Infiniti M35/M45 Y50. Manual — part 412
TROUBLE DIAGNOSIS
EC-121
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
98
R
Accelerator pedal position
sensor 2
[Ignition switch: ON]
●
Engine stopped
●
Accelerator pedal: Fully released
0.20 - 0.55V
[Ignition switch: ON]
●
Engine stopped
●
Accelerator pedal: Fully depressed
1.85 - 2.40V
99
Y
ICC steering switch
(models with ICC system)
[Ignition switch: ON]
●
ICC steering switch: OFF
Approximately 4.3V
[Ignition switch: ON]
●
MAIN switch: Pressed
Approximately 0V
[Ignition switch: ON]
●
CANCEL switch: Pressed
Approximately 1.3V
[Ignition switch: ON]
●
RESUME/ACCELERATE switch: Pressed
Approximately 3.7V
[Ignition switch: ON]
●
SET/COAST switch: Pressed
Approximately 3V
[Ignition switch: ON]
●
DISTANCE switch: Pressed
Approximately 2.2V
99
Y
ASCD steering switch
(models with ASCD system)
[Ignition switch: ON]
●
ASCD steering switch: OFF
Approximately 4V
[Ignition switch: ON]
●
MAIN switch: Pressed
Approximately 0V
[Ignition switch: ON]
●
CANCEL switch: Pressed
Approximately 1V
[Ignition switch: ON]
●
RESUME/ACCELERATE switch: Pressed
Approximately 3V
[Ignition switch: ON]
●
SET/COAST switch: Pressed
Approximately 2V
101
V/R
Stop lamp switch
[Ignition switch: OFF]
●
Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]
●
Brake pedal: Slightly depressed
BATTERY VOLTAGE
(11 - 14V)
102
G
PNP switch
[Ignition switch: ON]
●
Selector lever: P or N
Approximately 0V
[Ignition switch: ON]
●
Selector lever: Except above
BATTERY VOLTAGE
(11 - 14V)
104
O
Throttle control motor relay
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
0 - 1.0V
106
LG
Accelerator pedal position
sensor 1
[Ignition switch: ON]
●
Engine stopped
●
Accelerator pedal: Fully released
0.4 - 1.1V
[Ignition switch: ON]
●
Engine stopped
●
Accelerator pedal: Fully depressed
3.7 - 4.8V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
EC-122
[VQ35DE]
TROUBLE DIAGNOSIS
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
SC-5, "SPECIFIC GRAVITY CHECK"
107
V/W
Fuel tank temperature sen-
sor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.
108
BR
ICC brake switch (models
with ICC system)
ASCD brake switch (models
with ASCD system)
[Ignition switch: ON]
●
Brake pedal: Slightly depressed
Approximately 0V
[Ignition switch: ON]
●
Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14V)
109
L
Ignition switch
[Ignition switch: OFF]
0V
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
111
SB
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch: OFF]
●
For a few seconds after turning ignition
switch OFF
0 - 1.5V
[Ignition switch: OFF]
●
More than a few seconds after turning igni-
tion switch OFF
BATTERY VOLTAGE
(11 - 14V)
113
GR
Fuel pump relay
[Ignition switch: ON]
●
For 1 second after turning ignition switch ON
[Engine is running]
0 - 1.5V
[Ignition switch: ON]
●
More than 1 second after turning ignition
switch ON
BATTERY VOLTAGE
(11 - 14V)
115
116
B
B
ECM ground
[Engine is running]
●
Idle speed
Body ground
117
GR/L
EVAP canister vent control
valve
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
119
120
R
R
Power supply for ECM
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
121
L
Power supply for ECM
(Back-up)
[Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
TROUBLE DIAGNOSIS
EC-123
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
CONSULT-II Function (ENGINE)
NBS004T7
FUNCTION
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
●
Diagnostic trouble codes
●
1st trip diagnostic trouble codes
●
Freeze frame data
●
1st trip freeze frame data
●
System readiness test (SRT) codes
●
Test values
Diagnostic test mode
Function
Work support
This 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 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
can be read and erased quickly.*
Data monitor
Input/Output data in the ECM can be read.
Data monitor (SPEC)
Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.
CAN diagnostic support
monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Active test
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
DTC & SRT confirmation
The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
Function test
This mode is used to inform customers when their vehicle condition requires periodic maintenance.
ECM part number
ECM part number can be read.
EC-124
[VQ35DE]
TROUBLE DIAGNOSIS
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
Item
DIAGNOSTIC TEST MODE
WORK
SUP-
PORT
SELF-DIAGNOS-
TIC RESULTS
DATA
MONI-
TOR
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
DTC & SRT
CONFIRMATION
DTC*1
FREEZE
FRAME
DATA*2
SRT
STATUS
DTC
WORK
SUP-
PORT
ENGINE CO
NTROL COMPONENT
P
ARTS
INPUT
Crankshaft position sensor (POS)
×
×
×
×
Camshaft position sensor
(PHASE)
×
×
×
×
Mass air flow sensor
×
×
×
Engine coolant temperature sen-
sor
×
×
×
×
×
Air fuel ratio (A/F) sensor 1
×
×
×
×
×
Heated oxygen sensor 2
×
×
×
×
×
Wheel sensor
×
×
×
×
Accelerator pedal position sensor
×
×
×
Throttle position sensor
×
×
×
×
Fuel tank temperature sensor
×
×
×
×
EVAP control system pressure
sensor
×
×
×
Intake air temperature sensor
×
×
×
×
Knock sensor
×
Refrigerant pressure sensor
×
×
Closed throttle position switch
(accelerator pedal position sensor
signal)
×
×
Air conditioner switch
×
×
Park/neutral position (PNP) switch
×
×
×
Stop lamp switch
×
×
×
Power steering pressure sensor
×
×
×
Battery voltage
×
×
Load signal
×
×
Fuel level sensor
×
×
×
Battery current sensor
×
×
×
ICC steering switch
×
×
×
ASCD steering switch
×
×
×
ICC brake switch
×
×
×
ASCD brake switch
×
×
×
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