Infiniti G35 (V35) Sedan. Manual — part 551
EC-350
< COMPONENT DIAGNOSIS >
[VQ35HR]
P1078, P1084 EVT CONTROL POSITION SENSOR
Component Inspection
INFOID:0000000000956733
1.
EXHAUST VALVE TIMING CONTROL POSITION SENSOR-I
1.
Turn ignition switch OFF.
2.
Disconnect exhaust valve timing control position sensor harness connector.
3.
Loosen the fixing bolt of the sensor.
4.
Remove the sensor.
5.
Visually check the sensor for chipping.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace malfunctioning exhaust valve timing control
position sensor.
2.
EXHAUST VALVE TIMING CONTROL POSITION SENSOR-II
Check resistance exhaust valve timing control position sensor terminals as shown below.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning exhaust valve timing control position sensor.
JMBIA0065ZZ
Terminals
Resistance
1 (+) - 2 (-)
Except 0 or
∞
Ω
[at 25
°
C (77
°
F)]
1 (+) - 3 (-)
2 (+) - 3 (-)
P1148, P1168 CLOSED LOOP CONTROL
EC-351
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1148, P1168 CLOSED LOOP CONTROL
DTC Logic
INFOID:0000000000956734
DTC DETECTION LOGIC
NOTE:
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
Closed loop control
function (bank 1)
The 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 short-
ed.)
• A/F sensor 1
• A/F sensor 1 heater
P1168
Closed loop control
function (bank 2)
The closed loop control function for bank 2 does
not operate even when vehicle is driving in the
specified condition.
EC-352
< COMPONENT DIAGNOSIS >
[VQ35HR]
P1211 TCS CONTROL UNIT
P1211 TCS CONTROL UNIT
Description
INFOID:0000000000956735
The malfunction information related to TCS is transferred through the CAN communication line from “ABS
actuator and electric unit (control unit)” to ECM.
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.
DTC Logic
INFOID:0000000000956736
DTC DETECTION LOGIC
Freeze frame data is not stored in the ECM for this self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for at least 60 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>>
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000000956737
Go to
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1211
TCS control unit
ECM receives a malfunction information from
“ABS actuator and electric unit (control unit)”.
• ABS actuator and electric unit (control
unit)
• TCS related parts
P1212 TCS COMMUNICATION LINE
EC-353
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1212 TCS COMMUNICATION LINE
Description
INFOID:0000000000956738
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.
DTC Logic
INFOID:0000000000956739
DTC DETECTION LOGIC
NOTE:
• If DTC P1212 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to
• If DTC P1212 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
.
Freeze frame data is not stored in the ECM for this self-diagnosis.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for at least 10 seconds.
2.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000000956740
Go to
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1212
TCS communication line
ECM can not receive the information from
“ABS actuator and electric unit (control
unit)” continuously.
• Harness or connectors
(The CAN communication line is open or short-
ed.)
• ABS actuator and electric unit (control unit)
• Dead (Weak) battery
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