Control NISSAN PRIMERA 1999 Electronic Repair Manual

FAN SPEED CONTROL
Component parts
Fan speed control system components are:
1) Auto amplifier
2) In-vehicle sensor
3) Ambient sensor
4) Sunload sensor
5) A/C switch relay
6) A/C switch
7) Fan switch
8) Blower motor
9) Resistance
10) HI, MH, ML and LO relays
System operation
Blower fan speed is automatically controlled so that the in-vehicle temperature is maintained to the set tem-
perature.
The temperature set by the PTC (Potentio Temperature Control) and the temperature detected by the in-
vehicle sensor and ambient sensor are compensated by the sunload sensor signal. The auto amplifier then
determines fan speed from the ON-OFF operation of the A/C switch. The fan speed decision by the auto
amplifier activates the fan relay and the blower fan motor rotates. When the A/C switch is ON, fan speed is
activated in 4 steps, HI, MH, ML, and LO. When the A/C switch is OFF, fan speed is activated in 3 steps,
MH, ML, and LO.
KHA130 Auto amplifier
In-vehicle
sensor
Ambient
sensor
Sunload
sensor
A/C switchConstant voltage
transformation
Air mix door posi-
tion arithmetic cir-
cuit
Sunload compen-
sationA/C operation
signal detection
Air flow volume
arithmetic circuitHI relay
MH
relay
ML
relayBlower
motor
Resistor
LO relay
Fan switch
(AUTO)
SYSTEM DESCRIPTIONAUTO
Control System Output Components (Cont'd)
HA-95

Signals from each sensor, PTC, A/C switch etc. are sent to the
air flow volume arithmetic circuit in the auto amplifier. Air flow
volume is determined by this circuit.
(1) When the air flow volume is set to ML
The air flow volume arithmetic circuit gives current to Tr
p3,
which turns the ML relay on. Thus, the blower motor rotates
in the ML condition.
SHA573CC
SHA574CA
Air flows
volume
arithmetic
circuitHI
relay
MH relay
ML relayBlower
motor
Resistor
Fan switch
(AUTO)
A/C (LO) relay
SYSTEM DESCRIPTIONAUTO
Control System Output Components (Cont'd)
HA-96

(2) When set to HI
The air flow volume arithmetic circuit gives current to Tr
p1,
which turns the HI relay on. Thus, the blower motor rotates
in the HI condition. Also, Tr
p2and Trp3are receiving cur-
rent and as a result the ML and MH relays are on.
(3) When set to LO
The air flow volume arithmetic circuit does not give any cur-
rent to Tr
p1,p2norp3.
Only the LO relay turns on and so the blower motor rotates
in the LO condition.
SHA574CA
Air flows
volume
arithmetic
circuitHI
relay
MH relay
ML relayBlower
motor
Resistor
Fan switch
(AUTO)
LO relay Auto amp.
SHA576CA
Air flows
volume
arithmetic
circuitHI
relay
MH relay
ML relayBlower
motor
Resistor
Fan switch
(AUTO)
LO relay Auto amp.
SYSTEM DESCRIPTIONAUTO
Control System Output Components (Cont'd)
HA-97

STARTING FAN SPEED CONTROL
The starting fan control system is so designed to prevent excess cold air from being expelled after the engine
is started when the engine coolant temperature is low.
The component parts related to this system are the water temperature sensor microswitch, HI, MH, ML and
LO relays, blower motor, resistance and auto amplifier.
When the fan switch is set to AUTO, the mode is selected either B/L, FOOT or FOOT/DEF and the engine
coolant temperature is below 56ÉC (133ÉF), the speed of the blower motor is fixed in the LO position.
LO, ML, MH AND HI RELAYS
The LO and ML relays are located on the auto amplifier bracket,
and the MH and HI relays are installed on the back side of the
audio unit. Each fan relay operates according to the air flow vol-
ume determined by the auto amplifier. The blower motor then
operates accordingly.
SHA188DA
Blower speed
1.0
0 (32) 50 (122) ÉC (ÉF)
Auto amp.
.Constant voltage
transformation
Sensor voltage
.Air mix door
position arithmetic
circuit
Air flow volume
arithmetic cir-
cuit
Mode switch
Water temperature meter
Thermal
transmitterFan switch (AUTO)LO relay ML relay MH relay HI relay
.Blower motor
Resistor
NHA304
.LO relay
.ML relay.HI relay
.MH relay
SYSTEM DESCRIPTIONAUTO
Control System Output Components (Cont'd)
HA-98

SHA578CA Auto amplifier
Air flows volume arith-
metic circuitHI relay
MH relay
ML relay
LO relay
Fan switch (AUTO)IGN ACC
Resistor
SYSTEM DESCRIPTIONAUTO
Control System Output Components (Cont'd)
HA-99

Maintenance of Lubricant Quantity in
Compressor
The lubricant used to lubricate the compressor circulates through
the system with the refrigerant. Add lubricant to compressor
when replacing any component or after a large gas leakage
occurred. It is important to maintain the specified amount.
If lubricant quantity is not maintained properly, the following mal-
functions may result:
lLack of lubricant: May lead to a seized compressor
lExcessive lubricant: Inadequate cooling (thermal exchange
interference)
LUBRICANT
CR-14
Name: Nissan A/C System Oil Type R
Part number: KLH00-PAGR0
CSV613
Name: Nissan A/C System Oil Type S
Part number: KLH00-PAGS0
CHECKING AND ADJUSTING
Adjust the lubricant quantity according to the flowchart shown
below.START
Can lubricant return operation be per-
formed?
lA/C system works properly.
lThere is no evidence of a large amount
of lubricant leakage.
No
EYe s
Perform lubricant return operation, proceeding as follows:
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Start engine, and set the following conditions:
lTest condition
Engine speed: Idling to 1,200 rpm
A/C or AUTO switch: ON
Blower speed: Max. position
Temp. control: Optional [Set so that intake air temperature
is 25 to 30ÉC (77 to 86ÉF).]
2. Next item is for CSV613 compressor. Connect the manifold
gauge, and check that the high pressure side pressure is588
kPa (5.9 bar, 6 kg/cm
2, 85 psi) or higher.
If less than the reference level, attach a cover to the front face
of the condenser to raise the pressure.
3. Perform lubricant return operation for about 10 minutes.
4. Stop engine.
CAUTION:
If excessive lubricant leakage is noted, do not perform the lubri-
cant return operation.
Should the compressor be replaced?
No Yes
F
pA
(Go to next page.)
Is there any part to be replaced?
(Evaporator, condenser, liquid tank or in
case there is evidence of a large amount
of lubricant leakage.)
No
EYe s
After replacing any of the following major components, add the correct
amount of lubricant to the system.
Amount of lubricant to be added
*1: If compressor is replaced, addition of lubricant is included in the
flow chart.
*2: If refrigerant leak is small, no addition of lubricant is needed.
Carry out the A/C performance test.F
Part replacedLubricant to be added to system
Remarks
Amount of lubricant
m(Imp fl oz)
Evaporator 75 (2.6) Ð
Condenser 75 (2.6) Ð
Liquid tank 5 (0.2)Add if compressor is
not replaced. *1
In case of refrigerant
leak30 (1.1) Large leak
Ð Small leak*2
H
H
H
H
H
SERVICE PROCEDURESAUTO
HA-102

Belt tension
lRefer to MA section.
Fast Idle Control Device (FICD)
lrefer to EC section.
Compressor Ð Model CR-14 (Calsonic make)
Compressor Clutch
REMOVAL
lWhen removing center bolt, hold clutch disc with clutch disc
wrench.
lTake off clutch disc.
lRemove snap ring (which secures rotor pulley) by using
external snap ring pliers.
RHA314E Magnet clutch assembly
Compressor
Field coil
Snap ring
Pulley assembly
Clutch discShim
Snap ring
Center bolt12 - 15 N´m (1.2 - 1.5 kg-m,9-11ft-lb)
SEC. 274
RHA315EA
RHA316E Snap ring pliers
SERVICE PROCEDURESAUTO
Compressor Mounting (Cont'd)
HA-111

A
AAC/V - Wiring diagram....EC-QG-276, EC-SR-265
ABS (anti-lock brake system).........................BR-50
A/C control linkage adjustment (manual
A/C) .............................................................HA-82
A/C control operation (auto A/C) ....................HA-19
A/C diagnostic work flow (auto A/C) ..............HA-26
A/C performance chart ...................................HA-35
A/C performance test diagnoses....................HA-33
A/C relay.........................................................HA-78
A/C service data specification ......................HA-118
A/C switch ......................................................HA-78
A/C symptom chart (auto A/C) .......................HA-28
A/C trouble diagnoses (auto A/C) ..................HA-26
Accelerator control system ...............................FE-3
Accelerator position sensor ...................EC-CD-108
Accelerator position switch ....................EC-CD-108
Accelerator wire adjustment .............................FE-4
A/CCUT - Wiring diagram ......................EC-CD-127
Air bag disposal..............................................RS-27
Air bag precautions ...........................................GI-3
Air bleeding for brake system ..........................BR-8
Air cleaner filter replacement ............MA-23, 34, 44
Air conditioner cut
control .....EC-QG-24, EC-SR-26, EC-CD-20, 126
Air flow meter - See Mass air flow
sensor ............................EC-QG-110, EC-SR-120
Air mix. door motor.........................................HA-92
Alternator ..................................................EL-53, 56
Ambient sensor ..............................................HA-86
Antenna .........................................................EL-229
Anti-lock brake system - See ABS .................BR-50
APS - Wiring diagram ............................EC-CD-109
A/T - Wiring diagram - AT - FTS .....................AT-56
A/T - Wiring diagram - AT - MAIN ...................AT-45
A/T - Wiring diagram - AT - PNP/SW..............AT-50
A/T - Wiring diagram - AT - VSS A/T ..............AT-64
A/T diagnosis communication line .........EC-SR-295
A/T fluid temperature sensor...........................AT-54
A/T trouble diagnoses ...............................AT-29, 30
A/T Wiring diagram - AT - ENG SS ................AT-67
A/T Wiring diagram AT - LPSV .......................AT-76
A/T Wiring diagram AT - TCV .........................AT-71
A/T Wiring diagram AT - TPS..........................AT-81
ATDIAG - Wiring diagram ......................EC-SR-296
Audio .............................................................EL-216
AUDIO - Wiring diagram ...............................EL-219
Audio and A/C control removal and
installation - See Instrument panel .............BT-15
Auto air conditioner - Wiring diagram ............HA-42
Automatic amplifier .........................................HA-87
Automatic transaxle number............................GI-44
Automatic transmission fluid
replacement..........................................MA-49, 50
Auxiliary air control (AAC)
valve ..............................EC-QG-274, EC-SR-263BBack door opener - See Back door ............BT-9, 11
Back door trim.................................................BT-30
Back door window ....................................BT-35, 56
Back-up lamp ................................................EL-107
BACK/L - Wiring diagram..............................EL-107
Ball joint front axle ....................................FA-32, 33
Base idle air volume
initialiging ...........................EC-QG-33, EC-SR-46
Basic inspection ....................EC-QG-72, EC-SR-84
Battery .............................................................EL-29
Body alignment ...............................................BT-60
Brake booster .................................................BR-18
Brake control valve (Proportioning
valve)...........................................................BR-11
Brake fluid change ...........................................BR-7
Brake fluid level .............................................MA-51
Brake fluid level and line check .......................BR-7
Brake hydraulic line ..........................................BR-9
Brake inspection ............................................MA-51
Brake lining wear temporary checking ..........MA-51
Brake pedal ....................................................BR-13
Bulb specifications ........................................EL-137
Bumper, front ....................................................BT-5
Bumper, rear .......................................BT-5, 7, 9, 11
BUZZER - Wiring diagram ............................EL-181
C
Camshaft inspection ...............EM-35, 91, 138, 147,
183, 192, 196
Camshaft position sensor
(CMPS) ..........................EC-QG-238, EC-SR-239
Camshaft position sensor (PHASE) ......EC-QG-238
Canister-See EVAP
canister ..............................EC-QG-25, EC-SR-27
CHARGE - Wiring diagram .............................EL-53
Charging system .............................................EL-53
Chassis and body maintenance ....................MA-48
CHIME - Wiring diagram ...............................EL-181
Cigarette lighter.............................................EL-203
Circuit breaker.................................................EL-22
CKPS - Wiring diagram....EC-QG-234, EC-SR-236,
292, EC-CD-115
Clock .............................................................EL-203
Closed throttle position switch ...............EC-SR-271
Clutch cover ....................................................CL-13
Clutch damper ................................................CL-10
Clutch disc ......................................................CL-13
Clutch fluid level.............................................MA-48
Clutch master cylinder ......................................CL-8
Clutch operating cylinder ..................................CL-9
Clutch release mechanism..............................CL-11
CMPS - Wiring diagram ....EC-QG-240, EC-SR-242
Coil spring (rear) .............................................RA-11
Collision diagnosis..........................................RS-57
Combination meter........................................EL-138
ALPHABETICAL INDEX
IDX-2

Combination meter removal and instal-
lation - See Instrument panel ......................BT-15
Combination switch .........................................EL-64
Combustion chamber replacement ..............EM-146
Component location (cool box) ......................HA-39
Compression pressure ..........EM-69, 126, 188, 196
Compressor clutch removal and
installation .................................................HA-111
Compressor mounting ..................................HA-109
Compressor precaution ....................................HA-7
Compressor special service tool ......................HA-7
Connecting rod......EM-55, 171, 176, 186, 193, 200
Connecting rod bearing
clearance....EM-58, 111, 115, 170, 187, 195, 201
Connecting rod bushing clearance ........EM-59, 116
Console box - See Instrument panel ..............BT-15
CONSULT for ABS .........................................BR-69
CONSULT for engine ...........EC-QG-55, EC-SR-68,
EC-CD-27
CONSULT-II general information .....................GI-39
Control sleeve position sensor ................EC-CD-74
Converter housing installation .......................AT-117
COOL/F - Wiring diagram ....................EC-QG-292,
EC-SR-282, EC-CD-89
Coolant replacement .........................MA-19, 29, 40
Cooling circuit (engine) ........................LC-8, 21, 31
Cooling fan control ...........EC-QG-289, EC-SR-279,
EC-CD-20, 87
Cooling fan motor .............EC-QG-299, EC-SR-289
Cooling fan relay ..............EC-QG-299, EC-SR-289,
EC-CD-96
Crank angle sensor built into distributor
- See Camshaft position sensor .......EC-QG-238,
EC-SR-239
‘‘Crankcase emission control system -
See positive crankcase
ventilation’’ .........................EC-QG-28, EC-SR-30
Crankcase ventilation system - See
Positive crankcase
ventilation ..........................EC-QG-28, EC-SR-30
Crankshaft ........EM-53, 57, 61, 110, 113, 118, 131,
138, 139, 167, 172, 175, 186, 194, 200
Crankshaft position sensor (OBD) .......EC-QG-232,
EC-SR-234, 290
Crankshaft position sensor (POS).........EC-QG-232
Crankshaft position sensor (TDC)..........EC-CD-114
CSPS - Wiring diagram ...........................EC-CD-75
Cylinder block .........................EM-52, 55, 109, 166,
173, 184, 192, 199
Cylinder head ..........EM-31, 86, 140, 178, 188, 196
D
Data link connector for
Consult ..............................EC-QG-29, EC-SR-31
Daytime light system.......................................EL-78
DEF - Wiring diagram ...................................EL-209
Detonation sensor - See Knock
sensor ............................EC-QG-228, EC-SR-230
Diagnosis sensor unit .....................................RS-13Diagnostic trouble code (DTC) for OBD
system ...................................EC-QG-6, EC-SR-6
Diagnostic trouble code (DTC) inspec-
tion priority chart...............EC-QG-80, EC-SR-92,
EC-CD-39
Dimensions ......................................................GI-45
Direct ignition system ..............................EC-QG-32
Door lock .........................................................BT-13
Door mirror ......................................................BT-58
Door trim .........................................................BT-24
Door, front .......................................................BT-13
Door, rear ........................................................BT-13
Drive belt inspection ..........................MA-18, 28, 39
Drive plate runout...................................EM-60, 117
Drive shaft (front) ............................................FA-15
Dropping resistor (A/T) ....................................AT-78
DTC work support .................EC-QG-63, EC-SR-76
DTRL - Wiring diagram ...................................EL-79
E
ECCS relay ............................................EC-CD-140
ECM input/output signal......EC-QG-91, EC-SR-103
ECTS - Wiring diagram ....EC-QG-122, EC-SR-134,
EC-CD-67
EGR control (EGRC) - solenoid valve ...EC-CD-129
EGR control valve..........................EC-QG-252, 311
EGR temperature sensor ......................EC-QG-300
EGR/TS - Wiring diagram .....................EC-QG-302
EGRC - Wiring diagram .........................EC-CD-131
EGRC1 - Wiring diagram ..............EC-QG-248, 309
Electric governer ......................................EC-CD-78
Electric sun roof ............................................EL-230
Electrical diagnoses.........................................GI-24
Electrical ignition system.......EC-QG-23, EC-SR-25
Electrical unit ................................................Foldout
Electronic fuel injection pump ..................EC-CD-24
Engine control circuit
diagram ...........EC-QG-17, EC-SR-19, EC-CD-11
Engine control component parts
location ..............................EC-QG-14, EC-SR-15
Engine control module
(ECM) .....EC-QG-282, EC-SR-277, EC-CD-9, 86
Engine control system diagram and
chart ................EC-QG-18, EC-SR-20, EC-CD-12
Engine coolant temperature sensor
(ECTS) ........EC-QG-120, EC-SR-132, EC-CD-66
Engine fail-safe system .........EC-QG-81, EC-SR-93
Engine oil filter replacement ....................MA-24, 45
Engine oil precautions .......................................GI-6
Engine oil replacement ......................MA-24, 34, 45
Engine removal..............................EM-48, 106, 162
Engine serial number ......................................GI-44
Engine trouble diagnoses ........................EC-CD-33
EVAP canister .......................EC-QG-26, EC-SR-28
EVAP canister purge volume control
solenoid valve ...........EC-QG-26, 262, EC-SR-28
EVAP canister purge volume control
valve ..............................EC-QG-262, EC-SR-250
EVAP vapor lines inspection....................MA-26, 37
ALPHABETICAL INDEX
IDX-3

Evaporative emission (EVAP)
system ...............................EC-QG-25, EC-SR-27
Exhaust gas recirculation (EGR)
valve...........................................EC-QG-244, 305
Exhaust system ................................................FE-9
Exhaust system inspection ............................MA-48
Exterior ............................................................BT-31
F
FCUT - Wiring diagram ..........................EC-CD-101
F/FOG - Wiring diagram................................EL-110
Final drive (FF M/T) ...........................MT-32, 51, 71
Floor trim .........................................................BT-18
Fluid temperature sensor (A/T) .......................AT-94
Fluids..............................................................MA-16
Flywheel (clutch) .............................................CL-14
Flywheel runout..............................EM-60, 117, 177
Fog lamp, front ..............................................EL-110
Fog lamp, rear ...............................................EL-112
F/PUMP - Wiring
diagram..........................EC-QG-338, EC-SR-317
Freeze frame data ................EC-QG-38, EC-SR-50
Fresh vent door control linkage
adjustment ..................................................HA-83
FRO2 - Wiring diagram ........EC-QG-135, 154, 162,
EC-SR-147, 165, 172
FRO2/H - Wiring
diagram..........................EC-QG-168, EC-SR-177
Front axle ..........................................................FA-9
Front bumper ....................................................BT-5
Front disc brake .............................................BR-23
Front door .......................................................BT-13
Front fog lamp .......................................EL-110, 111
Front fog lamp removal and installation ...........BT-5
Front heated oxygen sensor
(HO2S) ......................................EC-QG-132, 139,
EC-SR-144, 150, 156, 162, 170
Front heated oxygen sensor (HO2S)
heater ............................EC-QG-166, EC-SR-175
Front passenger air bag .................................RS-17
Front seat ........................................................BT-40
Front seat belt ..................................................RS-3
Front suspension ............................................FA-26
Front washer .................................................EL-186
Front wiper ....................................................EL-186
FTS - Wiring diagram ............................EC-CD-105
FUEL - Wiring
diagram .........EC-QG-210, 217, EC-SR-213, 220
Fuel cut control (at no load & high
engine speed)....................EC-QG-25, EC-SR-27
Fuel cut solenoid valve ..........................EC-CD-100
Fuel filter ...............................EC-QG-29, EC-SR-31
Fuel filter replacement .......................MA-23, 33, 43
Fuel gauge ............................................EL-141, 146
Fuel injection system....................EC-QG-208, 215,
EC-SR-212, 218,
EC-CD-15, 18
Fuel injector ......................EC-QG-318, EC-SR-302
Fuel line inspection............................MA-22, 33, 43Fuel precautions ................................................GI-7
Fuel pressure check .............EC-QG-29, EC-SR-31
Fuel pressure regulator .........EC-QG-30, EC-SR-32
Fuel pressure release ...........EC-QG-29, EC-SR-31
Fuel pump .........................EC-QG-336, EC-SR-316
Fuel pump and gauge ......................................FE-7
Fuel pump relay ................EC-QG-336, EC-SR-316
Fuel system ......................................................FE-6
Fuel tank vacuum relief
valve ..................................EC-QG-26, EC-SR-28
Fuel temperature sensor .................EC-CD-17, 104
Fuse ..................................................EL-22, Foldout
Fuse block ....................................................Foldout
Fusible link ........................................EL-22, Foldout
G
Garage jack and safety stand .........................GI-47
Gauges..........................................................EL-138
Gear components (M/T) ...........................MT-16, 49
Generic scan tool (GST) .......EC-QG-66, EC-SR-78
GLOW - Wiring diagram ........................EC-CD-120
Glow plug .........................................EC-CD-15, 118
Glow relay ................................................EC-CD-15
GOVNR - Wiring diagram ........................EC-CD-79
Grille - See Exterior ........................................BT-38
Ground distribution..........................................EL-23
H
H/AIM - Wiring diagram ....................EL-87, 93, 200
Harness connector ............................................EL-6
Harness layout ..............................................EL-368
Hazard warning lamp ....................................EL-117
Headlamp..................................................EL-67, 69
Headlamp aiming control ................................EL-87
Headlamp washer .........................................EL-200
Headlining - See Roof trim .............................BT-25
Heated oxygen sensor (HO2S)
(front) ........................................EC-QG-132, 139,
EC-SR-144, 150, 156, 162, 170
Heated oxygen sensor (HO2S) heater
(front) .............................EC-QG-166, EC-SR-175
Heated oxygen sensor (HO2S) heater
(rear) ..............................EC-QG-203, EC-SR-207
Heated oxygen sensor (rear) ...............EC-QG-171,
EC-SR-180, 187,
194, 201
Heated oxygen sensor inspection ...........MA-27, 38
Heated seat .......................................BT-42, EL-234
HEATER - Wiring diagram .............................HA-40
HFC134a (R134a) system service
procedure ..................................................HA-100
HFC134a (R134a) system service tools ..........HA-8
H/LAMP - Wiring diagram ...............................EL-67
Hood..................................................................BT-5
Horn ..............................................................EL-203
HORN - Wiring diagram ................................EL-203
ALPHABETICAL INDEX
IDX-4