harness terminal No.
p1
and body ground?
OK
ENG
Check 10A fuse (No.26)
at fuse block.
(Refer to ªPOWER SUP-
PLY ROUTINGº in EL sec-
tion and Wiring Diagram.)
Check circuit continuity between LO
relay harness terminal No.
p2and
body ground.
OK
ENG
CHECK FAN SWITCH
(Refer to Electrical Com-
ponents Inspection.)
(HA-78)
OK NG
Replace
A/C con-
trol panel.
Note
Check circuit continuity
between LO relay har-
ness terminal No.
p2
and A/C control panel
harness terminal No.
p33.
Note
CHECK POWER SUPPLY FOR LO
RELAY.
Do approx.12 voltsexist between LO
relay harness terminal No.
p3and
body ground?
OK
ENG
Check circuit continuity
between resistor harness
terminal No.
p8and LO
relay harness terminal
No.
p3.
pA
(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
YHA245
LO relay
connector
YHA246
LO relay
connector
YHA247
LO relay
connector
YHA248
LO relay
connectorResistor
connector
NHA448
A/C control panel
connectorLO relay
connector
Continuity should exist when test leads
are connected as shown; itshould not
exist when test leads are reversed.
H
H
H
H
H
TROUBLE DIAGNOSESAUTO
HA-54

Diagnostic Procedure 2: Models with relay
type 2
SYMPTOM: Blower motor does not rotate at all when the fan
speed is in AUTO. (It operates in 1, 2, 3, or
4-speed only.)
CHECK POWER SUPPLY FOR A/C
(LO) RELAY.
Disconnect LO relay harness connec-
tor.
Do approx.12 voltsexist between
AUTO relay harness terminal No.
p1
and body ground?
OK
ENG
Check 10A fuse (No.26)
at fuse block.
(Refer to ªPOWER SUP-
PLY ROUTINGº in EL sec-
tion and Wiring Diagram.)
Check circuit continuity between LO
relay harness terminal No.
p2and
body ground.
OK
ENG
CHECK FAN SWITCH
(Refer to Electrical Com-
ponents Inspection.)
(HA-78)
OK NG
Replace
A/C con-
trol panel.
Note
Check circuit continuity
between LO relay har-
ness terminal No.
p2
and A/C control panel
harness terminal No.
p33.
Note
CHECK POWER SUPPLY FOR LO
RELAY.
Do approx.12 voltsexist between LO
relay harness terminal No.
p3and
body ground?
OK
ENG
Check circuit continuity
between resistor harness
terminal No.
p8and LO
relay harness terminal
No.
p3.
pA
(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
YHA379
YHA380
YHA381
YHA382
YHA389
H
H
H
H
H
TROUBLE DIAGNOSESAUTO
HA-56

Diagnostic Procedure 4: Models with relay
type 1
SYMPTOM: Blower motor fan speed does not change when
fan speed is in AUTO. (Fan speed is fixed in
LOW.)
CHECK THERMAL TRANSMITTER.
Disconnect auto amp. harness connec-
tor.
Is resistance between auto amplifier
terminal No.
p10andp5lower than
approx.940W?
NG
EOK
CHECK POWER SUP-
PLY FOR LOW RELAY.
Disconnect low relay.
Do approx.12 voltsexist
between low relay har-
ness terminal No.
p1
and body ground?
OK
NG
CHECK THERMAL TRANSMITTER
CIRCUIT.
Go toDiagnostic Procedure 14.
(HA-77)
Reconnect low relay.Check 10A fuse (No.26)
at fuse block.
(Refer to ªPOWER SUP-
PLY ROUTINGº in EL sec-
tion and Wiring Diagram.)
CHECK A/C CONTROL PANEL
Do approx.0.5Vexist between A/C
control panel terminal
p35and body
ground when you select AUTO posi-
tion?
OK
ENG
Replace A/C control
panel.
Note
Check circuit continuity between A/C
control panel harness terminal
p35and
auto amp. harness terminal
p11.
OK
CHECK AUTO AMP.
Connect checking resistor.
(Refer to HA-30.)
Do approx.0 voltsexist between low
relay harness terminal No.
p2and
body ground when you move PTC
from 18ÉC (64ÉF) to 32ÉC (90ÉF)?
OK
ENG
Replace low relay.
pA
(Go to next page)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
YHA254
Auto amp. connector
AUTO amp.
connector
YHA390
NHA450
A/C control panel
connector
YHA259
Auto amp.
connectorA/C control panel
connector
YHA391
H
HH
H
H
H
H
TROUBLE DIAGNOSESAUTO
HA-61

pA
CHECK POWER SUPPLY FOR AUTO
AMP.
Disconnect auto amp. harness connec-
tor.
Do approx.12 voltsexist between auto
amp. harness terminal No.
p1and
body ground?
OK
ENG
Check 10A fuse (No.26)
at fuse block.
(Refer to ªPOWER SUP-
PLY ROUTINGº in EL sec-
tion and Wiring Diagram.)
Note
CHECK BODY GROUND CIRCUIT
FOR AUTO AMP.
Does continuity exist between auto
amp. harness terminal No.
p17and
body ground?
OK
Replace auto amp.
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
YHA257
Auto amp. connector
YHA258
Auto amp. connector
H
H
H
TROUBLE DIAGNOSESAUTO
Diagnostic Procedure 4: Models with relay
type 1 (Cont'd)
HA-62

Diagnostic Procedure 4: Models with relay
type 2
SYMPTOM: Blower motor fan speed does not change when
fan speed is in AUTO. (Fan speed is fixed in
LOW.)
CHECK THERMAL TRANSMITTER.
Disconnect auto amp. harness connec-
tor.
Is resistance between auto amplifier
terminal No.
p10andp5lower than
approx.940W?
NG
EOK
CHECK POWER SUP-
PLY FOR LOW RELAY.
Disconnect low relay.
Do approx.12 voltsexist
between low relay har-
ness terminal No.
p1
and body ground?
OK
NG
CHECK THERMAL TRANSMITTER
CIRCUIT.
Go toDiagnostic Procedure 14.
(HA-77)
Reconnect low relay.Check 10A fuse (No.26)
at fuse block.
(Refer to ªPOWER SUP-
PLY ROUTINGº in EL sec-
tion and Wiring Diagram.)
CHECK A/C CONTROL PANEL
Do approx.0.5Vexist between A/C
control panel terminal
p35and body
ground when you select AUTO posi-
tion?
OK
ENG
Replace A/C control
panel.
Note
Check circuit continuity between A/C
control panel harness terminal
p35and
auto amp. harness terminal
p11.
OK
CHECK AUTO AMP.
Connect checking resistor.
(Refer to HA-30.)
Do approx.0 voltsexist between low
relay harness terminal No.
p2and
body ground when you move PTC
from 18ÉC (64ÉF) to 32ÉC (90ÉF)?
OK
ENG
Replace low relay.
pA
(Go to next page)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
YHA254
Auto amp. connector
AUTO amp.
connector
YHA386
NHA450
A/C control panel
connector
YHA259
Auto amp.
connectorA/C control panel
connector
YHA387
H
HH
H
H
H
H
TROUBLE DIAGNOSESAUTO
HA-63