2006 INFINITI M35 display

DTC P1148, P1168 CLOSED LOOP CONTROL
EC-509
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1148, P1168 CLOSED LOOP CONTROLPFP:22690
On Board Diagnosis LogicNBS0052T
These self-diagnoses have the one trip detection logic.
DTC P1148 or P1168 is displayed with another DTC for A/F sensor 1.
Perform the trouble diagnosis for the corresponding DTC.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148
11 4 8
(Bank 1)
Closed loop control
functionThe closed loop control function for bank 1
does not operate even when vehicle is driving
in the specified condition.
Harness or connectors
(The A/F sensor 1 circuit is open or
shorted.)
A/F sensor 1
A/F sensor 1 heater P1168
11 6 8
(Bank 2)The closed loop control function for bank 2
does not operate even when vehicle is driving
in the specified condition.

DTC P1212 TCS COMMUNICATION LINE
EC-511
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionNBS0052Y
NOTE:
If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-173, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC P1212 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-176, "
DTC U1010 CAN COMMUNICATION" .
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”.
Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit
(control unit)” but also for ECM after TCS related repair.
On Board Diagnosis LogicNBS0052Z
Freeze frame data is not stored in the ECM for this self-diagnosis.
The MIL will not light up for this self-diagnosis.
DTC Confirmation ProcedureNBS00530
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 10 seconds.
4. If a 1st trip DTC is detected, go to EC-511, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureNBS00531
Go to BRC-11, "TROUBLE DIAGNOSIS" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212
1212TCS communication
lineECM can not receive the information
from “ABS actuator and electric unit (con-
trol unit)” continuously.
Harness or connectors
(The CAN communication line is open or
shorted.)
ABS actuator and electric unit (control unit)
Dead (Weak) battery
SEF058Y

EC-512
[VQ35DE]
DTC P1217 ENGINE OVER TEMPERATURE
Revision: 2006 January2006 M35/M45
DTC P1217 ENGINE OVER TEMPERATUREPFP:00000
DescriptionNBS00532
SYSTEM DESCRIPTION
NOTE:
If DTC P1217 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-173, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC P1217 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-176, "
DTC U1010 CAN COMMUNICATION" .
Cooling Fan Control
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, air conditioner
ON signal, refrigerant pressure, target A/C evaporator temperature and A/C evaporator temperature.
Cooling fan control signal is sent to IPDM E/R from ECM by CAN communication line. Then, IPDM E/R sends
ON/OFF pulse duty signal to cooling fan control module. Corresponding to this ON/OFF pulse duty signal,
cooling fan control module gives cooling fan motor operating voltage to cooling fan motors. Cooling fan speed
is controlled by duty cycle of cooling fan motor operating voltage sent from cooling fan control module.
COMPONENT DESCRIPTION
Cooling Fan Control Module
Cooling fan control module (1) receives ON/OFF pulse duty signal
from IPDM E/R. Corresponding to this ON/OFF pulse duty signal,
cooling fan control module sends cooling fan motor operating volt-
age to cooling fan motor. The revolution speed of cooling fan motor
is controlled by duty cycle of the voltage.
: Vehicle front
Cooling fan motor-1 harness connector (2)
Cooling fan motor-2 harness connector (3)
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
1
Cooling fan
control
IPDM E/R
Cooling fan relay
Cooling fan control
module Battery
Battery voltage*
1
Wheel sensor
Vehicle speed*2
Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch
Air conditioner ON signal*
2
Refrigerant pressure sensor Refrigerant pressure
Unified meter and A/C amp.
Target A/C evaporator temperature*
2
Intake sensor
A/C evaporator temperature*2
PBIB2691E

DTC P1550 BATTERY CURRENT SENSOR
EC-537
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1550 BATTERY CURRENT SENSORPFP:294G0
Component DescriptionNBS0053R
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator. The battery cur-
rent sensor (1) is installed to the battery cable at the negative termi-
nal. The sensor measures the charging/discharging current of the
battery. Based on the sensor signal, ECM judges whether or not the
power generation voltage variable control is performed. When per-
forming the power generation voltage variable control, ECM calcu-
lates the target power generation voltage based on the sensor
signal. And ECM sends the calculated value as the power genera-
tion command value to IPDM E/R. For the details of the power gen-
eration voltage variable control, refer to SC section.
CAUTION:
Do not connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
CONSULT-II Reference Value in Data Monitor ModeNBS0053S
Specification data are reference values.
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to SC-5, "SPECIFIC GRAVITY CHECK" .
On Board Diagnosis LogicNBS0053T
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1550 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-499, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB2685E
MONITOR ITEM CONDITION SPECIFICATION
BAT CUR SEN
Engine speed: Idle
Battery: Fully charged*
Selector lever: P or N
Air conditioner switch: OFF
No loadApprox. 2,600 - 3,500mV
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1550
1550Battery current sensor circuit
range/performanceThe output voltage of the battery current
sensor remains within the specified
range while engine is running.
Harness or connectors
(The sensor circuit is open or shorted.)
Battery current sensor

DTC P1551, P1552 BATTERY CURRENT SENSOR
EC-543
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1551, P1552 BATTERY CURRENT SENSORPFP:294G0
Component DescriptionNBS0053Y
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator. The battery cur-
rent sensor (1) is installed to the battery cable at the negative termi-
nal. The sensor measures the charging/discharging current of the
battery. Based on the sensor signal, ECM judges whether or not the
power generation voltage variable control is performed. When per-
forming the power generation voltage variable control, ECM calcu-
lates the target power generation voltage based on the sensor
signal. And ECM sends the calculated value as the power genera-
tion command value to IPDM E/R. For the details of the power gen-
eration voltage variable control, refer to SC section.
CAUTION:
Do not connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
CONSULT-II Reference Value in Data Monitor ModeNBS0053Z
Specification data are reference values.
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to SC-5, "SPECIFIC GRAVITY CHECK" .
On Board Diagnosis LogicNBS00540
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1551 or P1552 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-499, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB2685E
MONITOR ITEM CONDITION SPECIFICATION
BAT CUR SEN
Engine speed: Idle
Battery: Fully charged*
Selector lever: P or N
Air conditioner switch: OFF
No loadApprox. 2,600 - 3,500mV
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1551
1551Battery current sensor circuit
low inputAn excessively low voltage from the sen-
sor is sent to ECM.
Harness or connectors
(The sensor circuit is open or shorted.)
Battery current sensor P1552
1552Battery current sensor circuit
high inputAn excessively high voltage from the
sensor is sent to ECM.

DTC P1553 BATTERY CURRENT SENSOR
EC-549
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Revision: 2006 January2006 M35/M45
DTC P1553 BATTERY CURRENT SENSORPFP:294G0
Component DescriptionNBS00545
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator. The battery cur-
rent sensor (1) is installed to the battery cable at the negative termi-
nal. The sensor measures the charging/discharging current of the
battery. Based on the sensor signal, ECM judges whether or not the
power generation voltage variable control is performed. When per-
forming the power generation voltage variable control, ECM calcu-
lates the target power generation voltage based on the sensor
signal. And ECM sends the calculated value as the power genera-
tion command value to IPDM E/R. For the details of the power gen-
eration voltage variable control, refer to SC section.
CAUTION:
Do not connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
CONSULT-II Reference Value in Data Monitor ModeNBS00546
Specification data are reference values.
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to SC-5, "SPECIFIC GRAVITY CHECK" .
On Board Diagnosis LogicNBS00547
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1553 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-499, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB2685E
MONITOR ITEM CONDITION SPECIFICATION
BAT CUR SEN
Engine speed: Idle
Battery: Fully charged*
Selector lever: P or N
Air conditioner switch: OFF
No loadApprox. 2,600 - 3,500mV
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1553
1553Battery current sensor perfor-
manceThe signal voltage transmitted from the
sensor to ECM is higher than the amount
of the maximum power generation.
Harness or connectors
(The sensor circuit is open or shorted.)
Battery current sensor

DTC P1554 BATTERY CURRENT SENSOR
EC-555
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1554 BATTERY CURRENT SENSORPFP:294G0
Component DescriptionNBS0054C
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator. The battery cur-
rent sensor (1) is installed to the battery cable at the negative termi-
nal. The sensor measures the charging/discharging current of the
battery. Based on the sensor signal, ECM judges whether or not the
power generation voltage variable control is performed. When per-
forming the power generation voltage variable control, ECM calcu-
lates the target power generation voltage based on the sensor
signal. And ECM sends the calculated value as the power genera-
tion command value to IPDM E/R. For the details of the power gen-
eration voltage variable control, refer to SC section.
CAUTION:
Do not connect the electrical component or the ground wire directly to the battery terminal. The con-
nection causes the malfunction of the power generation voltage variable control, and then the battery
discharge may occur.
CONSULT-II Reference Value in Data Monitor ModeNBS0054D
Specification data are reference values.
*: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to SC-5, "SPECIFIC GRAVITY CHECK" .
On Board Diagnosis LogicNBS0054E
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1554 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
EC-499, "
DTC P0643 SENSOR POWER SUPPLY" .
PBIB2685E
MONITOR ITEM CONDITION SPECIFICATION
BAT CUR SEN
Engine speed: Idle
Battery: Fully charged*
Selector lever: P or N
Air conditioner switch: OFF
No loadApprox. 2,600 - 3,500mV
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1554
1554Battery current sensor perfor-
manceThe output voltage of the battery current
sensor is lower than the specified value
while the battery voltage is high enough.
Harness or connectors
(The sensor circuit is open or shorted.)
Battery current sensor

DTC P1564 ICC STEERING SWITCH
EC-561
[VQ35DE]
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Revision: 2006 January2006 M35/M45
DTC P1564 ICC STEERING SWITCHPFP:25551
Component DescriptionNBS0054J
ICC steering switch has variant values of electrical resistance for each button. ECM reads voltage variation of
switch, and determines which button is operated.
Refer to ACS-6, "
DESCRIPTION" for the ICC function.
CONSULT-II Reference Value in Data Monitor ModeNBS0054K
Specification data are reference values.
On Board Diagnosis LogicNBS0054L
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to
EC-496, "
DTC P0605 ECM" .
1. ASCD steering switch 2. RESUME/ACCELERATE switch 3. SET/COAST switch
4. CANCEL switch 5. DISTANCE switch 6. MAIN switch
PBIB2709E
MONITOR ITEM CONDITION SPECIFICATION
MAIN SW
Ignition switch: ONMAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW
Ignition switch: ONCANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW
Ignition switch: ONRESUME/ACCELERATE switch:
PressedON
RESUME/ACCELERATE switch:
ReleasedOFF
SET SW
Ignition switch: ONSET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
DIST SW
Ignition switch: ONDISTANCE switch: Pressed ON
DISTANCE switch: Released OFF
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1564
1564ICC steering switch
An excessively high voltage signal from the
ICC steering switch is sent to ECM.
ECM detects that input signal from the ICC
steering switch is out of the specified range.
ECM detects that the ICC steering switch is
stuck ON.
Harness or connectors
(The switch circuit is open or shorted.)
ICC steering switch
ECM