NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS
EC-51
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MBWA1363E

EC-52
TROUBLE DIAGNOSIS
ECM Harness Connector Terminal Layout
EBS01KCZ
ECM Terminals And Reference ValueEBS01KD0
PREPARATION
1. ECM located in the engine room passenger side behind coolant
reservoir tank.
2. Remove ECM harness connector.
3. When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown in the figure.
4. Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.
lUse extreme care not to touch 2 pins at one time.
lData is for comparison and may not be exact.
ECM INSPECTION TABLE
Remarks: Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
MBIB0045E
BBIA0537E
PBIB1512E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
1
2
3B
B
BECM ground[Engine is running]
lIdle speedApproximately 0V

TROUBLE DIAGNOSIS
EC-53
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4
5V
GFuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)[Engine is running]
lWarm-up condition
lIdle speed
NOTE:
The pulse cycle changes depending on rpm
at idleApproximately 7.5V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 8.0V
6BRTurbocharger boost control
solenoid valve[Engine is running]
lWarm-up condition
lIdle speedApproximately 6.3V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 8.6V
10 G Fuel pump[Engine is running]
lWarm-up condition
lIdle speedApproximately 5.8V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 5.5V
13 Y Heat up switch[Ignition switch ON]
lHeat up switch: OFFApproximately 0.3V
[Ignition switch ON]
lHeat up switch: ONBATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB1295E
MBIB1296E
MBIB0889E
MBIB0890E
MBIB0885E
MBIB0886E

EC-54
TROUBLE DIAGNOSIS
15 GRIntake air control valve con-
trol solenoid valve[Engine is running]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch OFF]
lFor a few seconds after turning ignition
switch OFFApproximately 0.3V
21
22
23
24G
P
W
WFuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3[Engine is running]
lWarm-up condition
lIdle speed
NOTE:
The pulse cycle changes depending on rpm
at idleApproximately 7.5V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 8.0V
25
26
27
28Y
O
GR
VEGR volume control valve[Engine is running]
lWarm-up condition
lIdle speed0.1 - 14V
(Voltage signals of each ECM
terminals differ according to the
control position of EGR volume
control valve.)
29 B Fuel pump[Engine is running]
lWarm-up condition
lIdle speed0.5 - 1.0V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpm0.5 - 1.0V
37 G Glow relay Refer toEC-295, "
GLOW CONTROL SYSTEM". TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB1297E
MBIB1298E
MBIB0887E
MBIB0888E

TROUBLE DIAGNOSIS
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40
41
42
43W
GR
W
BFuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1[Engine is running]
lWarm-up condition
lIdle speed
NOTE:
The pulse cycle changes depending on rpm
at idleApproximately 7.5V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 8.0V
44 WCrankshaft position sensor
power supply[Ignition switch ON]Approximately 5.3V
45 WCamshaft position sensor
power supply[Ignition switch ON]Approximately 5.3V
46 R Crankshaft position sensor[Engine is running]
lWarm-up condition
lIdle speed
NOTE:
The pulse cycle changes depending on rpm
at idleApproximately 3.7V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 3.7V
47 R Camshaft position sensor[Engine is running]
lWarm-up condition
lIdle speed
NOTE:
The pulse cycle changes depending on rpm
at idleApproximately 4.9V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpmApproximately 4.9V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB1297E
MBIB1298E
MBIB0879E
MBIB0880E
MBIB0877E
MBIB0878E

EC-56
TROUBLE DIAGNOSIS
48
49L
BFuel rail pressure sensor[Engine is running]
lWarm-up condition
lIdle speed1.7 - 2.0V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpm2.0 - 2.3V
50 YFuel pump temperature sen-
sor[Engine is running]
lWarm-up conditionApproximately 0.3 - 5.3V
Output voltage varies with fuel
pump temperature
51 SBEngine coolant temperature
sensor[Engine is running]
lWarm-up conditionApproximately 0.3 - 5.3V
Output voltage varies with engine
coolant temperature
52 BR Turbocharger boost sensor[Engine is running]
lWarm-up condition
lIdle speed2.1 - 2.4V
[Engine is running]
lWarm-up condition
lEngine speed: 2,000 rpm2.3 - 2.6V
53 W Refrigerant pressure sensor[Engine is running]
lWarm-up condition
lBoth A/C switch and blower switch: ON
(Compressor operates)1.0 - 4.0V
54 G Mass air flow sensor[Ignition switch: ON]Approximately 0.7V
[Engine is running]
lWarm-up condition
lIdle speed1.6 - 2.0V
[Engine is running]
lWarm-up condition
lEngine is revving from idle to about 4,000
rpm.1.6 - 2.0V to Approximately 4.3V
(Check for liner voltage rise in
response to engine being
increased to about 4,000 rpm)
55 WIntake air temperature sen-
sor[Engine is running]
lWarm-up conditionApproximately 0.3 - 5.2V
Output voltage varies with intake
air temperature
63 RFuel rail pressure sensor
power supply[Ignition switch ON]Approximately 5.3V
64 VSensor power supply
(Turbocharger boost sensor /
Refrigerant pressure sensor)[Ignition switch ON]Approximately 5.3V
65 BCrankshaft position sensor
ground[Ignition switch ON]Approximately 0.3V
66 BCamshaft position sensor
ground[Ignition switch ON]Approximately 0.3V
67 —Sensor ground
(Sensor shield circuit)[Ignition switch ON]Approximately 0.3V
68 WFuel rail pressure sensor
ground[Ignition switch ON]Approximately 0.3V
69 BFuel pump temperature sen-
sor ground[Ignition switch ON]Approximately 0.3V
70 LGEngine coolant temperature
sensor ground[Ignition switch ON]Approximately 0.3V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)

TROUBLE DIAGNOSIS
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EC71 LTurbocharger boost sensor
ground[Ignition switch ON]Approximately 0.3V
72 BRRefrigerant pressure sensor
ground[Engine is running]
lWarm-up condition
lIdle speedApproximately 0.3V
73 B Mass air flow sensor ground[Ignition switch ON]Approximately 0.3V
74 RIntake air temperature sen-
sor ground[Ignition switch ON]Approximately 0.3V
82 WAccelerator pedal position
sensor 1 power supply[Ignition switch ON]Approximately 5.3V
83 RAccelerator pedal position
sensor 1[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully released0.95 - 1.17V
[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully depressedMore than 4.6V
84 BAccelerator pedal position
sensor 1 ground[Ignition switch ON]Approximately 0.3V
85 —Sensor ground
(Accelerator pedal position
sensor shield circuit)[Ignition switch ON]Approximately 0.3V
87 P CAN communication line[Ignition switch ON]Approximately 2.0 - 2.6V
Output voltage varies with the
communication status.
89 SB Data link connector[Ignition switch ON]
lCONSULT-II: DisconnectedApproximately 0V - Battery volt-
age (11 - 14V)
90 WAccelerator pedal position
sensor 2 power supply[Ignition switch ON]Approximately 5.3V
91 RAccelerator pedal position
sensor 2[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully released0.58 - 0.78V
[Ignition switch ON]
lEngine: Stopped
lAccelerator pedal: Fully depressedMore than 2.3V
92 BAccelerator pedal position
sensor 2 ground[Ignition switch ON]Approximately 0.3V
95 L CAN communication line[Ignition switch ON]Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
99 V Start signal[Ignition switch ON]Approximately 0.3V
[Ignition switch START]BATTERY VOLTAGE
(11 - 14V)
100 V Stop lamp switch[Ignition switch OFF]
lBrake pedal: Fully releasedApproximately 0V
[Ignition switch OFF]
lBrake pedal: Slightly depressedBATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)

EC-58
TROUBLE DIAGNOSIS
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)101 W ASCD brake switch[Ignition switch ON]
lBrake pedal: Fully released (A/T)
lClutch pedal and brake pedal:
Fully released (M/T)BATTERY VOLTAGE
(11 - 14V)
[Ignition switch ON]
lBrake pedal: Slightly depressed (A/T)
lClutch pedal and/or brake pedal:
Slightly depressed (M/T)Approximately 0V
102 SB ASCD steering switch[Ignition switch ON]
lASCD steering switch: OFFApproximately 4.3V
[Ignition switch ON]
lON/OFF switch: PressedApproximately 0.3V
[Ignition switch ON]
lCANCEL switch: PressedApproximately 1.3V
[Ignition switch ON]
lRESUME/ACCELERATE switch: PressedApproximately 3.3V
[Ignition switch ON]
lSET/COAST switch: PressedApproximately 2.3V
103 BASCD steering switch
ground[Ignition switch ON]Approximately 0.3V
105 BR ECM relay (self shut-off)[Ignition switch ON]
[Ignition switch OFF]
lFor a few seconds after turning ignition
switch OFFApproximately 1.0V
[Ignition switch OFF]
lMore than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
107
108R
RIgnition switch[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
11 0G(A/T)
O (M/T)Park/Neutral position switch[Ignition switch ON]
lShift lever: P or N (A/T), Neutral (M/T)Approximately 0V
[Ignition switch ON]
lExcept the above positionBATTERY VOLTAGE
(11 - 14V)
113 BR ECM relay (self shut-off)[Ignition switch ON]
[Ignition switch OFF]
lFor a few seconds after turning ignition
switch OFFApproximately 1.0V
[Ignition switch OFF]
lMore than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
114 B ECM ground[Engine is running]
lIdle speedApproximately 0V
11 9
120R
GPower supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
121 VPower supply for ECM
(Back-up)[Ignition switch OFF]BATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)

TROUBLE DIAGNOSIS
EC-59
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EC
CONSULT-II Function (ENGINE)EBS01KD1
FUNCTION
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
lDiagnostic trouble codes
lFreeze frame dataDiagnostic test mode Function
Work supportThis mode enables a technician to adjust some devices faster and more accurately by following
the indications on the CONSULT-II unit.
Self-diagnostic results Self-diagnostic results such as DTC and freeze frame data can be read and erased quickly.*
Data monitor Input/Output data in the ECM can be read.
CAN diagnostic support monitor The results of transmit/receive diagnosis of CAN communication can be read.
Active testDiagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
Function testThis mode is used to inform customers when their vehicle condition requires periodic mainte-
nance.
ECM part number ECM part number can be read.

EC-60
TROUBLE DIAGNOSIS
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: ApplicableItemDIAGNOSTIC TEST MODE
SELF-DIAG RESULTS
DATA MON-
ITORACTIVE
TEST
DTCFREEZE
FRAME
DATA
ENGINE CONTROL COMPONENT PARTS
INPUTCrankshaft position sensor´´´
Camshaft position sensor´
Engine coolant temperature sensor´´´´
Vehicle speed signal´´´
Fuel pump temperature sensor´´
Accelerator pedal position sensor 1´´
Accelerator pedal position sensor 2´´
Fuel rail pressure sensor´´
Mass air flow sensor´´
Intake air temperature sensor´
Turbocharger boost sensor´´´
Refrigerant pressure sensor´
Battery voltage´´
Park/neutral position (PNP) switch´
Heat up switch´
Stop lamp switch´´
Barometric pressure sensor (built-into ECM)´´
ASCD steering switch´´
ASCD brake switch´´
ASCD clutch switch´´
OUTPUTFuel pump´´´
Fuel injector´´´
Glow relay´´
Cooling fan relay´´´
Turbocharger boost control solenoid valve´
Intake air control valve control solenoid valve
EGR volume control valve´´