Infiniti EX35. Manual — part 668
EC-414
< COMPONENT DIAGNOSIS >
[VQ35HR]
P1574 ASCD VEHICLE SPEED SENSOR
NO
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
BRC-30, "CONSULT-III Function"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning part.
3.
CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
MWI-40, "CONSULT-III Function (METER/M&A)"
.
>> INSPECTION END
P1574 ICC VEHICLE SPEED SENSOR
EC-415
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1574 ICC VEHICLE SPEED SENSOR
Description
INFOID:0000000003133589
The ECM receives two vehicle speed signals via CAN communication line. One is sent from “unified meter and
A/C amp.”, and the other is from TCM (Transmission control module). The ECM uses these signals for ICC
control. Refer to
for ICC functions.
DTC Logic
INFOID:0000000003133590
DTC DETECTION LOGIC
NOTE:
• If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to
• If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
• If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer
.
• If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine (VDC switch OFF).
2.
Drive the vehicle at more than 40 km/h (25 MPH).
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
3.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003133591
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
TM-36, "Diagnosis Description"
Is the inspection result normal?
YES
>> GO TO 2.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P1574
ICC vehicle speed
sensor
ECM detects a difference between two vehicle
speed signals is out of the specified range.
• Harness or connectors
(The CAN communication line is open or
shorted.)
• Unified meter and A/C amp.
• ABS actuator and electric unit (control unit)
• Wheel sensor
• TCM
• ECM
EC-416
< COMPONENT DIAGNOSIS >
[VQ35HR]
P1574 ICC VEHICLE SPEED SENSOR
NO
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
BRC-30, "CONSULT-III Function"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning part.
3.
CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Check combination meter function.
Refer to
MWI-40, "CONSULT-III Function (METER/M&A)"
.
>> INSPECTION END
P1715 INPUT SPEED SENSOR (TURBINE REVOLUTION SENSOR)
EC-417
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1715 INPUT SPEED SENSOR (TURBINE REVOLUTION SENSOR)
Description
INFOID:0000000003133592
ECM receives turbine revolution sensor signal from TCM through CAN communication line. ECM uses this
signal for engine control.
DTC Logic
INFOID:0000000003133593
DTC DETECTION LOGIC
NOTE:
• If DTC P1715 is displayed with DTC U1000, U1001 first perform the trouble diagnosis for DTC U1000,
U1001. Refer to
• If DTC P1715 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
• If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
.
• If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer
.
• If DTC P1715 is displayed with DTC P0340, first perform the trouble diagnosis for DTC P0340. Refer
.
Diagnosis Procedure
INFOID:0000000003133594
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
TM-36, "Diagnosis Description"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble shooting relevant to DTC indicated.
2.
REPLACE TCM
Replace TCM.
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1715
Input speed sensor
(Turbine revolution sen-
sor)
(TCM output)
Turbine revolution sensor signal is differ-
ent from the theoretical value calculated
by ECM from revolution sensor signal and
engine rpm signal.
• Harness or connectors
(The CAN communication line is open or short-
ed)
• Harness or connectors
(Turbine revolution sensor circuit is open or
shorted)
• TCM
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