Infiniti QX4 (R50). Manual — part 284
Component Description
NBEC0361
The malfunction information related to A/T (Automatic Transmission) is transferred through the line (circuit)
from TCM (Transmission control module) to ECM. Therefore, be sure to erase the malfunction information such
as DTC not only in TCM (Transmission control module) but also ECM after the A/T related repair.
On Board Diagnosis Logic
NBEC0363
Malfunction is detected when an incorrect signal from TCM (Trans-
mission control module) is sent to ECM.
Possible Cause
NBEC0594
I
Harness or connectors
[The communication line circuit between ECM and TCM
(Transmission control module) is open or shorted.]
I
Dead (Weak) battery
I
TCM (Transmission control module)
SEF058Y
DTC Confirmation Procedure
NBEC0364
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10.5V at idle.
WITH CONSULT-II
NBEC0364S01
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and wait at least 40 seconds.
4)
If 1st trip DTC is detected, go to “DTC P0600 A/T COMMUNI-
CATION LINE Diagnostic Procedure”, EC-443.
WITH GST
NBEC0364S02
Follow the procedure “WITH CONSULT-II” above.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1605 A/T DIAGNOSIS COMMUNICATION LINE
Component Description
EC-603
AEC877A
Component Description
NBEC0367
When the gear position is “P” (A/T models only) or “N”, park/neutral
position (PNP) switch is “ON”.
ECM detects the position because the continuity of the line (the
“ON” signal) exists.
For A/T models, the park/neutral position (PNP) switch assembly
also includes a transmission range switch to detect selector lever
position.
CONSULT-II Reference Value in Data Monitor
Mode
NBEC0368
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
P/N POSI SW
I
Ignition switch: ON
Shift lever: “P” or “N”
ON
Except above
OFF
ECM Terminals and Reference Value
NBEC0683
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
44
L
PNP switch
[Ignition switch “ON”]
I
Gear position is “P” or “N” (A/T models).
Approximately 0V
[Ignition switch “ON”]
I
Except the above gear position
BATTERY VOLTAGE
(11 - 14V)
On Board Diagnosis Logic
NBEC0370
Malfunction is detected when the signal of the park/neutral position
(PNP) switch is not changed in the process of engine starting and
driving.
Possible Cause
NBEC0595
I
Harness or connectors
[The park/neutral position (PNP) switch circuit is open or
shorted.]
I
Park/neutral position (PNP) switch
DTC P1706 PARK/NEUTRAL POSITION (PNP) SWITCH
Component Description
EC-604
DTC Confirmation Procedure
NBEC0371
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
SEF212Y
SEF213Y
WITH CONSULT-II
NBEC0371S01
1)
Turn ignition switch “ON”.
2)
Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the fol-
lowing conditions.
Position (Selector lever)
Known-good signal
“N” and “P” position
ON
Except the above position
OFF
If NG, go to “Diagnostic Procedure”, EC-608.
If OK, go to following step.
3)
Select “DATA MONITOR” mode with CONSULT-II.
4)
Start engine and warm it up to normal operating temperature.
5)
Maintain the following conditions for at least 60 consecutive
seconds.
ENG SPEED
1,500 - 2,500 rpm
COOLAN TEMP/S
More than 70°C (158°F)
B/FUEL SCHDL
3.6 - 12 msec
VHCL SPEED SE
70 - 100 km/h (43 - 62 MPH)
Selector lever
Suitable position
6)
If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-608.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1706 PARK/NEUTRAL POSITION (PNP) SWITCH
DTC Confirmation Procedure
EC-605
SEF359X
Overall Function Check
=NBEC0372
Use this procedure to check the overall function of the park/neutral
position (PNP) switch circuit. During this check, a 1st trip DTC
might not be confirmed.
WITH GST
NBEC0372S01
1)
Turn ignition switch “ON”.
2)
Check voltage between ECM terminal 44 and body ground
under the following conditions.
Condition (Gear position)
Voltage V (Known good data)
“P” and “N” position
Approx. 0
Except the above position
Battery voltage
3)
If NG, go to “Diagnostic Procedure”, EC-608.
DTC P1706 PARK/NEUTRAL POSITION (PNP) SWITCH
Overall Function Check
EC-606
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст