1999 NISSAN PRIMERA power steering

6 CHECK VACUUM PORT
1. Stop engine.
2. Disconnect vacuum hose connected to air control valve (Power steering) at the vacuum port.
3. Blow air into vacuum port.
4. Check that air flows freely.
SEF970X
OK or NG
OK©GO TO 7.
NG©Repair or clean vacuum port.
7 CHECK VACUUM HOSES AND TUBES
1. Disconnect vacuum hoses between air control valve (Power steering) and vacuum port, air control valve (Power steer-
ing) and intake air duct.
2. Check hoses and tubes for cracks, clogging, improper connection or disconnection.
SEF109L
OK or NG
OK©GO TO 8.
NG©Repair hoses or tubes.
DTC P0505 IDLE AIR CONTROL VALVE (IACV) Ð
AUXILIARY AIR CONTROL (AAC) VALVESR20DE
Diagnostic Procedure (Cont'd)
EC-268

Component DescriptionNCEC0451The power steering oil pressure switch is attached to the power
steering high-pressure tube and detects a power steering load.
When a power steering load is detected, it signals the ECM. The
ECM adjusts the IACV-AAC valve to increase the idle speed and
adjust for the increased load.
CONSULT-II Reference Value in Data Monitor
Mode
NCEC0452Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNALIEngine: After warming up, idle
the engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is fully turned ON
ECM Terminals and Reference ValueNCEC0453Specification data are reference values and are measured between each terminal and 48 (ECM ground).
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
46 PU/WPower steering oil pressure
switch[Engine is running]
ISteering wheel is fully turnedApproximately 0V
[Engine is running]
ISteering wheel is not turnedApproximately 5V
NEF124A Power steering oil pressure switch
POWER STEERING OIL PRESSURE SWITCHSR20DE
Component Description
EC-321

Wiring DiagramNCEC0450
YEC254
POWER STEERING OIL PRESSURE SWITCHSR20DE
Wiring Diagram
EC-322

Diagnostic Procedure=NCEC0454
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 3.
2 CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check ªPW/ST SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
PEF591I
MTBL0141
OK or NG
OK©INSPECTION END
NG©GO TO 4.
3 CHECK OVERALL FUNCTION
Without CONSULT-II
1. Start engine.
2. Check voltage between ECM terminal 46 and ground under the following conditions.
SEF148X
MTBL0142
OK or NG
OK©INSPECTION END
NG©GO TO 4.
Steering is in neutral positionOFF
Steering is turnedON
Condition Voltage
When steering wheel is turned quicklyApproximately 0V
Except aboveApproximately 5V
CONNECT
POWER STEERING OIL PRESSURE SWITCHSR20DE
Diagnostic Procedure
EC-323

Component InspectionNCEC0455POWER STEERING OIL PRESSURE SWITCHNCEC0455S011. Disconnect power steering oil pressure switch harness con-
nector then start engine.
2. Check continuity between terminals 1 and 2.
Refer to wiring diagram.
Conditions Continuity
Steering wheel is being turnedYe s
Steering wheel is not being turnedNo
If NG, replace power steering oil pressure switch.
4 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect power steering oil pressure switch harness connector.
3. Check harness continuity between power steering oil pressure switch harness terminal 2 and engine ground.
Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 5.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
5 CHECK INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 46 and power steering oil pressure switch harness terminal 1.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 7.
NG©GO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F4, E42
IHarness for open or short between ECM and power steering oil pressure switch
©Repair open circuit or short to ground or short to power in harness or connectors.
7 CHECK POWER STEERING OIL PRESSURE SWITCH
Refer to ªComponent Inspectionº, EC-SR-324.
OK or NG
OK©GO TO 8.
NG©Replace power steering oil pressure switch.
8 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-SR-114.
©INSPECTION END
POWER STEERING OIL PRESSURE SWITCHSR20DE
Component Inspection
EC-324

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:

Read GI section, “HOW TO READ WIRING DIAGRAMS”.
When you perform trouble diagnoses, read GI section, “HOW TO FOLLOW FLOW
CHART IN TROUBLE DIAGNOSES” and “HOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENT”.
CONTENTS
PRECAUTIONS AND PREPARATION.......................... 5
Precautions ................................................................ 5
HARNESS CONNECTOR.............................................. 6
Description ................................................................. 6
STANDARDIZED RELAY.............................................. 8
Description ................................................................. 8
POWER SUPPLY ROUTING....................................... 10
Schematic ................................................................ 10
Wiring Diagram - POWER - .................................... 12
Fuse ......................................................................... 22
Fusible Link.............................................................. 22
Circuit Breaker Inspection ....................................... 22
GROUND DISTRIBUTION........................................... 23
BATTERY..................................................................... 29
How to Handle Battery ............................................ 29
Battery Test and Charging Chart ............................. 32
Service Data and Specifications (SDS)................... 36
STARTING SYSTEM................................................... 37
Wiring Diagram - START -....................................... 37
Trouble Diagnoses................................................... 40
Construction ............................................................. 41
Removal and Installation ......................................... 47
Inspection................................................................. 47
Assembly ................................................................. 51
Service Data and Specifications (SDS)................... 52
CHARGING SYSTEM.................................................. 53
Wiring Diagram - CHARGE -................................... 53
Trouble Diagnoses................................................... 55
Construction ............................................................. 56
Removal and Installation ......................................... 60Disassembly............................................................. 60
Inspection................................................................. 60
Assembly ................................................................. 62
Service Data and Specifications (SDS)................... 63
COMBINATION SWITCH............................................. 64
Combination Switch/Check ...................................... 64
STEERING SWITCH.................................................... 65
Check ....................................................................... 65
Replacement ............................................................ 66
HEADLAMP (WITHOUT DAYTIME LIGHT
SYSTEM) - CONVENTIONAL TYPE -........................ 67
Wiring Diagram - H/LAMP -..................................... 67
Trouble Diagnoses................................................... 69
Bulb Replacement ................................................... 70
Aiming Adjustment ................................................... 70
HEADLAMP (WITHOUT DAYTIME LIGHT
SYSTEM) - XENON TYPE -........................................ 72
System Description .................................................. 72
Wiring Diagram - H/LAMP -..................................... 73
Trouble Diagnoses................................................... 75
Bulb Replacement ................................................... 76
HEADLAMP - DAYTIME LIGHT SYSTEM -............... 78
Schematic ................................................................ 78
Wiring Diagram - DTRL - ......................................... 79
HEADLAMP - DAYTIME LIGHT SYSTEM WITH
XENON TYPE -............................................................ 82
Schematic ................................................................ 82
Wiring Diagram - DTRL - ......................................... 83
HEADLAMP - DAYTIME LIGHT SYSTEM -............... 86
Trouble Diagnoses................................................... 86
EL

GROUND CONNECT TO CONN. CELL CODE
E11/E37 ACCESSORY RELAY E95 EL-POWER, EL-HORN
BRAKE FLUID LEVEL SWITCH E14 EL-WARN
CLEARANCE LAMP LH E85 EL-TAIL/L
CLEARANCE LAMP RH E87 EL-TAIL/L
COMBINATION METER (FRONT FOG LAMP INDICATOR) (Mod-
els before VIN - P11U0548750)E124 EL-F/FOG
COMBINATION METER (FRONT FOG LAMP INDICATOR) (Mod-
els after VIN - P11U0548750)E131 EL-F/FOG
COMBINATION METER (REAR FOG LAMP INDICATOR) (Models
before VIN - P11U0548750)E124 EL-R/FOG
COMBINATION METER (REAR FOG LAMP INDICATOR) (Models
after VIN - P11U0548750)E131 EL-R/FOG
COMBINATION METER (HIGH BEAM INDICATOR) (Models after
VIN - P11U0548750)E131 EL-H/LAMP, EL-DTRL
COMBINATION METER (ILLUMINATION) (Models after VIN -
P11U0548750)E131 EL-ILL
COMBINATION METER (TURN) (Models before VIN -
P11U0548750)E124 EL-TURN
COMBINATION METER (TURN) (Models after VIN -
P11U0548750)E131 EL-TURN
COMBINATION SWITCH (FRONT WIPER SWITCH) E114 EL-WIPER, EL-WIP/R
COMBINATION SWITCH (TRIP COMPUTER SWITCH) E114 EL-METER
COMBINATION SWITCH (TURN SIGNAL SWITCH) E111 EL-TURN
COOLING FAN MOTOR-1 (Gasoline engine) E19 HA-A/C, EC-COOL/F
COOLING FAN MOTOR-2 (CD20 engine) E18 HA-A/C, EC-COOL/F
COOLING FAN MOTOR-2 (QG18, SR20 engine) E28 HA-A/C, EC-COOL/F
COOLING FAN MOTOR-2 (With A/C) (GA16 engine) E94 HA-A/C, EC-COOL/F
COOLING FAN RELAY-2 (CD engine) E54 HA-A/C, EL-COOL/F
DAYTIME LIGHT CONTROL UNIT E117 EL-DTRL
FRONT FOG LAMP LH (Type-1) E6 EL-F/FOG
FRONT FOG LAMP LH (Type-2) E146 EL-F/FOG
FRONT FOG LAMP RH (Type-1) E34 EL-F/FOG
FRONT FOG LAMP RH (Type-2) E147 EL-F/FOG
FRONT TURN SIGNAL LAMP LH E8 EL-TURN, EL-THEFT
FRONT TURN SIGNAL LAMP RH E36 EL-TURN, EL-THEFT
FRONT WIPER MOTOR E62 EL-WIPER
FRONT WIPER RELAY E70 EL-WIPER
HEAD LAMP RELAY LH E74 EL-H/LAMP, EL-DTRL
HEAD LAMP RELAY RH E75 EL-HLC, EL-H/LAMP, EL-DTRL
HEAD LAMP WASHER MOTOR E38 EL-HLC
HEAD LAMP WASHER SWITCH E128 EL-HLC, EL-ILL
HEADLAMP AIMING MOTOR LH E4 EL-H/AIM
HEADLAMP AIMING MOTOR RH E33 EL-H/AIM
HEADLAMP LH E5 EL-H/LAMP, EL-DTRL
HEADLAMP RH E32 EL-H/LAMP, EL-DTRL
HOOD SWITCH E12 EL-THEFT
NATS IMMU E121 EL-NATS
POWER STEERING OIL PRESSURE SWITCH (Gasoline) E60 EC-PST/SW
RDNT BRAKE SWITCH (LHD) (CD20 engine) E122 EC-BRK/SW
REAR WIPER RELAY E52 EL-WIP/R
SEDIMENTER SENSOR E13 EL-WARN
SIDE TURN SIGNAL LAMP LH (Type-1) E9 EL-TURN, EL-THEFT
SIDE TURN SIGNAL LAMP LH (Type-2) E148 EL-TURN, EL-THEFT
SIDE TURN SIGNAL LAMP RH (Type-1) E59 EL-TURN, EL-THEFT
SIDE TURN SIGNAL LAMP RH (Type-2) E149 EL-TURN, EL-THEFT
TRIPLE-PRESSURE SWITCH (CD engine) E20 HA-A/C, EC-COOL/F
WASHER LEVEL SWITCH E39 EL-WARN
E68 ALTERNATOR (GA engine) E71 EL-CHARGE
E88 ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) E78 BR-ABS
F9 ALTERNATOR (QG16, QG18, SR20, CD engine) F10 EL-CHARGE
GROUND DISTRIBUTION
EL-24

Wiring Diagram—HORN—
Type-1
YEL180C
BATTERY
Refer to EL-POWER.: With gasoline engine
: With diesel engine
: With steering wheel switch
: Without steering wheel switch
HORN
RELAY
HORN
LOWHORN
HIGH
OFFON HORN
SWITCHHORN
SWITCH
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B)
*: This connector is not shown in“HARNESS LAYOUT”of EL section.OFFONFUSE
BLOCK
(J/B)
SPIRAL
CABLE
HORN, CIGARETTE LIGHTER AND CLOCK
EL-203