Nissan Silvia. Manual — part 139
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
Engine
Cylinder head
5
5
5
5
5
5
5
5
EM section
Cylinder head gasket
4
3
Cylinder block
6
6
6
6
6
6
6
6
4
Piston
Piston ring
Connecting rod
Bearing
Crankshaft
Valve
mechanism
Timing chain
5
5
5
5
5
5
5
5
Camshaft
Intake valve
3
Exhaust valve
Exhaust
Exhaust manifold/Tube/Muffler/
Gasket
5
5
5
5
5
5
5
5
FE section
Three way catalyst
Lubrication
Oil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
5
5
5
5
5
5
5
5
MA, EM, LC
section
Oil level (Low)/Filthy oil
LC section
Cooling
Radiator/Hose/Radiator filler cap
5
5
5
5
5
5
5
4
5
Thermostat
5
Water pump
Water gallery
Cooling fan
5
EC section
Coolant level (low)/Contaminated
coolant
MA section
1 - 6: The numbers refer to the order of inspection.
GI
MA
EM
LC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-71
SYMPTOM
Reference
section
HARD/NO
ST
AR
T/REST
AR
T
(EXCP
.
HA)
ENGINE
ST
ALL
HESIT
A
TION/SURGING/FLA
T
SPOT
SP
ARK
KNOCK/DET
ONA
TION
LACK
OF
POWER/POOR
ACCELERA
TION
HIGH
IDLE/LOW
IDLE
ROUGH
IDLE/HUNTING
IDLING
VIBRA
TION
SLOW/NO
RETURN
T
O
IDLE
OVERHEA
TS/W
A
TER
TEMPERA
TURE
HIGH
EXCESSIVE
FUEL
CONSUMPTION
EXCESSIVE
OIL
CONSUMPTION
BA
TTER
Y
DEAD
(UNDER
CHARGE)
Warranty symptom code
AA AB AC AD AE AF AG
AH
AJ
AK AL AM HA
NATS (Nissan Anti-Theft System)
1
1
EC-34 or EL
section
1 - 6: The numbers refer to the order of inspection.
CONSULT-II Reference Value in Data Monitor
Mode
NMEC0042
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.
i.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in
spite of the ignition timing not being adjusted to the specification data. This IGN TIMING monitors the data calculated by the ECM
according to the signals input from the camshaft position sensor and other ignition timing related sensors.
I
If the real-time diagnosis results are NG and the on board diagnostic system results are OK when diagnosing the mass air flow sensor,
first check to see if the fuel pump control circuit is normal.
MONITOR ITEM
CONDITION
SPECIFICATION
CMPS-RPM (REF)
I
Tachometer: Connect
I
Run engine and compare tachometer indication with the CONSULT-II
value
Almost the same speed as
the CONSULT-II value.
MAS AIR/FL SE
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
0.8 - 1.5V
3,000 rpm
1.4 - 2.0V
A/F ALPHA
I
Engine: After warming up
Maintaining engine speed at 2,000
rpm
75 - 125%
COOLAN TEMP/S
I
Engine: After warming up
More than 70°C (158°F)
O2S1
I
Engine: After warming up
Maintaining engine speed at 2,000
rpm
0 - 0.3V
+,
Approx. 0.6 -
0.9V
M/R F/C MNT
LEAN
+,
RICH
Changes more than 5 times
during 10 seconds.
VHCL SPEED SE
I
Turn drive wheels and compare speedometer indication with the CON-
SULT-II value
Almost the same speed as
the CONSULT-II value.
BATTERY VOLT
I
Ignition switch: ON (Engine stopped)
11 - 14V
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Symptom Matrix Chart (Cont’d)
EC-72
MONITOR ITEM
CONDITION
SPECIFICATION
THRTL POS SEN
I
Engine: After warming up, idle
the engine
I
Ignition switch: ON
(Engine stopped)
Throttle valve: fully closed
0.35 - 0.65V
I
Engine: After warming up
I
Ignition switch: ON
(Engine stopped)
Throttle valve: fully opened
Approx. 4.0V
START SIGNAL
I
Ignition switch: ON
,
OFF
,
ON
OFF
,
ON
,
OFF
CLSD THL POS
I
Engine: After warming up, idle
the engine
Throttle valve: Idle position
ON
Throttle valve: Slightly open
OFF
AIR COND SIG
I
Engine: After warming up, idle
the engine
Air conditioner switch: “OFF”
OFF
Air conditioner switch: “ON”
(Compressor operates.)
ON
P/N POSI SW
I
Ignition switch: ON
Shift lever: “P” or “N” (A/T models)
Neutral (M/T models)
ON
Except above
OFF
PW/ST SIGNAL
I
Engine: After warming up, idle
the engine
Steering wheel in neutral position
(forward direction)
OFF
The steering wheel is turned
ON
LOAD SIGNAL
I
Ignition switch: ON
Rear window defogger switch “ON”
and/or lighting switch “2ND”
ON
Rear window defogger switch and
lighting switch “OFF”
OFF
INJ PULSE
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
1.7 - 2.5 msec
2,000 rpm
1.5 - 2.3 msec
IGN TIMING
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
15° BTDC
2,000 rpm
More than 25° BTDC
IACV-AAC/V
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
20 - 40%
2,000 rpm
—
W/G CONT S/V
I
Engine: After warming up
I
Air conditioner switch: “OFF”
I
Shift lever: “N”
I
No-load
Idle
0%
Racing up to 4,000 rpm
20%
AIR COND RLY
I
Air conditioner switch: OFF
,
ON
OFF
,
ON
FUEL PUMP RLY
I
Ignition switch is turned to ON (Operates for 1 second)
I
Engine running and cranking
ON
Except as shown above
OFF
INT/V TIM SOL
I
Lift up the vehicle
I
Engine: After warming up
Idle
OFF
I
Shift lever to any position except
“P” or “N” position
I
Quickly depress accelerator pedal,
then quickly release it
OFF
,
ON
,
OFF
GI
MA
EM
LC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-73
MONITOR ITEM
CONDITION
SPECIFICATION
COOLING FAN
I
After warming up engine, idle
the engine.
I
Air conditioner switch: “OFF”
Engine coolant temperature is 94°C
(201°F) or less
OFF
Engine coolant temperature is
between 95°C (203°F) and 100°C
(212°F)
LOW
Engine coolant temperature is 100°C
(212°F) or more
HIGH
Major Sensor Reference Graph in Data Monitor
Mode
NMEC0043
The following are the major sensor reference graphs in “DATA MONITOR” mode.
THRTL POS SEN, CLSD THL POS
NMEC0043S01
Below is the data for “THRTL POS SEN” and “CLSD THL POS” when depressing the accelerator pedal with
the ignition switch “ON”.
The signal of “THRTL POS SEN” should rise gradually without any intermittent drop or rise after “CLSD THL
POS” is changed from “ON” to “OFF”.
SEC355C
CMPS-RPM (REF), MAS AIR/FL SE, THRTL POS SEN, O2S1, INJ PULSE
NMEC0043S02
Below is the data for “CMPS-RPM (REF)”, “MAS AIR/FL SE”, “THRTL POS SEN”, “O2S1” and “INJ PULSE”
when revving engine quickly up to 4,800 rpm under no load after warming up engine sufficiently.
Each value is for reference, the exact value may vary.
SEC356C
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
CONSULT-II Reference Value in Data Monitor Mode (Cont’d)
EC-74
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