Nissan Terrano r20e. Manual — part 176
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SYSTEM — Engine control system
Malfunction
SYMPT
OM
Reference page
Feature of symptom
Check point
HARD/NO START/
RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE)
Malfunction indicator lamp illuminates.
Can be detected by CONSULT-II?
Fuel cut
NO START (with first firing)
NO START (without first firing)
HARD TO START WHEN ENGINE IS COLD
HARD TO START WHEN ENGINE IS HOT
AT IDLE
DURING DRIVING
WHEN DECELERATING
BLACK SMOKE
WHITE SMOKE
New
CT/CS
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
AP
HA
Mass
air
flow
sensor
circuit
open,
ground
short
q
q
short
q
Engine
coolant
temperature
sensor
circuit
open,
short
qqq
q
q
q
q
q
Compensation
according
to
engine
coolant
temperature
does
not
function.
V
ehicle
speed
sensor
circuit
open,
short
Control
sleeve
position
sensor
circuit
open,
short
qqq
qqq
Injection
timing
control
valve
circuit
open,
short
q
Injection
timing
cannot
be
con-
trolled.
ground
short
Accelerator
switch
(F/C)
circuit
open,
short
q
ground
short
Needle
lift
sensor
circuit
open,
short
q
EC-427
Fuel
cut
solenoid
valve
circuit
open,
ground
short
q
qqq
q
short
qqq
Engine
runs
on
after
turning
igni-
tion
switch
OFF
.
Fuel
temperature
sensor
circuit
open,
short
q
q
q
q
Compensation
for
amount
of
fuel
injected
according
to
fuel
tem-
perature
does
not
function.
Accelerator
position
sensor
circuit
open,
short
q
q
q
Crankshaft
position
sensor
(TDC)
cir-
cuit
open,
short
q
q
noise
qqq
TROUBLE DIAGNOSES
TD27Ti
Symptom Matrix Chart (Cont’d)
EC-341
![](/vehicles/gon/meve/urrn/ghea.png)
SYSTEM — Engine control system
Malfunction
SYMPT
OM
Reference
page
Feature of symptom
Check point
HARD/NO START/
RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER
POOR ACCELERATION
HI IDLE
LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE)
Malfunction indicator lamp illuminates.
Can be detected by CONSULT-II?
Fuel cut
NO START (with first firing)
NO START (without first firing)
HARD TO START WHEN ENGINE IS COLD
HARD TO START WHEN ENGINE IS HOT
AT IDLE
DURING DRIVING
WHEN DECELERATING
BLACK SMOKE
WHITE SMOKE
New
CT/CS
AA
AB
AC
AD
AE
AF
AG
AH
AJ
AK
AL
AM
AP
HA
Start
signal
circuit
open,
short
EC-449
Start
control
does
not
function.
Air
conditioner
switch
circuit
open,
ground
short
Air
Conditioner
does
not
stop
operating.
short
Air
Conditioner
does
not
work.
Ignition
switch
circuit
open
q
qqq
short
Engine
does
not
stop.
Power
supply
for
ECM
circuit
open
qqq
short
Throttle
control
solenoid
valve
circuit
open,
short
EC-435
Does
not
operate.
ground
short
q
Does
not
stop
operating.
EGRC-solenoid
valve
A,
B
circuit
open,
short
ground
short
q
Does
not
stop
operating.
Glow
relay
circuit
open
qqqq
q
EC-389
Glow
lamp
does
not
turn
on.
short
Glow
lamp
does
not
turn
of
f.
ECM
relay
(Self-shut
of
f)
circuit
open
qqq
q
short
Ground
short
makes
engine
unable
to
stop.
Air
conditioner
relay
circuit
open
Air
conditioner
does
not
operate.
short
Air
conditioner
does
not
stop
operating.
ECM,
Connector
circuit
open,
short
qqqqqqqqqqqqq
q
qqqqqqqqqqq
EC-346,
452
TROUBLE DIAGNOSES
TD27Ti
Symptom Matrix Chart (Cont’d)
EC-342
![](/vehicles/gon/meve/urrn/uthandusp.png)
CONSULT-II Reference Value in Data Monitor
Mode
Remarks:
I
Specification data are reference values.
I
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
CKPS
⋅
RPM (TDC)
I
Tachometer: Connect
I
Run engine and compare tachometer indication with the CONSULT-II value.
Almost the same speed as the CON-
SULT-II value.
CKPS
⋅
RPM (REF)
CMPS
⋅
RPM-PUMP
COOLAN TEMP/S
I
Engine: After warming up
More than 70°C (158°F)
VHCL SPEED SE
I
Turn drive wheels and compare speedometer indication with the CONSULT-II
value
Almost the same speed as
the CONSULT-II value
FUEL TEMP SEN
I
Engine: After warming up
More than 40°C (104°F)
ACCEL POS SEN
I
Ignition switch: ON
(Engine stopped)
Accelerator pedal: release
0.40 - 0.60V
Accelerator pedal: depress
Approx. 4.0V
FULL ACCEL SW
I
Ignition switch: ON
(Engine stopped)
Accelerator pedal: depress
ON
Except above
OFF
ACCEL SW (FC)
I
Ignition switch: ON
(Engine stopped)
Accelerator pedal: release
CLOSE
Accelerator pedal: slightly open
OPEN
OFF ACCEL SW
I
Ignition switch: ON
(Engine stopped)
Accelerator pedal: release
ON
Accelerator pedal: slightly open
OFF
C/SLEEV POS/S
I
Engine: After warming up, idle the engine
1.0 - 3.5V
BATTERY VOLT
I
Ignition switch: ON (Engine stopped)
11 - 14V
P/N POSI SW
I
Ignition switch: ON
Shift lever: Neutral
ON
Except above
OFF
START SIGNAL
I
Ignition switch: ON
,
START
,
ON
OFF
,
ON
,
OFF
AIR COND SIG
I
Engine: After warming up, idle the
engine
Air Conditioner switch: “OFF”
OFF
Air Conditioner switch: “ON”
(Compressor operates.)
ON
IGN SW
I
Ignition switch: ON
,
OFF
ON
,
OFF
MAS AIR/FL SE
I
Engine: After warming up
I
Air Conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
1.5 - 2.1V
2,000 rpm
2.3 - 2.9V
ACT INJ TIMG
I
Engine: After warming up
I
Air Conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
−5.0° to −9.0°
2,000 rpm
−5.0° to −18.0°
DECELER F/CUT
I
Engine: After warming up
Idle
OFF
When accelerator pedal is released
quickly with engine speed at 3,000 rpm
or more.
ON
FUEL CUT S/V
I
Ignition switch: ON
,
OFF
ON
,
OFF
AIR COND RLY
I
Air Conditioner switch: OFF
,
ON
OFF
,
ON
GLOW RLY
I
Refer to EC-389.
TROUBLE DIAGNOSES
TD27Ti
EC-343
![](/vehicles/gon/meve/urrn/hetheamplm.png)
MONITOR ITEM
CONDITION
SPECIFICATION
EGRC SOL/V A
I
Engine: After warming up
I
Air Conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
ON
3,200 rpm
OFF
EGRC SOL/V B
I
Engine: After warming up
I
Air Conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
ON
3,000 rpm
OFF
THROT RLY
I
Engine: After warming up
I
Air Conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
ON
3,000 rpm
OFF
TROUBLE DIAGNOSES
TD27Ti
CONSULT-II Reference Value in Data Monitor
Mode (Cont’d)
EC-344
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