2002 NISSAN TERRANO Service Repair Manual

Wiring Diagram
YEC250A
DTC P1620 ECM RLYTD27Ti
EC-447

Diagnostic Procedure
INSPECTION START
CHECK ECM POWER SUPPLY CIRCUIT.
1. Turn ignition switch ªOFFº.
2. Disconnect ECM relay.
3. Check voltage between ECM terminals
q
1,q3and ground with CONSULT-II or
tester.
Voltage: Battery voltage
OK
ENG
Check the following.
I20A fuse
IHarness for open and
short between ECM
relay and battery
If NG, repair open circuit or
short to ground or short to
power in harness or con-
nectors.
CHECK ECM INPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM
terminals
107,108,109and ECM
relay terminalq
5. Refer to Wiring Dia-
gram.
Continuity should exist.
4. Also check harness for short to ground
and short to power.
OK
ENG
Check the following.
IHarness connectors
M787,F66(LHD mod-
els)
IHarness for open or
short between ECM
relay and ECM
If NG, repair harness or
connectors.
CHECK ECM OUTPUT SIGNAL CIRCUIT
FOR OPEN AND SHORT.
1. Check harness continuity between ECM
terminal
325and ECM relay terminal
q
2. Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground
and short to power.
OK
ENG
Check the following.
IHarness connectors
M787,F66(LHD mod-
els)
IHarness for open or
short between ECM
relay and ECM
If NG, repair harness or
connectors.
CHECK ECM RELAY
1. Apply 12V direct current between ECM
relay terminalsq
1andq2.
2. Check continuity between ECM relay
terminalsq
3andq5.
12V (q
1-q2) applied: Continuity should
exist
No voltage applied: No continuity
OK
ENG
Replace ECM relay.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector.
INSPECTION END
YEC283A
MEC945D
NEF350
H
H
H
H
H
H
DTC P1620 ECM RLYTD27Ti
EC-448

Wiring Diagram
YEC153A
START SIGNALTD27Ti
EC-449

Diagnostic Procedure
INSPECTION START
CHECK OVERALL FUNCTION.
1. Turn ignition switch to ªONº posi-
tion.
2. Check ªSTART SIGNALº in ªDATA
MONITORº mode with CONSULT-
II.
--------------------------------------------------------------------------------------------------------------------------------------OR--------------------------------------------------------------------------------------------------------------------------------------
1. Turn ignition switch to ªSTARTº
position.
2. Check voltage between ECM con-
nector terminal
422and engine
ground.
Voltage:
Ignition switch ªSTARTº:
Battery voltage
Except above:
Approximately 0V
NG
EOK
INSPECTION END
Check if 40A fusible link is OK.
OKENG
Replace 40A fusible link.
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector,
ignition switch connector.
3. Check harness continuity between ECM
connector terminal
422and ignition
switch connector terminalq
5. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
ENG
Check the following:
IHarness connectors
M787,F66(LHD mod-
els)
ICondition and operations
of ignition switch
IHarness for open or
short-circuit between
ECM and ignition switch
If NG, repair ignition
switch, harness or con-
nectors.
Disconnect and reconnect harness connec-
tors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness con-
nector. Reconnect ECM harness connector
and retest.
INSPECTION END
IGN ªONº OFF
IGN ªSTARTº ON
PBIB0763E
MEC966D
H
H
H
H
H
H
START SIGNALTD27Ti
EC-450

Wiring Diagram
YEC162A
OIL PRESSURE SWITCHTD27Ti
EC-451

Wiring Diagram
YEC156A
MI & DATA LINK CONNECTORSTD27Ti
EC-452

General Specifications
Engine speed
Unit: rpm
Engine TD27Ti
Idle speed
A/C: ON725
845
Maximum engine speed 5,500
Pump numbers
Engine Part numberPump assembly num-
ber
TD27Ti 16700 7F410104701-2032
RNP11
Pump data is not yet available.
Refer to CALIBRATION STANDARD published
by BOSCH.
Injection Nozzle
INSPECTION AND ADJUSTMENT
Injection nozzle assembly
Unit: kPa (bar, kg/cm2, psi)
Initial injection pressure
New12,749 - 13,730 (127.5 - 137.3, 130 - 140,
1,849 - 1,991)
Used12,259 - 12,749 (122.6 - 127.5, 120 - 135,
1,706 - 1,849)
Inspection and Adjustment
Plunger lift mm (in)
at TDC0.275   0.02
(0.0108)   (0.0008)
Idle speed rpm
(ªNº or ªPº position)725 25
MASS AIR FLOW SENSOR
Supply voltage V Approximately 5
Output voltage V 1.5 - 2.7*
*: Engine is warmed up sufficiently and idling under no-load.
ENGINE COOLANT TEMPERATURE
SENSOR
Temperature ÉC (ÉF) Resistance kW
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
CONTROL SLEEVE POSITION SENSOR
Resistance [at 25ÉC (77ÉF)]WApproximately 6.1
INJECTION TIMING CONTROL VALVE
Resistance [at 25ÉC (77ÉF)]WApproximately 15
NEEDLE LIFT SENSOR
Resistance [at 25ÉC (77ÉF)]WApproximately 105
CRANKSHAFT POSITION SENSOR (TDC)
Resistance [at 25ÉC (77ÉF)]WApproximately 900
GLOW PLUG
Resistance [at 25ÉC (77ÉF)]W0.5
ACCELERATOR POSITION SENSOR
Throttle valve conditionsResistance kW
[at 25ÉC (77ÉF)]
Completely closed Approximately 1.2
Partially open 1.2 - 1.9
Completely open Approximately 1.9
FUEL TEMPERATURE SENSOR
Temperature ÉC (ÉF) Resistance kW
25 (77) Approximately 1.9
SERVICE DATA AND SPECIFICATIONS (SDS)TD27Ti
EC-453

NOTES