Nissan Terrano r20e. Instruction — part 127
Description
The crankshaft position sensor (TDC) monitors engine speed by
means of signals from the sensing plate (with three protrusions)
installed to the crankshaft pulley. The data signal output is detected
at ATDC 70° and sent to the ECM. The sensor signal is used for
fuel injection control and fuel injection timing control.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEM
CONDITION
SPECIFICATION
CKPS
⋅
RPM (TDC)
I
Tachometer: Connect
I
Run engine and compare tachometer indication with the CONSULT-II
value.
Almost the same speed as the
CONSULT-II value.
ECM Terminals and Reference Value
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 damage the
ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and
Pulse Signal)
44
L/G
Crankshaft position sensor
(TDC)
Engine is running.
Warm-up condition
Idle speed
Approximately 0V
SEF333Y
Engine is running.
Warm-up condition
Engine speed is 2,000 rpm
Approximately 0V
SEF334Y
47
L/R
Crankshaft position sensor
(TDC) ground
Engine is running.
Warm-up condition
Idle speed
Approximately 0V
SEF231Z
DTC 0407 CRANK POS SEN (TDC)
ZD30DDTi
EC-145
On Board Diagnosis Logic
Malfunction is detected when ...
Check Items (Possible Cause)
I
An improper signal from the sensor is sent to ECM during
engine running and cranking.
I
Harness or connectors
(The sensor circuit is open.)
I
Crankshaft position sensor (TDC)
DTC Confirmation Procedure
Before performing the following procedure, confirm that bat-
tery voltage is more than 10V.
WITH CONSULT-II
1) Turn ignition switch “ON” and select “DATA MONITOR” mode
with CONSULT-II.
2) Crank engine for at least 1 second.
3) Start engine and run it for at least 2 seconds at idle speed.
4) If DTC is detected, go to “Diagnostic Procedure”, EC-149.
WITHOUT CONSULT-II
1) Crank engine for at least 1 second.
2) Start engine and run it for at least 2 seconds at idle speed.
3) Turn ignition switch “OFF”, wait at least 5 seconds and then turn
“ON”.
4) Perform “Diagnostic Test Mode II (Self-diagnostic results)” with
ECM.
5) If DTC is detected, go to “Diagnostic Procedure”, EC-149.
SEF817Y
DTC 0407 CRANK POS SEN (TDC)
ZD30DDTi
EC-146
Wiring Diagram
LHD MODELS
YEC185A
DTC 0407 CRANK POS SEN (TDC)
ZD30DDTi
EC-147
RHD MODELS
YEC186A
DTC 0407 CRANK POS SEN (TDC)
ZD30DDTi
Wiring Diagram (Cont’d)
EC-148
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