2002 NISSAN TERRANO Service Repair Manual

6 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
FOR A/T MODELS
1 CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªP/N POSI SWº in ªDATA MONITORº mode with CONSULT-II.
3. Check ªP/N POSI SWº signal under the following conditions.
SEF049Y
Without CONSULT-II
1. Turn ignition switch ªONº.
2. Check voltage between ECM terminal 22 and ground under the following conditions.
SEF419Y
OK or NG
OKEINSPECTION END
NGEGO TO 2.
PARK/NEUTRAL POSITION (PNP) SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-255

2 CHECK PNP RELAY CIRCUIT
Without CONSULT-II
1. Turn ignition switch ªOFFº.
2. Disconnect Park/Neutral position relay harness connector.
MEC029E
3. Turn ignition switch ªONº.
4. Check voltage between Park/Neutral position relay terminal 2 and ground under the following conditions.
MEC981D
MTBL1320
OK or NG
OKEGO TO 4.
NGEGO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
I10A fuse
IHarness connectors F93, M788 (LHD models)
IPark/Neutral position switch
IHarness for between park/neutral position relay and fuse
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-256

4 CHECK PNP RELAY INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect park/neutral position switch and park/neutral position relay harness connectors.
3. Check harness continuity between PNP switch terminal 2 and PNP relay terminals 2. Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OKEGO TO 5.
NGERepair open circuit or short to ground or short to power in harness or connectors.
5 CHECK GROUND CIRCUIT
1. Disconnect PNP relay harness connector.
2. Check continuity between PNP relay terminal 1 and ground. Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OKEGO TO 6.
NGERepair open circuit or short to ground or short to power in harness or connectors.
6 CHECK ECM INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector and PNP relay harness connector.
2. Check 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
OKEGO TO 8.
NGEGO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
IHarness connectors F93, M788 (LHD models)
IHarness for open or short between PNP relay and ECM
ERepair open circuit or short to ground or short to power in harness or connectors.
8 CHECK PARK/NEUTRAL POSITION (PNP) SWITCH
Refer to ªTROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMSº in AT section.
OK or NG
OKEGO TO 9.
NGEReplace park/neutral position (PNP) switch.
9 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
PARK/NEUTRAL POSITION (PNP) SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-257

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 switch ON
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 ITEM CONDITION SPECIFICATION
WARM UP SWIIgnition switch: ONHeat 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
COLORITEM CONDITIOND ATA
(DC Voltage and Pulse
Signal)
59 G Heat up switchIgnition switch ªONº
Heat up switch is ªOFFº.0V
Ignition switch ªONº
Heat up switch is ªONº.BATTERY VOLTAGE
(11 - 14V)
HEAT UP SWITCHZD30DDTi
EC-258

Wiring Diagram
LHD MODELS
YEC198A
HEAT UP SWITCHZD30DDTi
EC-259

Diagnostic Procedure
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye sEGO TO 2.
NoEGO TO 3.
2 CHECK OVERALL FUNCTION
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
OKEINSPECTION END
NGEGO TO 4.
3 CHECK OVERALL FUNCTION
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
OKEINSPECTION END
NGEGO TO 4.
HEAT UP SWITCHZD30DDTi
EC-260

4 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
OKEGO TO 6.
NGEGO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
IFuse block (J/B) connector F48
I10A fuse
IHarness 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.
6 CHECK HEAT UP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN OR 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
OKEGO TO 7.
NGERepair open circuit or short to ground or short to power in harness or connectors.
HEAT UP SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-261

7 CHECK HEAT UP SWITCH
Check continuity between heat up switch terminals 1 and 2 under the following conditions.
MEC984D
MTBL1321
OK or NG
OKEGO TO 8.
NGEReplace heat up switch.
8 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-78.
EINSPECTION END
HEAT UP SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-262