Infiniti M45 (Y34). Manual — part 354
TROUBLE DIAGNOSIS
EC-105
C
D
E
F
G
H
I
J
K
L
M
A
EC
108
B/W
Throttle position sensor 1
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully released
More than 0.36V
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
Less than 4.75V
109
LG
Mass air flow sensor
ground
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
110
G
EVAP control system pres-
sure sensor
[Ignition switch: ON]
Approximately 1.8 - 4.8V
113
R/Y
Accelerator pedal position
sensor signal output
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully released
0.4 - 0.8V
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
4.0 - 5.0V
114
R/L
Heated oxygen sensor 1
(bank 1)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,000 rpm.
0 - Approximately 1.0V (Periodi-
cally change)
115
L
Heated oxygen sensor 1
(bank 2)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,000 rpm.
0 - Approximately 1.0V (Periodi-
cally change)
116
G/R
Fuel pump control module
check
[Ignition switch: ON]
●
More than a few seconds after turning igni-
tion switch ON
Approximately 0V
[Ignition switch: ON]
●
For a few seconds after turning ignition
switch ON
[Engine is running]
●
Warm-up condition
●
Idle speed
4 - 6V
117
B/R
Accelerator pedal position
sensor 2
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully released
More than 0.18V
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
Less than 2.37V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
EC-106
TROUBLE DIAGNOSIS
118
R
Power steering pressure
sensor
[Engine is running]
●
Steering wheel: Being turned.
0.5 - 4.0V
[Engine is running]
●
Steering wheel: Not being turned.
0.4 - 0.8V
119
R/L
Fuel level sensor
[Ignition switch: ON]
Approximately 0 - 4.8V
Output voltage varies with fuel
level.
121
Y/B
Engine coolant temperature
sensor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.
122
G/R
Radiator coolant tempera-
ture sensor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with radia-
tor coolant temperature.
123
PU
Heated oxygen sensor 2
(bank 1)
[Engine is running]
●
Revving engine from idle up to 3,000 rpm
quickly after the following conditions are met.
–
Warm-up condition
–
Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load
0 - Approximately 1.0V
124
B
Heated oxygen sensor 2
(bank 2)
[Engine is running]
●
Revving engine from idle up to 3,000 rpm
quickly after the following conditions are met.
–
Warm-up condition
–
Keeping the engine speed between 3,500
and 4,000 rpm for 1 minute and at idle for 1
minute under no load
0 - Approximately 1.0V
125
126
W
W
Knock sensor (bank 1)
Knock sensor (bank 2)
[Engine is running]
●
Idle speed
Approximately 2.5V
151
L/B
Throttle control motor
(Open)
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully depressed
0 - 14V
152
P
Intake valve timing control
solenoid valve (bank 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,500 rpm
7 - 12V
153
B
Throttle control motor
ground
[Ignition switch: ON]
Approximately 0V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB0058E
PBIB1790E
TROUBLE DIAGNOSIS
EC-107
C
D
E
F
G
H
I
J
K
L
M
A
EC
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
154
L/W
Throttle control motor
(Close)
[Ignition switch: ON]
●
Engine stopped
●
Selector lever: D
●
Accelerator pedal: Fully released
0 - 14V
155
W/B
Intake valve timing control
solenoid valve (bank 2)
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed: 2,500 rpm
7 - 12V
156
159
165
168
B
B
B/W
B/W
ECM ground
[Engine is running]
●
Idle speed
Engine ground
157
L
Throttle control motor relay
power supply
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
158
L/Y
EVAP canister vent control
valve
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
163
166
R
R
Power supply for ECM
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14V)
164
PU
Data link connector
[Ignition switch: ON]
●
CONSULT-II or GST: Disconnected.
BATTERY VOLTAGE
(11 - 14V)
171
P/B
CAN communication line
[Ignition switch: ON]
Approximately 1.7 - 2.3V
Output voltage varies with the
communication status.
174
LG/B
CAN communication line
[Ignition switch: ON]
Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB0061E
PBIB1790E
EC-108
TROUBLE DIAGNOSIS
CONSULT-II Function (ENGINE)
ABS002DU
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
●
Others
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.
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