light NISSAN PATROL 2000 Electronic Owner's Manual

On board diagnostic system function
The on board diagnostic system has the following three func-
tions.
Diagnostic Test Mode KEY and ENG. Status Function Explanation of Function
Mode I Ignition switch in ON
position
Engine stopped
BULB CHECK This function checks the MI bulb for damage
(blown, open circuit, etc.).
If the MI does not come on, check MI circuit.
(See EC-1276.)
Engine running
MALFUNCTION
WARNINGThis is a usual driving condition. When ECM
detects a malfunction, the MI will light up to
inform the driver that a malfunction has been
detected.
Mode II Ignition switch in ON
position
Engine stopped
SELF-DIAGNOSTIC RESULTS This function allows DTCs to be read.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONZD30DDTi
Malfunction Indicator (MI) (Cont'd)
EC-1034

Relationship between MI, DTC, CONSULT-II and driving patterns
*1: When a malfunction is detected,
MI will light up.
*2: When the same malfunction is
detected in two consecutive driv-
ing patterns, MI will stay lit up.
*3: MI will go off after vehicle is
driven three times without any
malfunctions.*4: When a malfunction is detected
for the first time, the DTC will be
stored in ECM.
*5: The DTC will not be displayed any
longer after vehicle is driven 40
times without the same malfunc-
tion. (The DTC still remain in
ECM.)*6: Other screens except SELF-DI-
AGNOSTIC RESULTS & DATA
MONITOR (AUTO TRIG) cannot
display the malfunction. DATA
MONITOR (AUTO TRIG) can dis-
play the malfunction at the
moment it is detected.
SEF659SC
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONZD30DDTi
Malfunction Indicator (MI) (Cont'd)
EC-1037

CONSULT-II Reference Value in Data Monitor
Mode
Remarks:
+Specification data are reference values.
+Specification data are output/input values which are detected or supplied by the ECM at the connector.
* Specification data may not be directly related to their components signals/values/operations.
MONITOR ITEM CONDITION SPECIFICATION
CKPSzRPM (TDC)
+Tachometer: Connect
+Run engine and compare tachometer indication with the CONSULT-II value.Almost the same speed as the
CONSULT-II value.
CMPSzRPM-PUMP
COOLAN TEMP/S+Engine: After warming up More than 70ÉC (158ÉF)
VHCL SPEED SE+Turn drive wheels and compare speedometer indication with the CONSULT-II valueAlmost the same speed as the
CONSULT-II value
FUEL TEMP SEN+Engine: After warming up More than 40ÉC (104ÉF)
ACCEL POS SEN+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released 0.40 - 0.60V
Accelerator pedal: fully depressed Approx. 4.5V
FULL ACCEL SW+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully depressed ON
Except above OFF
ACCEL SW (FC)+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released CLOSE
Accelerator pedal: slightly open OPEN
OFF ACCEL SW+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released ON
Accelerator pedal: slightly open OFF
SPILL/V+Engine: After warming up Approx. 13ÉCA
BATTERY VOLT+Ignition switch: ON (Engine stopped) 11 - 14V
P/N POSI SW+Ignition switch: ONShift lever: Park/Neutral ON
Except above OFF
START SIGNAL+Ignition switch: ON®START®ON OFF®ON®OFF
AIR COND SIG+Engine: After warming up, idle the
engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
BRAKE SW+Ignition switch: ONBrake pedal: depressed ON
Brake pedal: released OFF
IGN SW+Ignition switch: ON®OFF ON®OFF
WARM UP SW+Ignition switch: ONHeat up switch: ON ON
Heat up switch: OFF OFF
MAS AIR/FL SE+Engine: After warming up
+Air conditioner switch: OFF
+Shift lever: Neutral position
+No-loadIdle 1.6 - 2.0V
DECELER F/CUT+Engine: After warming up Idle OFF
INJ TIMG C/V+Engine: After warming up, idle the engine. Approx. 50 - 70%
AIR COND RLY+Engine: After warming up, idle the
engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
GLOW RLY+Refer to EC-1221.
COOLING FAN+When cooling fan is stopped. OFF
+When cooling fan operates. ON
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONZD30DDTi
EC-1065

Description
The accelerator switch is installed to the accelerator pedal
assembly. The switch senses accelerator position and sends an
ON-OFF signal to the ECM. The ECM uses the signal to control
the fuel cut operation at deceleration for better fuel efficiency.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SW (FC)+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released CLOSE
Accelerator pedal: slightly open OPEN
DECELER F/CUT+Engine: After warming up Idle OFF
ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
29 R/L Accelerator switch (F/C)Ignition switch ªONº
Accelerator pedal fully releasedBATTERY VOLTAGE
(11 - 14V)
Ignition switch ªONº
Accelerator pedal depressedApproximately 0V
On Board Diagnosis Logic
Malfunction is detected when .... Check Items (Possible Cause)
+The OFF signal (short) is sent to the ECM for a certain period
of time even when the accelerator pedal is not being
depressed.+Harness or connectors
(The switch circuit is shorted.)
+Accelerator switch (F/C)
SEF687V
DTC 0203 ACCEL POS SW (F/C)ZD30DDTi
EC-1100

Description
The accelerator position sensor is installed on the upper end of the accelerator pedal assembly. The sen-
sor detects the accelerator position and sends a signal to the ECM. The ECM uses the signal to determine
the amount of fuel to be injected.
The accelerator position switch detects Off-accelerator switch signal and Full-accelerator switch signal and
send these signals to the ECM. The ECM will then determine engine idle conditions. These signals are also
used for diagnosing the accelerator position sensor.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
ACCEL POS SEN+Ignition switch: ON
(Engine stopped)Accelerator pedal: released 0.40 - 0.60V
Accelerator pedal: depressed Approx. 4.5V
FULL ACCEL SW+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully depressed ON
Except above OFF
OFF ACCEL SW+Ignition switch: ON
(Engine stopped)Accelerator pedal: fully released ON
Accelerator pedal: slightly open OFF
SEF861SA
DTC 0403 ACCEL POS SENSORZD30DDTi
EC-1125

ELECTRICAL SYSTEM
SECTION
EL
When you read wiring diagrams:
+Read GI section, ªHOW TO READ WIRING DIAGRAMSº.
When you perform trouble diagnoses, read GI section, ªHOW TO FOLLOW FLOW
CHART IN TROUBLE DIAGNOSESº and ªHOW TO PERFORM EFFICIENT DIAGNOSIS
FOR AN ELECTRICAL INCIDENTº.
+Check for any service bulletins before servicing the vehicle.
MODIFICATION NOTICE:
+Power window (driver's side only) with an interruption detection function has been adopted.
+ID code entry procedure of multi-remote control system has been changed.
+NATS (Nissan Anti-Theft System) has been adopted on ZD engine model.
CONTENTS
PRECAUTIONS AND PREPARATION............... 1003
Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº ... 1003
POWER SUPPLY ROUTING............................... 1004
Schematic ........................................................ 1004
Wiring Diagram Ð POWER Ð ........................ 1005
GROUND DISTRIBUTION/LHD MODELS.......... 1013
Engine Room Harness..................................... 1013
Engine Control Harness................................... 1016
Main Harness ................................................... 1017
Body Harness .................................................. 1020
Body No. 2 Harness ........................................ 1022
Back Door and Rear Window Defogger
Harness ............................................................ 1023
GROUND DISTRIBUTION/RHD MODELS......... 1024
Engine Room Harness..................................... 1024
Engine Control Harness................................... 1027
Main Harness ................................................... 1028
Body Harness .................................................. 1031
Body No. 2 Harness ........................................ 1033
Back Door and Rear Window Defogger
Harness ............................................................ 1034
BATTERY............................................................. 1035
Service Data and Specifications (SDS) ........... 1035
STARTING SYSTEM........................................... 1036
Wiring Diagram Ð START Ð/M/T Models...... 1036
Wiring Diagram Ð START Ð/A/T Models ...... 1037
Construction ..................................................... 1038Service Data and Specifications (SDS) ........... 1039
CHARGING SYSTEM.......................................... 1040
Wiring Diagram Ð CHARGE ........................... 1040
Construction ..................................................... 1041
Service Data and Specifications (SDS) ........... 1041
COMBINATION SWITCH.................................... 1042
Check ............................................................... 1042
STEERING SWITCH............................................ 1043
Check ............................................................... 1043
HEADLAMP Ð Daytime Light System Ð........ 1044
Wiring Diagram Ð DTRL Ð ............................ 1044
PARKING, LICENSE AND TAIL LAMPS........... 1046
Wiring Diagram Ð TAIL/L Ð/LHD Models ...... 1046
Wiring Diagram Ð TAIL/L Ð/RHD Models ..... 1048
STOP LAMP........................................................ 1050
Wiring Diagram Ð STOP/L Ð......................... 1050
BACK-UP LAMP.................................................. 1051
Wiring Diagram Ð BACK/L Ð/RHD Models ... 1051
FRONT FOG LAMP............................................. 1052
Wiring Diagram Ð F/FOG Ð .......................... 1052
REAR FOG LAMP............................................... 1053
Wiring Diagram Ð R/FOG Ð .......................... 1053
CORNERING LAMP............................................ 1054
Wiring Diagram Ð CORNER Ð/LHD Models . 1054
System Description/RHD Models .................... 1055
Wiring Diagram Ð CORNER Ð/RHD Models1056
Trouble Diagnoses/RHD Models ..................... 1057

EL

Wiring Diagram Ð DTRL Ð
TEL675B
HEADLAMP Ð Daytime Light System Ð
EL-1044

TEL211M
HEADLAMP Ð Daytime Light System Ð
Wiring Diagram Ð DTRL Ð (Cont'd)
EL-1045

System Description/RHD Models
The cornering lamp operation is controlled by the lighting switch which is built into the combination switch
and cornering lamp relay unit.
Power is supplied at all times
+to lighting switch terminal
V11
+through 10A fuse [No.15, located in the fuse block (J/B)].
Lighting operation by lighting switch
When lighting switch is in 1ST (or 2ND) position, power is supplied
+to cornering lamp relay unit terminal
V3
+through lighting switch terminalV12.
With the ignition switch in the ON or START position, power is supplied to cornering lamp relay unit termi-
nal
V2
+through 7.5A fuse [No.11, located in the fuse block (J/B)].
RH turn
When the turn signal lever is moved to the RH position, ground is supplied
+to cornering lamp relay unit terminal
V6
+through turn signal lamp switch terminalsV2andV1
+through body groundsE25andE40.
Power is supplied
+from terminal
V5of the cornering lamp relay unit
+to front combination lamp RH terminal
V3.
Ground is supplied to terminal
V4of front combination lamp RH through body groundsE25andE40.
The RH cornering lamp illuminates until the turn signal lever returns to NEUTRAL position.
LH turn
When the turn signal lever is moved to the LH position, ground is supplied
+to cornering lamp relay unit terminal
V8
+through turn signal lamp switch terminalsV3andV1
+through body groundsE25andE40.
Power is supplied
+from terminal
V10of the cornering lamp relay unit
+to front combination lamp LH terminal
V3.
Ground is supplied to terminal
V4of front combination lamp LH through body groundsE25andE40.
The LH cornering lamp illuminates until the turn signal lever returns to NEUTRAL position.
CORNERING LAMP
EL-1055

Trouble Diagnoses/RHD Models
Symptom Possible cause Repair order
Cornering lamps do not operate but
turn signal lamps operate.1. 10A fuse
2. Lighting switch circuit
3. Lighting switch
4. Cornering lamp relay unit1. Chack 10A fuse [No.
15, located in fuse block (J/B).]
Verify battery voltage is present at terminal
V11of light-
ing switch.
2. Check harness for open or short between lighting
switch and cornering lamp relay unit.
3. Check lighting switch.
4. Replace the cornering lamp relay unit.
LH cornering lamp does not operate
but RH cornering operates.1. Bulb
2. Cornering lamp LH circuit
3. Cornering lamp ground LH circuit1. Check bulb
2. Check harness for open or short between cornering
lamp LH and cornering lamp relay unit.
3. Check harness for open or short between cornering
lamp LH and ground.
RH cornering lamp does not operate
but LH cornering operates.1. Bulb
2. Cornering lamp RH circuit
3. Cornering lamp ground RH circuit1. Check bulb
2. Check harness for open or short between cornering
lamp RH and cornering lamp relay unit.
3. Check harness for open or short between cornering
lamp RH and ground.
CORNERING LAMP
EL-1057