Ignition NISSAN TERRANO 2004 Service Repair Manual

2 CHECK PARK/NEUTRAL POSITION RELAY POWER SUPPLY CIRCUIT
Without CONSULT-II
1. Turn ignition switch ªOFFº.
2. Disconnect park/neutral position (PNP) relay harness connector.
MEC029E
3. Turn ignition switch ªONº.
4. Check voltage between PNP relay terminal 2 and ground under the following conditions.
MEC981D
MTBL1320
OK or NG
OK EGO TO 7.
NG EGO TO 3.
PARK/NEUTRAL POSITION (PNP) SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-261
http://vnx.su/

3 CHECK PARK/NEUTRAL POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect park/neutral position (PNP) switch harness connector.
MEC029E
3. Check voltage between PNP switch terminal 1 and ground.
YEC710A
Voltage: Battery voltageOK or NG
OK EGO TO 5.
NG EGO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F93, M788 (LHD models)
I Fuse block (J/B) connector F113 (LHD models)
I Fuse block (J/B) connector M834 (RHD models)
I 10A fuse
I Harness for open or short between PNP switch and fuse
ERepair harness or connectors.
5 CHECK PNP SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between PNP switch terminal 2 and PNP relay terminal 2.
Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 6.
NG ERepair open circuit or short to ground or short to power in harness or connectors.
PARK/NEUTRAL POSITION (PNP) SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-262
http://vnx.su/

6 CHECK PARK/NEUTRAL POSITION SWITCH
Refer to AT section, ªPark/neutral position switchº.OK or NG
OK EGO TO 11.
NG EReplace PNP switch.
7 CHECK PNP RELAY GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between PNP relay terminals 1, 6 and engine ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OK EGO TO 8.
NG ERepair open circuit or short to power in harness or connectors.
8 CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 22 and PNP relay terminal 7.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground or short to power.
OK or NG
OK EGO TO 10.
NG EGO TO 9.
9 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F93, M788 (LHD models)
I Harness for open or short between ECM and PNP relay
ERepair open circuit or short to ground or short to power in harness or connectors.
PARK/NEUTRAL POSITION (PNP) SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-263
http://vnx.su/

Component Description
The heat up switch is located on the lower side of the instrument
panel. This switch is used to speed up the heater's operation when
the engine is cold.
When the ECM received the heat up switch ªONº signal, the ECM
increases the engine idle speed to 1,100 to 1,200 rpm to warm up
engine quickly.
This system works when all conditions listed below are met.
Heat up switchON
Engine coolant temperature Below 105ÉC (221ÉF)
Shift lever ªPº or ªNº
Accelerator pedal Fully released
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEMCONDITION SPECIFICATION
WARM UP SW IIgnition switch: ON Heat up switch: ON ON
Heat up switch: OFF 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
COLOR ITEM CONDITION D ATA
(DC Voltage and Pulse Signal)
59 G Heat up switch Ignition switch ªONº
Heat up switch is ªOFFº.
0V
Ignition switch ªONº
Heat up switch is ªONº. BATTERY VOLTAGE
(11 - 14V)
HEAT UP SWITCHZD30DDTi
EC-265
http://vnx.su/

Diagnostic Procedure
1 INSPECTION START
Do you have CONSULT-II?YesorNo
Ye s EGO TO 2.
No EGO TO 3.
2 CHECK OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªWARM UP SWº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
SEF302Z
OK or NG
OK EGO TO 4.
NG EGO TO 5.
3 CHECK OVERALL FUNCTION-I
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 59 and ground under the following conditions.
SEF303Z
OK or NG
OK EGO TO 4.
NG EGO TO 5.
HEAT UP SWITCHZD30DDTi
EC-267
http://vnx.su/

4 CHECK OVERALL FUNCTION-II
Check heat up switch indicator in the heat up switch under the following conditions.
MTBL1846
OK or NG
OK EINSPECTION END
NG EGO TO 9.
5 CHECK HEAT UP SWITCH POWER SUPPLY CIRCUIT
1. Turn heat up switch ªOFFº.
2. Turn ignition switch ªOFFº.
3. Disconnect heat up switch harness connector.
4. Turn ignition switch ªONº.
5. Check voltage between heat up switch terminal 2 and ground with CONSULT-II or tester.
MEC983DVoltage: Battery voltage
OK or NG
OK EGO TO 7.
NG EGO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
IFuse block (J/B) connector F48
I 10A fuse
I Harness for open or short between heat up switch and fuse
ERepair open circuit or short to ground or short to power in harness or connectors.
7 CHECK HEAT UP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 59 and heat up switch terminal 1. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 7.
NG ERepair open circuit or short to ground or short to power in harness or connectors.
HEAT UP SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-268
http://vnx.su/

8 CHECK HEAT UP SWITCH
Check continuity between heat up switch terminals 1 and 2 under the following conditions.
MEC984D
MTBL1321
OK or NG
OK EGO TO 12.
NG EReplace heat up switch.
9 CHECK HEAT UP SWITCH INDICATOR CIRCUIT FOR OPEN AND SHORT
1. Turn heat up switch ªOFFº.
2. Turn ignition switch ªOFFº.
3. Disconnect heat up switch harness connector.
4. Check harness continuity between heat up switch terminals 1 and 4, heat up switch terminal 3 and body ground. Refer to Wir-
ing Diagram.
Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG
OK EGO TO 11.
NG EGO TO 10.
10 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F108, E225
I Harness for open and short between heat up switch and heat up switch
I Harness for open and short between heat up switch and body ground
ERepair open circuit or short to ground or short to power in harness or connectors.
11 CHECK HEAT UP SWITCH INDICATOR
Check continuity between heat up switch terminals 3 and 4.
Refer to Wiring Diagram.
Continuity should exist.
OK or NG
OK EGO TO 12.
NG EReplace heat up switch.
HEAT UP SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-269
http://vnx.su/

Description
SYSTEM DESCRIPTION
SensorInput Signal to ECM ECM
Function Actuator
Ignition switch Start signal Swirl
control valve
control Swirl control valve control solenoid valve
"Vacuum signal
Swirl control valve actuator "
Swirl control valve
Crankshaft position sensor (TDC) Engine speed
PNP switch Park/Neutral position signal
Engine coolant temperature sensor Engine coolant temperature
This system has a swirl control valve in the throttle body.
While idling and during low engine speed operation, the swirl con-
trol valve closes. Thus the velocity of the air in the intake passage
increases, promoting the vaporization of the fuel and producing a
swirl in the combustion chamber.
Because of this operation, this system tends to increase the burn-
ing speed of the gas mixture, improve fuel consumption, and
increase the stability in running conditions.
Also, except when idling and during low engine speed operation,
this system opens the swirl control valve. In this condition, this
system tends to increase power by improving intake efficiency via
reduction of intake flow resistance, intake flow.
The solenoid valve controls swirl control valve's shut/open condi-
tion. This solenoid valve is operated by the ECM.
PNP switch Engine speed
Engine cool-
ant tempera- ture Swirl control
valve control
solenoid valve Swirl control
valve
OFF Less than
1,250 rpm
Less than
50ÉC (122ÉF) OFF Open
More than
50ÉC (122ÉF) ON Closed
More than
1,250 rpm Less than
50ÉC (122ÉF) OFF Open
More than
50ÉC (122ÉF) OFF Open
ON Ð Ð OFF Open
SEF452Z
SWIRL CONTROL VALVE CONTROL SOLENOID VALVEZD30DDTi
EC-271
http://vnx.su/

4 CHECK VACUUM SOURCE
With CONSULT-II
1. Turn ignition switch ªOFFº.
2. Disconnect vacuum hose connected to swirl control valve actuator.
3. Start engine and let it idle.
4. Select ªSWIRL CONT S/V 1º in ªACTIVE TESTº mode with CONSULT-II.
5. Touch ªONº and ªOFFº alternately on CONSULT-II screen.
6. Check vacuum hose for vacuum existence under the following conditions.
MEC007E
MEC009E
MTBL1326
OK or NG
OK EGO TO 7.
NG EGO TO 6.
SWIRL CONTROL VALVE CONTROL SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-276
http://vnx.su/

5 CHECK VACUUM SOURCE
Without CONSULT-II
1. Turn ignition switch ªOFFº.
2. Disconnect vacuum hose connected to swirl control valve actuator.
3. Lift up the vehicle.
4. Start engine and warm it up to normal operating temperature.
5. Run engine at idle speed
6. Check vacuum hose for vacuum existence under the following conditions.
MEC009E
MTBL1327
OK or NG
OK EGO TO 7.
NG EGO TO 6.
SWIRL CONTROL VALVE CONTROL SOLENOID VALVEZD30DDTi
Diagnostic Procedure (Cont'd)
EC-277
http://vnx.su/