1999 NISSAN PRIMERA Electronic Repair Manual

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Page 521 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual 26 CHECK IGNITION TIMING AGAIN
Check ignition timing again. Refer to Test No. 22.
OK©GO TO 28.
NG©GO TO 27.
27 CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM section.
O

Page 522 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual DTC Inspection Priority ChartNCEC0039If some DTCs are displayed at the same time, perform inspections one by one based on the following prior-
ity chart.
Priority Detected items (DTC)
1IP0100 Mass air

Page 523 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Fail-safe Chart=NCEC0040The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short cir-
cuit. When the ECM enters the fail-safe mode, the MI illuminates.
D

Fail-safe Chart=NCEC0040The ECM enters fail-safe mode if any of the following malfunctions is detected due to the open or short cir-
cuit. When the ECM enters the fail-safe mode, the MI illuminates.
DTC No.
Detected items Engine operating condition in fail-safe mode CON-
SULT-II
GSTECM*1
P0100 0100 Mass air flow sensor
circuitEngine speed will not rise more than 2,400 rpm due to the fuel cut.
P0115 0115 Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time
after turning ignition switch ªONº or ªSTARTº.
CONSULT-II displays the engine coolant temperature decided by ECM.
The radiator fan operates.
ConditionEngine coolant temperature decided
(CONSULT-II display)
Just as ignition switch is
turned ON or Start40ÉC (104ÉF)
More than approx. 4 minutes
after ignition ON or Start80ÉC (176ÉF)
Except as shown above40 - 80ÉC (104 - 176ÉF)
(Depends on the time)
P0120 0120 Throttle position sensor
circuitThrottle position will be determined based on the injected fuel amount and
the engine speed. Therefore, acceleration will be poor.
Condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
Unable to
access
ECMUnable to
access
Diagnostic
Test Mode
IIECMECM fail-safe activating condition
The computing function of the ECM was judged to be malfunctioning.
When the fail-safe system activates (i.e., if the ECM detects a malfunction
condition in the CPU of ECM), the MI on the instrument panel lights to warn
the driver.
However it is not possible to access ECM and DTC cannot be confirmed.
Engine control with fail-safe
When ECM fail-safe is operating, fuel injection, ignition timing, fuel pump
operation and IACV-AAC valve operation are controlled under certain limita-
tions.
ECM fail-safe operation
Engine speedEngine speed will not rise more than
3,000 rpm
Fuel injection Simultaneous multiport fuel injection system
Ignition timing Ignition timing is fixed at the preset valve
Fuel pumpFuel pump relay is ªONº when engine is
running and ªOFFº when engine stalls
IACV-AAC valve Full open
Replace ECM, if ECM fail-safe condition is confirmed.
*: In Diagnostic Test Mode II (Self-diagnostic results)
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG16I18DE
Fail-safe Chart
EC-81

Page 524 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual Symptom Matrix ChartNCEC0041SYSTEM Ð ENGINE CONTROL SYSTEMNCEC0041S01
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF

Page 525 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VI

Page 526 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual SYSTEM Ð ENGINE MECHANICAL & OTHERNCEC0041S03
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION

Page 527 of 2267

Page 528 of 2267

NISSAN PRIMERA 1999 Electronic Repair Manual CONSULT-II Reference Value in Data Monitor
Mode
NCEC0042Remarks:
ISpecification data are reference values.
ISpecification data are output/input values which are detected or supplied by the ECM at the

CONSULT-II Reference Value in Data Monitor
Mode
NCEC0042Remarks:
ISpecification data are reference values.
ISpecification 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. Specification data might be displayed even when igni-
tion timing is not adjusted to specification. This IGN TIMING monitors the data calculated by the ECM according to the input signals
from the camshaft position sensor and other ignition timing related sensors.)
IIf 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
ENG SPEEDITachometer: Connect
IRun engine and compare tachometer indication with the CONSULT-II
value.Almost the same speed as the
CONSULT-II value.
MAS A/F SE-B1IEngine: After warming up
IAir conditioner switch: OFF
IShift lever: ªNº
INo-loadIdle 1.0 - 1.7V
2,500 rpm 1.5 - 2.1V
COOLAN TEMP/SIEngine: After warming up More than 70ÉC (158ÉF)
HO2S1 (B1)
IEngine: After warming upMaintaining engine speed at 2,000
rpm0 - 0.3V+,0.6 - 1.0V
HO2S1 MNTR (B1)LEAN+,RICH
Changes more than 5 times
during 10 seconds.
HO2S2 (B1)
IEngine: After warming upRevving engine from idle to 3,000
rpm quickly0 - 0.3V+,0.6 - 1.0V
HO2S2 MNTR (B1)LEAN+,RICH
VHCL SPEED SEITurn drive wheels and compare speedometer indication with the CON-
SULT-II valueAlmost the same speed as the
CONSULT-II value
BATTERY VOLTIIgnition switch: ON (Engine stopped) 11 - 14V
THRTL POS SENIEngine: Idle Throttle valve fully closed 0.35 - 0.65V
IIgnition switch: ON
(Engine stopped)Throttle valve fully opened 3.7 - 4.5V
EGR TEMP SEN*IEngine: After warming up Less than 4.5V
START SIGNALIIgnition switch: ON,START,ON OFF,ON,OFF
CLSD THL/P SW
CLSD THL POSIEngine: Idle Throttle valve: Idle position ON
IIgnition switch: ON
(Engine stopped)Throttle valve: Slightly open OFF
AIR COND SIGIEngine: After warming up, idle
the engineA/C switch ªOFFº OFF
A/C switch ªONº
(Compressor operates)ON
P/N POSI SWIIgnition switch: ONShift lever ªNº ON
Except above OFF
PW/ST SIGNALIEngine: After warming up, idle
the engineSteering wheel in neutral position
(forward direction)OFF
The steering wheel is turned ON
IGNITION SWIIgnition switch: ON,OFF ON,OFF
*: If so equipped
TROUBLE DIAGNOSIS Ð GENERAL DESCRIPTIONQG16I18DE
CONSULT-II Reference Value in Data Monitor Mode
EC-86

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