NISSAN TERRANO 2004 Service Repair Manual

Diagnostic Procedure
INSPECTION START
Check fuel level, fuel supply system,
starter motor, etc.
OK
ENGRepair or replace.
Check that all glow plug connecting plate
nuts are installed correctly.
OK
ENGInstall correctly.
CHECK OVERALL FUNCTION.
Check entire glow control system.
NG
EOKCHECK COMPONENT
(Glow plug).
Refer to EC-419.
CHECK VOLTAGE BETWEEN GLOW
RELAY AND GROUND.
1. Disconnect glow relay.
2. Check voltage between glow relay con- nector terminal q
5and engine ground
with tester.
Voltage: Battery voltage
OK
ENG Check the following:
I80A fusible link in fusible
link box
I Harness continuity
between glow relay and
battery positive terminal.
If NG, replace fuse or fus-
ible link or repair harness
or connectors.
CHECK VOLTAGE BETWEEN GLOW
RELAY AND GROUND.
1. Turn ignition switch to ªONº position.
2. Check voltage between glow relay con- nector terminals q
2and engine ground
with tester.
Voltage: Battery voltage
OK
ENG Check the following:
I20A fusible link in fusible
link box
I ECM relay
I Harness continuity
between glow relay and
battery positive terminal.
If NG, replace fuse or fus-
ible link or repair harness
or connectors.
CHECK OUTPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM connector terminal
214and
glow relay connector terminal q
1. 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)
I Harness continuity
between glow relay and
ECM
If NG, repair harness or
connectors.
CHECK HARNESS CONTINUITY
BETWEEN GLOW RELAY AND GLOW
PLUG.
1. Disconnect glow plug connector.
2. Check harness continuity between glow relay connector terminal q
3and glow
plug connector terminal q
1. Refer to
wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following.
IHarness connectors
M740,E142
IHarness continuity
between glow relay and
glow plug
If NG, repair harness or
connectors.
qA
NEF504
MEC950D
MEC951D
H
H
H
H
H
H
H
H
DTC P0380 GLOW RELAY, DTC P0381 GLOW LAMPTD27Ti
EC-416
http://vnx.su/

qA
CHECK VOLTAGE BETWEEN COMBI-
NATION METER (GLOW INDICATOR)
AND GROUND.
1. Turn ignition switch ªOFFº.
2. Disconnect combination meter harness connector.
3. Check voltage between combination meter terminal q
28and ground.
Voltage: Battery voltage
OK
ENG Check the following.
I10A fuse
I Harness continuity
between combination
meter and 10A fuse
If NG, replace fuse or
repair harness or connec-
tors.
CHECK HARNESS CONTINUITY
BETWEEN COMBINATION METER AND
ECM.
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between combination meter terminal q
47and
ECM terminal221. Refer to wiring
diagram.
Continuity should exist.
If OK, check harness for short circuit.
OK
ENG Repair harness or connec-
tors.
CHECK COMPONENTS.
(Glow relay, Glow plug, Glow indicator).
Refer to ªCOMPONENT INSPECTIONº,
EC-419.
OK
ENGReplace malfunctioning
component(s).
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
YEC257A
H
H
H
H
H
H
DTC P0380 GLOW RELAY, DTC P0381 GLOW LAMPTD27Ti
Diagnostic Procedure (Cont'd)
EC-417
http://vnx.su/

System Operation Check
Set voltmeter between glow plug and engine body.
1. Pre-glow control
a. Turn ignition switch to ªONº position.
b. Read voltage and time.Battery voltage will continuously appear for about 20*
seconds after ignition switch is turned ªONº.
* Engine coolant temperature is higher than 20ÉC(68ÉF).
* Repeatedly turning the ignition switch to ªONº posi- tion and then back to ªLOCKº position may change
the glow time.
2. Intermediate-glow control
a. Turn ignition switch to ªLOCKº position. Wait at least 5 seconds.
b. Turn ignition switch to ªONº.
c. Read voltage. Battery voltage will intermittently appear for about 60
seconds after pre-glow control time has elapsed.
3. After-glow control Start engine and read voltage and time.Battery voltage will appear for max. 10 minutes.
When engine coolant temperature is lower than 50ÉC
(122ÉF).
NEF506
NEF726
NEF727
NEF728
DTC P0380 GLOW RELAY, DTC P0381 GLOW LAMPTD27Ti
EC-418
http://vnx.su/

Component Inspection
GLOW RELAY
1. Check relay terminalsq1andq2for coil continuity.
Continuity should exist.
2. Check relay operation by applying battery voltage across relay coil terminals.
Coil voltage at relay terminals
q
1andq2
Continuity at relay terminals
q
5andq3
0V
No
12V Yes
GLOW PLUG
1. Remove glow plug connecting plate.
2. Check each glow plug for continuity.
Continuity should exist:Approximately 0.5W [at 25ÉC (77ÉF)]
I If NG, replace glow plug.
3. Install glow plug connecting plate securely.
I Do not bump glow plug heating element. If it is bumped,
replace glow plug with new one. [If glow plug is dropped
from a height above 10 cm (3.94 in), replace with new one.]
I If glow plug installation hole is contaminated with carbon,
remove using a reamer or suitable tool.
I Hand-tighten glow plug by turning it 2 to 3 times, then
tighten using a tool to specified torque.
:15-20N ×m (1.5 - 2.0 kg-m, 11 - 14 ft-lb)
GLOW INDICATOR
1. Turn ignition switch ªOFFº.
2. Disconnect combination meter harness connector.
3. Check continuity between terminals below.
Combination meter
(Glow indicator) CONDITION 1
+28
Continuity should not
exist.
þ47
CONDITION 2 þ28
Continuity should
exist.
+47
IF NG, repair or replace combination meter (Glow indicator). Refer
to EL section.
SEC564B
NEF507
SEC565B
YEC258A
DTC P0380 GLOW RELAY, DTC P0381 GLOW LAMPTD27Ti
EC-419
http://vnx.su/

Component Description
VEHICLE SPEED SENSOR (VSS)
The vehicle speed sensor is installed in the combination meter. It
contains a pulse generator which provides a vehicle speed signal
to the speedometer. The speedometer then sends a signal to the
ECM.
On Board Diagnosis Logic
DTCMalfunction is detected when .... Check Items
(Possible Cause)
P0500
0104 I
The almost 0 km/h (0 mph) signal from vehicle speed
sensor is sent to ECM even when vehicle is being
driven. I
Harness or connector
(The vehicle speed sensor circuit is open or short-
circuited.)
I Vehicle speed sensor
Overall Function Check
Use this procedure to check the overall function of the vehicle
speed sensor circuit. During this check, a DTC might not be con-
firmed.
WITH CONSULT-II
1) Jack up drive wheels.
2) Start engine.
3) Read vehicle speed sensor signal in ªDATA MONITORº mode
with CONSULT-II.
The vehicle speed on CONSULT-II should be able to exceed 10
km/h (6 mph) when rotating wheels with suitable gear position.
WITHOUT CONSULT-II
1) Jack up drive wheels.
2) Rotate drive wheel by hand.
3) Check voltage between ECM connector terminal
417and body
ground with tester.
Voltage should vary between approx. 0 - Battery voltage.
AEC110
SEF864Y
MEC970D
DTC P0500 VEHICLE SPEED SENTD27Ti
EC-420
http://vnx.su/

Wiring Diagram
YEC147A
DTC P0500 VEHICLE SPEED SENTD27Ti
EC-421
http://vnx.su/

Diagnostic Procedure
INSPECTION START
CHECK INPUT SIGNAL CIRCUIT.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect ECM harness connector and combination meter harness con-
nector.
3. Check harness continuity between ECM connector terminal
417and
combination meter connector terminal
q
26. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Check the following:
IHarness for open or
short-circuit between
ECM and combination
meter
If NG, repair harness or
connectors.
CHECK SPEEDOMETER FUNCTION.
Make sure that speedometer functions
properly.
OK
ENG Check the following:
IHarness for open or
short-circuit between
combination meter and
vehicle speed sensor
If NG, repair harness or
connectors.
Check vehicle speed sen-
sor and its circuit.
Refer to EL section.
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed.
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
H
H
H
H
H
DTC P0500 VEHICLE SPEED SENTD27Ti
EC-422
http://vnx.su/

Component Description
BRAKE SWITCH
The ECM receives signals from two brake switches. One is a con-
ventional brake lamp switch, the other is referred to as a redundant
brake switch 2.
In case the accelerator pedal does not return to the idle position
(pedal sticks), the driver will react by depressing the brake. In this
(emergency) situation, the ECM will disregard the accelerator pedal
signal and bring back the engine speed to 1,200 rpm.
On Board Diagnosis Logic
DTCMalfunction is detected when ... Check Items
(Possible Cause)
P0571
0807 I
Brake switch circuits are open or shorted. IHarness or connectors
(Brake switch circuits are open or shorted.)
I Stop lamp switch
I Brake switch 2
DTC Confirmation Procedure
WITH CONSULT-II
1) Turn ignition switch to ªONº position and select ªDATA MONI-
TORº mode with CONSULT-II.
2) Depress brake pedal for at least 1 minute.
WITHOUT CONSULT-II
1) Turn ignition switch to ªONº position.
2) Depress brake pedal for at least 1 minute.
3) Turn ignition switch to ªLOCKº position, wait at least 5 seconds and then turn to ªONº position.
4) Perform ªDiagnostic Test Mode IIº (Self-diagnostic results).
DTC P0571 BRAKE SWTD27Ti
EC-423
http://vnx.su/

Wiring Diagram
YEC148A
DTC P0571 BRAKE SWTD27Ti
EC-424
http://vnx.su/

Diagnostic Procedure
INSPECTION START
(Stop lamp switch circuit)
CHECK POWER SUPPLY.
1. Turn ignition switch to ªLOCKº position.
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch harness connector terminal q
1and engine ground.
Voltage: Battery voltage
OK
ENG
Check the following:
I15A fuse
I Harness for open or
short-circuit between
fuse block and stop
lamp switch
If NG, repair harness or
connectors.
CHECK STOP LAMP SWITCH INPUT
SIGNAL CIRCUIT.
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM connector terminal
405and stop
lamp switch terminal q2. Refer to wiring
diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Repair harness or connec-
tors.
CHECK BRAKE SWITCH INPUT SIGNAL
CIRCUIT.
1. Disconnect brake switch harness con-
nector.
2. Check harness continuity between brake switch terminal q
2and ECM ter-
minal416. Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short-circuit.
OK
ENG Repair harness or connec-
tors.
CHECK GROUND CIRCUIT.
1. Check harness continuity between
brake switch terminal q
1and ground.
Refer to wiring diagram.
Continuity should exist.
If OK, reconnect harness connectors.
OK
ENG Repair harness or connec-
tors.
CHECK COMPONENT.
(Stop lamp switch and brake switch)
Refer to ªCOMPONENT INSPECTIONº,
EC-426.
OK
Disconnect and reconnect harness con-
nectors in the circuit. Then retest.
Trouble is not fixed
Check ECM pin terminals for damage and
check the connection of ECM harness
connector. Reconnect ECM harness con-
nector and retest.
INSPECTION END
MEC952D
H
H
H
H
H
H
H
H
DTC P0571 BRAKE SWTD27Ti
EC-425
http://vnx.su/