Infiniti FX35 / FX45. Manual — part 418
DTC P0850 PNP SWITCH
EC-433
< SERVICE INFORMATION >
[VQ35DE]
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1.
Disconnect TCM harness connector.
2.
Check harness continuity between A/T assembly terminal 9 and TCM terminal 8.
Refer to
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK INTERMITTENT INCIDENT
OK or NG
OK
>> GO TO 8.
NG
>> Repair or replace.
8.
REPLACE “UNIFIED METER AND A/C AMP.”
>> INSPECTION END
Continuity should exist.
EC-434
< SERVICE INFORMATION >
[VQ35DE]
DTC P1148, P1168 CLOSED LOOP CONTROL
DTC P1148, P1168 CLOSED LOOP CONTROL
On Board Diagnosis Logic
INFOID:0000000001326282
These self-diagnoses have the one trip detection logic.
NOTE:
DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.
Perform the trouble diagnosis for the corresponding DTC.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1148
1148
(Bank 1)
Closed loop control
function
The closed loop control function for bank 1 does
not operate even when vehicle is driving in the
specified condition.
• Harness or connectors
[Air fuel ratio (A/F) sensor 1 circuit is open
or shorted.]
• Air fuel ratio (A/F) sensor 1
• Air fuel ratio (A/F) sensor 1 heater
P1168
1168
(Bank 2)
The closed loop control function for bank 2 does
not operate even when vehicle is driving in the
specified condition.
DTC P1211 TCS CONTROL UNIT
EC-435
< SERVICE INFORMATION >
[VQ35DE]
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DTC P1211 TCS CONTROL UNIT
Description
INFOID:0000000001326283
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.
On Board Diagnosis Logic
INFOID:0000000001326284
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 Procedure
INFOID:0000000001326285
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
1.
Start engine and let it idle for at least 60 seconds.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000001326286
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1211
1211
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
EC-436
< SERVICE INFORMATION >
[VQ35DE]
DTC P1212 TCS COMMUNICATION LINE
DTC P1212 TCS COMMUNICATION LINE
Description
INFOID:0000000001326287
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
.
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 Logic
INFOID:0000000001326288
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 Procedure
INFOID:0000000001326289
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
1.
Start engine and let it idle for at least 10 seconds.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000001326290
Go to
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1212
1212
TCS communication line
ECM can not receive the information from
“ABS actuator and electric unit (control
unit)”.
• Harness or connectors
(CAN communication line is open or shorted.)
• ABS actuator and electric unit (control unit)
• Dead (Weak) battery
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